Merge remote-tracking branch 'origin/hdf5_1_12_1' into 1.12/master forhdf5-1_12_1

HDF5 1.12.1 release.

121 files changed, 865 insertions, 715 deletions

diff --git a/c++/COPYING b/c++/COPYING
deleted file mode 100644
index 6497ace..0000000
--- a/c++/COPYING
+++ /dev/null
@@ -1,13 +0,0 @@
-
-  Copyright by  The HDF Group and 
-                The Board of Trustees of the University of Illinois. 
-  All rights reserved. 
-
-  The files and subdirectories in this directory are part of HDF5.  
-  The full HDF5 copyright notice, including terms governing use, 
-  modification, and redistribution, is contained in the COPYING file
-  which can be found at the root of the source code distribution tree
-  or in https://support.hdfgroup.org/ftp/HDF5/releases.  If you do
-  not have access to either file, you may request a copy from 
-  help@hdfgroup.org. 
-
diff --git a/c++/Makefile.am b/c++/Makefile.am
index 319ce6e..5d8258b 100644
--- a/c++/Makefile.am
+++ b/c++/Makefile.am
@@ -6,7 +6,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 ##
@@ -14,7 +14,7 @@
 ## Run automake to generate a Makefile.in from this file.
 #
 # Top-level HDF5-C++ Makefile(.in)
-# 
+#
 
 include $(top_srcdir)/config/commence.am
 
diff --git a/c++/Makefile.in b/c++/Makefile.in
index aa4076d..1145613 100644
--- a/c++/Makefile.in
+++ b/c++/Makefile.in
@@ -22,12 +22,12 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
 # Top-level HDF5-C++ Makefile(.in)
-# 
+#
 VPATH = @srcdir@
 am__is_gnu_make = { \
   if test -z '$(MAKELEVEL)'; then \
@@ -113,6 +113,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/aclocal_cxx.m4 \
 	$(top_srcdir)/m4/ax_check_junit.m4 \
 	$(top_srcdir)/m4/ax_java_options.m4 \
 	$(top_srcdir)/m4/ax_jni_include_dir.m4 \
+	$(top_srcdir)/m4/ax_prog_doxygen.m4 \
 	$(top_srcdir)/m4/ax_prog_jar.m4 \
 	$(top_srcdir)/m4/ax_prog_java.m4 \
 	$(top_srcdir)/m4/ax_prog_java_works.m4 \
@@ -386,7 +387,7 @@ am__set_b = \
   esac
 am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/bin/test-driver \
 	$(top_srcdir)/config/commence.am \
-	$(top_srcdir)/config/conclude.am COPYING
+	$(top_srcdir)/config/conclude.am
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 am__relativize = \
   dir0=`pwd`; \
@@ -419,7 +420,7 @@ AMTAR = @AMTAR@
 
 # H5_CFLAGS holds flags that should be used when building hdf5,
 # but which should not be exported to h5cc for building other programs.
-# AM_CFLAGS is an automake construct which should be used by Makefiles 
+# AM_CFLAGS is an automake construct which should be used by Makefiles
 # instead of CFLAGS, as CFLAGS is reserved solely for the user to define.
 # This applies to FCFLAGS, CXXFLAGS, CPPFLAGS, and LDFLAGS as well.
 AM_CFLAGS = @AM_CFLAGS@ @H5_CFLAGS@
@@ -444,6 +445,7 @@ CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CC_VERSION = @CC_VERSION@
 CFLAGS = @CFLAGS@
+CLANG_SANITIZE_CHECKS = @CLANG_SANITIZE_CHECKS@
 CODESTACK = @CODESTACK@
 CONFIG_DATE = @CONFIG_DATE@
 CONFIG_MODE = @CONFIG_MODE@
@@ -460,11 +462,54 @@ DEFAULT_API_VERSION = @DEFAULT_API_VERSION@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DEPRECATED_SYMBOLS = @DEPRECATED_SYMBOLS@
-DEV_WARNINGS = @DEV_WARNINGS@
+DESIRED_FILE_LOCKING = @DESIRED_FILE_LOCKING@
+DIAGS = @DIAGS@
 DIRECT_VFD = @DIRECT_VFD@
 DLLTOOL = @DLLTOOL@
+DOXYGEN_EXAMPLES_DIRECTORY = @DOXYGEN_EXAMPLES_DIRECTORY@
+DOXYGEN_EXTERNAL_SEARCH = @DOXYGEN_EXTERNAL_SEARCH@
+DOXYGEN_HTML_EXTRA_FILES = @DOXYGEN_HTML_EXTRA_FILES@
+DOXYGEN_HTML_EXTRA_STYLESHEET = @DOXYGEN_HTML_EXTRA_STYLESHEET@
+DOXYGEN_HTML_FOOTER = @DOXYGEN_HTML_FOOTER@
+DOXYGEN_HTML_HEADER = @DOXYGEN_HTML_HEADER@
+DOXYGEN_INCLUDE_ALIASES = @DOXYGEN_INCLUDE_ALIASES@
+DOXYGEN_INPUT_DIRECTORY = @DOXYGEN_INPUT_DIRECTORY@
+DOXYGEN_LAYOUT_FILE = @DOXYGEN_LAYOUT_FILE@
+DOXYGEN_MACRO_EXPANSION = @DOXYGEN_MACRO_EXPANSION@
+DOXYGEN_OPTIMIZE_OUTPUT_FOR_C = @DOXYGEN_OPTIMIZE_OUTPUT_FOR_C@
+DOXYGEN_OUTPUT_DIRECTORY = @DOXYGEN_OUTPUT_DIRECTORY@
+DOXYGEN_PACKAGE = @DOXYGEN_PACKAGE@
+DOXYGEN_PAPER_SIZE = @DOXYGEN_PAPER_SIZE@
+DOXYGEN_PROJECT_BRIEF = @DOXYGEN_PROJECT_BRIEF@
+DOXYGEN_PROJECT_LOGO = @DOXYGEN_PROJECT_LOGO@
+DOXYGEN_SEARCHENGINE_URL = @DOXYGEN_SEARCHENGINE_URL@
+DOXYGEN_SERVER_BASED_SEARCH = @DOXYGEN_SERVER_BASED_SEARCH@
+DOXYGEN_VERSION_STRING = @DOXYGEN_VERSION_STRING@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+DX_CONFIG = @DX_CONFIG@
+DX_DOCDIR = @DX_DOCDIR@
+DX_DOT = @DX_DOT@
+DX_DOXYGEN = @DX_DOXYGEN@
+DX_DVIPS = @DX_DVIPS@
+DX_EGREP = @DX_EGREP@
+DX_ENV = @DX_ENV@
+DX_FLAG_chi = @DX_FLAG_chi@
+DX_FLAG_chm = @DX_FLAG_chm@
+DX_FLAG_doc = @DX_FLAG_doc@
+DX_FLAG_dot = @DX_FLAG_dot@
+DX_FLAG_html = @DX_FLAG_html@
+DX_FLAG_man = @DX_FLAG_man@
+DX_FLAG_pdf = @DX_FLAG_pdf@
+DX_FLAG_ps = @DX_FLAG_ps@
+DX_FLAG_rtf = @DX_FLAG_rtf@
+DX_FLAG_xml = @DX_FLAG_xml@
+DX_HHC = @DX_HHC@
+DX_LATEX = @DX_LATEX@
+DX_MAKEINDEX = @DX_MAKEINDEX@
+DX_PDFLATEX = @DX_PDFLATEX@
+DX_PERL = @DX_PERL@
+DX_PROJECT = @DX_PROJECT@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
@@ -498,6 +543,7 @@ H5_CPPFLAGS = @H5_CPPFLAGS@
 H5_CXXFLAGS = @H5_CXXFLAGS@
 H5_FCFLAGS = @H5_FCFLAGS@
 H5_FORTRAN_SHARED = @H5_FORTRAN_SHARED@
+H5_IS_DARWIN = @H5_IS_DARWIN@
 H5_JAVACFLAGS = @H5_JAVACFLAGS@
 H5_JAVAFLAGS = @H5_JAVAFLAGS@
 H5_JNIFLAGS = @H5_JNIFLAGS@
@@ -508,6 +554,7 @@ HAVE_DMALLOC = @HAVE_DMALLOC@
 HAVE_Fortran_INTEGER_SIZEOF_16 = @HAVE_Fortran_INTEGER_SIZEOF_16@
 HAVE_LIBHDFS = @HAVE_LIBHDFS@
 HAVE_PTHREAD = @HAVE_PTHREAD@
+HDF5_DOXYGEN = @HDF5_DOXYGEN@
 HDF5_HL = @HDF5_HL@
 HDF5_INTERFACES = @HDF5_INTERFACES@
 HDF5_TESTS = @HDF5_TESTS@
@@ -520,6 +567,7 @@ HL = @HL@
 HL_FOR = @HL_FOR@
 HSIZE_T = @HSIZE_T@
 HSSIZE_T = @HSSIZE_T@
+IGNORE_DISABLED_FILE_LOCKS = @IGNORE_DISABLED_FILE_LOCKS@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -557,6 +605,7 @@ MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
 MAP_API = @MAP_API@
 MEMORYALLOCSANITYCHECK = @MEMORYALLOCSANITYCHECK@
+MIRROR_VFD = @MIRROR_VFD@
 MKDIR_P = @MKDIR_P@
 MPE = @MPE@
 NM = @NM@
@@ -593,6 +642,7 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PREADWRITE = @PREADWRITE@
 PROFILING = @PROFILING@
 RANLIB = @RANLIB@
+RECURSIVE_RW_LOCKS = @RECURSIVE_RW_LOCKS@
 ROOT = @ROOT@
 ROS3_VFD = @ROS3_VFD@
 RUNPARALLEL = @RUNPARALLEL@
@@ -616,6 +666,7 @@ TIME = @TIME@
 TR = @TR@
 TRACE_API = @TRACE_API@
 UNAME_INFO = @UNAME_INFO@
+USE_FILE_LOCKING = @USE_FILE_LOCKING@
 USE_FILTER_DEFLATE = @USE_FILTER_DEFLATE@
 USE_FILTER_SZIP = @USE_FILTER_SZIP@
 USINGMEMCHECKER = @USINGMEMCHECKER@
@@ -708,15 +759,15 @@ LIBH5_HL = $(top_builddir)/hl/src/libhdf5_hl.la
 LIBH5F_HL = $(top_builddir)/hl/fortran/src/libhdf5hl_fortran.la
 LIBH5CPP_HL = $(top_builddir)/hl/c++/src/libhdf5_hl_cpp.la
 
-# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below  
-# has been removed. According to the official description of DESTDIR by Gnu at 
-# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is 
-# prepended to the normal and complete install path that it precedes for the 
-# purpose of installing in a temporary directory which is useful for building 
-# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another 
-# '/' at the beginning of the normal install path.  When DESTDIR is empty the  
-# path then begins with '//', which is incorrect and causes problems at least for 
-# Cygwin.   
+# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below
+# has been removed. According to the official description of DESTDIR by Gnu at
+# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is
+# prepended to the normal and complete install path that it precedes for the
+# purpose of installing in a temporary directory which is useful for building
+# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another
+# '/' at the beginning of the normal install path.  When DESTDIR is empty the
+# path then begins with '//', which is incorrect and causes problems at least for
+# Cygwin.
 
 # Scripts used to build examples
 # If only shared libraries have been installed, have h5cc build examples with
@@ -758,7 +809,7 @@ LIB = $(lib_LIBRARIES) $(lib_LTLIBRARIES) $(noinst_LIBRARIES)                 \
 PROGS = $(bin_PROGRAMS) $(bin_SCRIPTS) $(noinst_PROGRAMS) $(noinst_SCRIPTS)   \
         $(EXTRA_PROG)
 
-chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST) 
+chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST)
 TEST_EXTENSIONS = .sh
 SH_LOG_COMPILER = $(SHELL)
 AM_SH_LOG_FLAGS = 
@@ -1237,9 +1288,9 @@ uninstall-am:
 # commands that should be executed even if a file with the same name already
 # exists.
 .PHONY: build-check-clean build-check-p build-check-s build-lib build-progs \
-        build-tests check-clean check-install check-p check-s check-vfd \
-        check-passthrough-vol install-doc lib progs tests uninstall-doc \
-        _exec_check-s _test help
+	build-tests check-clean check-install check-p check-s check-vfd \
+	check-passthrough-vol install-doc lib progs tests uninstall-doc \
+	_exec_check-s _test help trace doxygen
 
 help:
 	@$(top_srcdir)/bin/makehelp
diff --git a/c++/examples/CMakeLists.txt b/c++/examples/CMakeLists.txt
index 890d22d..c50315f 100644
--- a/c++/examples/CMakeLists.txt
+++ b/c++/examples/CMakeLists.txt
@@ -34,38 +34,52 @@ set (tutr_examples
 
 foreach (example ${examples})
   add_executable (cpp_ex_${example} ${HDF5_CPP_EXAMPLES_SOURCE_DIR}/${example}.cpp)
-  target_include_directories (cpp_ex_${example} PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+  target_include_directories (cpp_ex_${example} PRIVATE "${HDF5_SRC_DIR};${HDF5_SRC_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
   if (NOT BUILD_SHARED_LIBS)
     TARGET_C_PROPERTIES (cpp_ex_${example} STATIC)
     target_link_libraries (cpp_ex_${example} PRIVATE ${HDF5_CPP_LIB_TARGET} ${HDF5_LIB_TARGET})
   else ()
     TARGET_C_PROPERTIES (cpp_ex_${example} SHARED)
     target_link_libraries (cpp_ex_${example} PRIVATE ${HDF5_CPP_LIBSH_TARGET} ${HDF5_LIBSH_TARGET})
-    if (MINGW)
+    if (MINGW AND HDF5_MINGW_STATIC_GCC_LIBS)
       target_link_options (${HDF5_CPP_LIBSH_TARGET}
           PRIVATE -static-libgcc -static-libstdc++
       )
     endif ()
   endif ()
   set_target_properties (cpp_ex_${example} PROPERTIES FOLDER examples/cpp)
+
+  #-----------------------------------------------------------------------------
+  # Add Target to clang-format
+  #-----------------------------------------------------------------------------
+  if (HDF5_ENABLE_FORMATTERS)
+    clang_format (HDF5_CPP_EXAMPLES_${example}_FORMAT cpp_ex_${example})
+  endif ()
 endforeach ()
 
 foreach (example ${tutr_examples})
   add_executable (cpp_ex_${example} ${HDF5_CPP_EXAMPLES_SOURCE_DIR}/${example}.cpp)
-  target_include_directories (cpp_ex_${example} PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+  target_include_directories (cpp_ex_${example} PRIVATE "${HDF5_SRC_DIR};${HDF5_SRC_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
   if (NOT BUILD_SHARED_LIBS)
     TARGET_C_PROPERTIES (cpp_ex_${example} STATIC)
     target_link_libraries (cpp_ex_${example} PRIVATE ${HDF5_CPP_LIB_TARGET} ${HDF5_LIB_TARGET})
   else ()
     TARGET_C_PROPERTIES (cpp_ex_${example} SHARED)
     target_link_libraries (cpp_ex_${example} PRIVATE ${HDF5_CPP_LIBSH_TARGET} ${HDF5_LIBSH_TARGET})
-    if (MINGW)
+    if (MINGW AND HDF5_MINGW_STATIC_GCC_LIBS)
       target_link_options (${HDF5_CPP_LIBSH_TARGET}
           PRIVATE -static-libgcc -static-libstdc++
       )
     endif ()
   endif ()
   set_target_properties (cpp_ex_${example} PROPERTIES FOLDER examples/cpp)
+
+  #-----------------------------------------------------------------------------
+  # Add Target to clang-format
+  #-----------------------------------------------------------------------------
+  if (HDF5_ENABLE_FORMATTERS)
+    clang_format (HDF5_CPP_EXAMPLES_${example}_FORMAT cpp_ex_${example})
+  endif ()
 endforeach ()
 
 if (BUILD_TESTING AND HDF5_TEST_CPP AND HDF5_TEST_EXAMPLES AND HDF5_TEST_SERIAL)
diff --git a/c++/examples/CMakeTests.cmake b/c++/examples/CMakeTests.cmake
index bbe3433..a7fc9b8 100644
--- a/c++/examples/CMakeTests.cmake
+++ b/c++/examples/CMakeTests.cmake
@@ -5,7 +5,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
diff --git a/c++/examples/Makefile.am b/c++/examples/Makefile.am
index 0648504..a316e1b 100644
--- a/c++/examples/Makefile.am
+++ b/c++/examples/Makefile.am
@@ -6,7 +6,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 ##
@@ -49,8 +49,8 @@ CXX_API=yes
 
 # Where to install examples
 # Note: no '/' after DESTDIR.  Explanation in commence.am
-EXAMPLEDIR=$(examplesdir)/c++
-EXAMPLETOPDIR=$(examplesdir)
+EXAMPLEDIR=${DESTDIR}$(examplesdir)/c++
+EXAMPLETOPDIR=${DESTDIR}$(examplesdir)
 
 # How to build programs using h5c++
 $(EXTRA_PROG): $(H5CPP)
diff --git a/c++/examples/Makefile.in b/c++/examples/Makefile.in
index a9ca371..58af9ea 100644
--- a/c++/examples/Makefile.in
+++ b/c++/examples/Makefile.in
@@ -22,7 +22,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -117,6 +117,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/aclocal_cxx.m4 \
 	$(top_srcdir)/m4/ax_check_junit.m4 \
 	$(top_srcdir)/m4/ax_java_options.m4 \
 	$(top_srcdir)/m4/ax_jni_include_dir.m4 \
+	$(top_srcdir)/m4/ax_prog_doxygen.m4 \
 	$(top_srcdir)/m4/ax_prog_jar.m4 \
 	$(top_srcdir)/m4/ax_prog_java.m4 \
 	$(top_srcdir)/m4/ax_prog_java_works.m4 \
@@ -367,7 +368,7 @@ AMTAR = @AMTAR@
 
 # H5_CFLAGS holds flags that should be used when building hdf5,
 # but which should not be exported to h5cc for building other programs.
-# AM_CFLAGS is an automake construct which should be used by Makefiles 
+# AM_CFLAGS is an automake construct which should be used by Makefiles
 # instead of CFLAGS, as CFLAGS is reserved solely for the user to define.
 # This applies to FCFLAGS, CXXFLAGS, CPPFLAGS, and LDFLAGS as well.
 AM_CFLAGS = @AM_CFLAGS@ @H5_CFLAGS@
@@ -392,6 +393,7 @@ CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CC_VERSION = @CC_VERSION@
 CFLAGS = @CFLAGS@
+CLANG_SANITIZE_CHECKS = @CLANG_SANITIZE_CHECKS@
 CODESTACK = @CODESTACK@
 CONFIG_DATE = @CONFIG_DATE@
 CONFIG_MODE = @CONFIG_MODE@
@@ -408,11 +410,54 @@ DEFAULT_API_VERSION = @DEFAULT_API_VERSION@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DEPRECATED_SYMBOLS = @DEPRECATED_SYMBOLS@
-DEV_WARNINGS = @DEV_WARNINGS@
+DESIRED_FILE_LOCKING = @DESIRED_FILE_LOCKING@
+DIAGS = @DIAGS@
 DIRECT_VFD = @DIRECT_VFD@
 DLLTOOL = @DLLTOOL@
+DOXYGEN_EXAMPLES_DIRECTORY = @DOXYGEN_EXAMPLES_DIRECTORY@
+DOXYGEN_EXTERNAL_SEARCH = @DOXYGEN_EXTERNAL_SEARCH@
+DOXYGEN_HTML_EXTRA_FILES = @DOXYGEN_HTML_EXTRA_FILES@
+DOXYGEN_HTML_EXTRA_STYLESHEET = @DOXYGEN_HTML_EXTRA_STYLESHEET@
+DOXYGEN_HTML_FOOTER = @DOXYGEN_HTML_FOOTER@
+DOXYGEN_HTML_HEADER = @DOXYGEN_HTML_HEADER@
+DOXYGEN_INCLUDE_ALIASES = @DOXYGEN_INCLUDE_ALIASES@
+DOXYGEN_INPUT_DIRECTORY = @DOXYGEN_INPUT_DIRECTORY@
+DOXYGEN_LAYOUT_FILE = @DOXYGEN_LAYOUT_FILE@
+DOXYGEN_MACRO_EXPANSION = @DOXYGEN_MACRO_EXPANSION@
+DOXYGEN_OPTIMIZE_OUTPUT_FOR_C = @DOXYGEN_OPTIMIZE_OUTPUT_FOR_C@
+DOXYGEN_OUTPUT_DIRECTORY = @DOXYGEN_OUTPUT_DIRECTORY@
+DOXYGEN_PACKAGE = @DOXYGEN_PACKAGE@
+DOXYGEN_PAPER_SIZE = @DOXYGEN_PAPER_SIZE@
+DOXYGEN_PROJECT_BRIEF = @DOXYGEN_PROJECT_BRIEF@
+DOXYGEN_PROJECT_LOGO = @DOXYGEN_PROJECT_LOGO@
+DOXYGEN_SEARCHENGINE_URL = @DOXYGEN_SEARCHENGINE_URL@
+DOXYGEN_SERVER_BASED_SEARCH = @DOXYGEN_SERVER_BASED_SEARCH@
+DOXYGEN_VERSION_STRING = @DOXYGEN_VERSION_STRING@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+DX_CONFIG = @DX_CONFIG@
+DX_DOCDIR = @DX_DOCDIR@
+DX_DOT = @DX_DOT@
+DX_DOXYGEN = @DX_DOXYGEN@
+DX_DVIPS = @DX_DVIPS@
+DX_EGREP = @DX_EGREP@
+DX_ENV = @DX_ENV@
+DX_FLAG_chi = @DX_FLAG_chi@
+DX_FLAG_chm = @DX_FLAG_chm@
+DX_FLAG_doc = @DX_FLAG_doc@
+DX_FLAG_dot = @DX_FLAG_dot@
+DX_FLAG_html = @DX_FLAG_html@
+DX_FLAG_man = @DX_FLAG_man@
+DX_FLAG_pdf = @DX_FLAG_pdf@
+DX_FLAG_ps = @DX_FLAG_ps@
+DX_FLAG_rtf = @DX_FLAG_rtf@
+DX_FLAG_xml = @DX_FLAG_xml@
+DX_HHC = @DX_HHC@
+DX_LATEX = @DX_LATEX@
+DX_MAKEINDEX = @DX_MAKEINDEX@
+DX_PDFLATEX = @DX_PDFLATEX@
+DX_PERL = @DX_PERL@
+DX_PROJECT = @DX_PROJECT@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
@@ -446,6 +491,7 @@ H5_CPPFLAGS = @H5_CPPFLAGS@
 H5_CXXFLAGS = @H5_CXXFLAGS@
 H5_FCFLAGS = @H5_FCFLAGS@
 H5_FORTRAN_SHARED = @H5_FORTRAN_SHARED@
+H5_IS_DARWIN = @H5_IS_DARWIN@
 H5_JAVACFLAGS = @H5_JAVACFLAGS@
 H5_JAVAFLAGS = @H5_JAVAFLAGS@
 H5_JNIFLAGS = @H5_JNIFLAGS@
@@ -456,6 +502,7 @@ HAVE_DMALLOC = @HAVE_DMALLOC@
 HAVE_Fortran_INTEGER_SIZEOF_16 = @HAVE_Fortran_INTEGER_SIZEOF_16@
 HAVE_LIBHDFS = @HAVE_LIBHDFS@
 HAVE_PTHREAD = @HAVE_PTHREAD@
+HDF5_DOXYGEN = @HDF5_DOXYGEN@
 HDF5_HL = @HDF5_HL@
 HDF5_INTERFACES = @HDF5_INTERFACES@
 HDF5_TESTS = @HDF5_TESTS@
@@ -468,6 +515,7 @@ HL = @HL@
 HL_FOR = @HL_FOR@
 HSIZE_T = @HSIZE_T@
 HSSIZE_T = @HSSIZE_T@
+IGNORE_DISABLED_FILE_LOCKS = @IGNORE_DISABLED_FILE_LOCKS@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -505,6 +553,7 @@ MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
 MAP_API = @MAP_API@
 MEMORYALLOCSANITYCHECK = @MEMORYALLOCSANITYCHECK@
+MIRROR_VFD = @MIRROR_VFD@
 MKDIR_P = @MKDIR_P@
 MPE = @MPE@
 NM = @NM@
@@ -541,6 +590,7 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PREADWRITE = @PREADWRITE@
 PROFILING = @PROFILING@
 RANLIB = @RANLIB@
+RECURSIVE_RW_LOCKS = @RECURSIVE_RW_LOCKS@
 ROOT = @ROOT@
 ROS3_VFD = @ROS3_VFD@
 RUNPARALLEL = @RUNPARALLEL@
@@ -564,6 +614,7 @@ TIME = @TIME@
 TR = @TR@
 TRACE_API = @TRACE_API@
 UNAME_INFO = @UNAME_INFO@
+USE_FILE_LOCKING = @USE_FILE_LOCKING@
 USE_FILTER_DEFLATE = @USE_FILTER_DEFLATE@
 USE_FILTER_SZIP = @USE_FILTER_SZIP@
 USINGMEMCHECKER = @USINGMEMCHECKER@
@@ -656,15 +707,15 @@ LIBH5_HL = $(top_builddir)/hl/src/libhdf5_hl.la
 LIBH5F_HL = $(top_builddir)/hl/fortran/src/libhdf5hl_fortran.la
 LIBH5CPP_HL = $(top_builddir)/hl/c++/src/libhdf5_hl_cpp.la
 
-# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below  
-# has been removed. According to the official description of DESTDIR by Gnu at 
-# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is 
-# prepended to the normal and complete install path that it precedes for the 
-# purpose of installing in a temporary directory which is useful for building 
-# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another 
-# '/' at the beginning of the normal install path.  When DESTDIR is empty the  
-# path then begins with '//', which is incorrect and causes problems at least for 
-# Cygwin.   
+# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below
+# has been removed. According to the official description of DESTDIR by Gnu at
+# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is
+# prepended to the normal and complete install path that it precedes for the
+# purpose of installing in a temporary directory which is useful for building
+# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another
+# '/' at the beginning of the normal install path.  When DESTDIR is empty the
+# path then begins with '//', which is incorrect and causes problems at least for
+# Cygwin.
 
 # Scripts used to build examples
 # If only shared libraries have been installed, have h5cc build examples with
@@ -709,8 +760,8 @@ CXX_API = yes
 
 # Where to install examples
 # Note: no '/' after DESTDIR.  Explanation in commence.am
-EXAMPLEDIR = $(examplesdir)/c++
-EXAMPLETOPDIR = $(examplesdir)
+EXAMPLEDIR = ${DESTDIR}$(examplesdir)/c++
+EXAMPLETOPDIR = ${DESTDIR}$(examplesdir)
 
 # Assume that all tests in this directory are examples, and tell
 # conclude.am when to build them.
@@ -731,7 +782,7 @@ LIB = $(lib_LIBRARIES) $(lib_LTLIBRARIES) $(noinst_LIBRARIES)                 \
 PROGS = $(bin_PROGRAMS) $(bin_SCRIPTS) $(noinst_PROGRAMS) $(noinst_SCRIPTS)   \
         $(EXTRA_PROG)
 
-chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST) 
+chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST)
 TEST_EXTENSIONS = .sh
 SH_LOG_COMPILER = $(SHELL)
 AM_SH_LOG_FLAGS = 
@@ -1097,9 +1148,9 @@ uninstall-am: uninstall-local
 # commands that should be executed even if a file with the same name already
 # exists.
 .PHONY: build-check-clean build-check-p build-check-s build-lib build-progs \
-        build-tests check-clean check-install check-p check-s check-vfd \
-        check-passthrough-vol install-doc lib progs tests uninstall-doc \
-        _exec_check-s _test help
+	build-tests check-clean check-install check-p check-s check-vfd \
+	check-passthrough-vol install-doc lib progs tests uninstall-doc \
+	_exec_check-s _test help trace doxygen
 
 help:
 	@$(top_srcdir)/bin/makehelp
@@ -1150,7 +1201,7 @@ install-data-local:
 uninstall-local:
 	@$(MAKE) $(AM_MAKEFLAGS) uninstall-examples
 
-install-examples: $(EXAMPLEDIR) $(INSTALL_FILES) 
+install-examples: $(EXAMPLEDIR) $(INSTALL_FILES)
 	@for f in X $(INSTALL_FILES); do                                     \
 	  if test $$f != X; then                                             \
 	    (set -x; $(INSTALL) $(srcdir)/$$f $(EXAMPLEDIR)/. || exit 1);    \
@@ -1197,7 +1248,7 @@ installcheck-local:
 	  H5CCFLAGS="-shlib" $(MAKE) $(AM_MAKEFLAGS) check;                \
 	else                                                              \
 	  $(MAKE) $(AM_MAKEFLAGS) check;                                   \
-	fi 
+	fi
 	@if test "$(INSTALL_FILES)" -a $(TEST_EXAMPLES_SCRIPT) -a -d $(EXAMPLEDIR); then \
 	    echo "============================";                                         \
 	    echo "Testing $(TEST_EXAMPLES_SCRIPT)";                                      \
diff --git a/c++/examples/chunks.cpp b/c++/examples/chunks.cpp
index fdcb6d3..3717fcb 100644
--- a/c++/examples/chunks.cpp
+++ b/c++/examples/chunks.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
  *   We will read from the file created by extend.cpp
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cout;
 using std::endl;
 
diff --git a/c++/examples/compound.cpp b/c++/examples/compound.cpp
index 45b001e..8975845 100644
--- a/c++/examples/compound.cpp
+++ b/c++/examples/compound.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -17,11 +17,7 @@
  * and read back fields' subsets.
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cout;
 using std::endl;
 
diff --git a/c++/examples/create.cpp b/c++/examples/create.cpp
index 968c897..e55230f 100644
--- a/c++/examples/create.cpp
+++ b/c++/examples/create.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -15,11 +15,7 @@
  *  This example writes a dataset to a new HDF5 file.
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 
 #include <string>
 #include "H5Cpp.h"
diff --git a/c++/examples/extend_ds.cpp b/c++/examples/extend_ds.cpp
index 9145088..24f5f3e 100644
--- a/c++/examples/extend_ds.cpp
+++ b/c++/examples/extend_ds.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -18,11 +18,7 @@
  *
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 using std::cout;
diff --git a/c++/examples/h5group.cpp b/c++/examples/h5group.cpp
index 3d2c6d9..f9ec176 100644
--- a/c++/examples/h5group.cpp
+++ b/c++/examples/h5group.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -20,11 +20,7 @@
  * the C version is used in this example.
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cout;
 using std::endl;
 
diff --git a/c++/examples/h5tutr_cmprss.cpp b/c++/examples/h5tutr_cmprss.cpp
index 23a7aba..7c55709 100644
--- a/c++/examples/h5tutr_cmprss.cpp
+++ b/c++/examples/h5tutr_cmprss.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_crtatt.cpp b/c++/examples/h5tutr_crtatt.cpp
index fdedadf..76a4730 100644
--- a/c++/examples/h5tutr_crtatt.cpp
+++ b/c++/examples/h5tutr_crtatt.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_crtdat.cpp b/c++/examples/h5tutr_crtdat.cpp
index aef78d9..93a245c 100644
--- a/c++/examples/h5tutr_crtdat.cpp
+++ b/c++/examples/h5tutr_crtdat.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_crtgrp.cpp b/c++/examples/h5tutr_crtgrp.cpp
index 8e48eec..45d1929 100644
--- a/c++/examples/h5tutr_crtgrp.cpp
+++ b/c++/examples/h5tutr_crtgrp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_crtgrpar.cpp b/c++/examples/h5tutr_crtgrpar.cpp
index 3414cee..7c7bab5c 100644
--- a/c++/examples/h5tutr_crtgrpar.cpp
+++ b/c++/examples/h5tutr_crtgrpar.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_crtgrpd.cpp b/c++/examples/h5tutr_crtgrpd.cpp
index 8ada706..14b45c0 100644
--- a/c++/examples/h5tutr_crtgrpd.cpp
+++ b/c++/examples/h5tutr_crtgrpd.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_extend.cpp b/c++/examples/h5tutr_extend.cpp
index 71a8ffb..bd7e9a5 100644
--- a/c++/examples/h5tutr_extend.cpp
+++ b/c++/examples/h5tutr_extend.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_rdwt.cpp b/c++/examples/h5tutr_rdwt.cpp
index 4d265cd..3e1ee82 100644
--- a/c++/examples/h5tutr_rdwt.cpp
+++ b/c++/examples/h5tutr_rdwt.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/h5tutr_subset.cpp b/c++/examples/h5tutr_subset.cpp
index d4b77c3..5c62c89 100644
--- a/c++/examples/h5tutr_subset.cpp
+++ b/c++/examples/h5tutr_subset.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/examples/readdata.cpp b/c++/examples/readdata.cpp
index e088cce..e247a8e 100644
--- a/c++/examples/readdata.cpp
+++ b/c++/examples/readdata.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -17,11 +17,7 @@
 //      information about the dataset in the SDS.h5 file is obtained.
 //
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cout;
 using std::endl;
 
diff --git a/c++/examples/run-c++-ex.sh.in b/c++/examples/run-c++-ex.sh.in
index 03e1eac..a593d6c 100644
--- a/c++/examples/run-c++-ex.sh.in
+++ b/c++/examples/run-c++-ex.sh.in
@@ -6,7 +6,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 
@@ -141,5 +141,5 @@ rm *.o
 rm *.h5
 echo
 
-exit $EXIT_VALUE 
+exit $EXIT_VALUE
 
diff --git a/c++/examples/testh5c++.sh.in b/c++/examples/testh5c++.sh.in
index 907a980..44dc9e7 100644
--- a/c++/examples/testh5c++.sh.in
+++ b/c++/examples/testh5c++.sh.in
@@ -7,7 +7,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -67,11 +67,7 @@ temp_FILES="a.out $applib"
 cat > $appmain <<EOF
 #include <string>
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 
 #include "H5Cpp.h"
 
@@ -95,19 +91,11 @@ EOF
 
 # generate prog1
 cat > $prog1 <<EOF
-#ifdef OLD_HEADER_FILENAME
-    #include <iostream.h>
-#else
-    #include <iostream>
-#endif
+#include <iostream>
 #include <string>
 
-#ifndef H5_NO_NAMESPACE
-#ifndef H5_NO_STD
-    using std::cout;
-    using std::endl;
-#endif  // H5_NO_STD
-#endif
+using std::cout;
+using std::endl;
 int sub1(void)
 {
     cout << "in sub1" << endl;
@@ -117,19 +105,11 @@ EOF
 
 # generate prog2
 cat > $prog2 <<EOF
-#ifdef OLD_HEADER_FILENAME
-    #include <iostream.h>
-#else
-    #include <iostream>
-#endif
+#include <iostream>
 #include <string>
 
-#ifndef H5_NO_NAMESPACE
-#ifndef H5_NO_STD
-    using std::cout;
-    using std::endl;
-#endif  // H5_NO_STD
-#endif
+using std::cout;
+using std::endl;
 int sub2(void)
 {
     cout << "in sub2" << endl;
@@ -142,11 +122,7 @@ EOF
 cat > $hdf5main <<EOF
 #include <string>
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 
 #include "H5Cpp.h"
 
diff --git a/c++/examples/writedata.cpp b/c++/examples/writedata.cpp
index 61cd43a..f2b715a 100644
--- a/c++/examples/writedata.cpp
+++ b/c++/examples/writedata.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -20,11 +20,7 @@
  *  file is closed. Program reopens the file and reads and displays the result.
  */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cout;
 using std::endl;
 
diff --git a/c++/src/CMakeLists.txt b/c++/src/CMakeLists.txt
index 39f0f3a..835d422 100644
--- a/c++/src/CMakeLists.txt
+++ b/c++/src/CMakeLists.txt
@@ -5,7 +5,7 @@ project (HDF5_CPP_SRC CXX)
 # Generate configure file
 #-----------------------------------------------------------------------------
 configure_file (${HDF_RESOURCES_DIR}/H5cxx_config.h.in
-                ${HDF5_BINARY_DIR}/H5cxx_pubconf.h
+                ${HDF5_SRC_BINARY_DIR}/H5cxx_pubconf.h
 )
 
 #-----------------------------------------------------------------------------
@@ -87,9 +87,10 @@ set (CPP_HDRS
 if (NOT ONLY_SHARED_LIBS)
   add_library (${HDF5_CPP_LIB_TARGET} STATIC ${CPP_SOURCES} ${CPP_HDRS})
   target_include_directories (${HDF5_CPP_LIB_TARGET}
-      PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
+      PRIVATE "${HDF5_SRC_DIR};${HDF5_SRC_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
       INTERFACE "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/include>"
   )
+  target_compile_options(${HDF5_CPP_LIB_TARGET} PRIVATE "${HDF5_CMAKE_CXX_FLAGS}")
   target_compile_definitions(${HDF5_CPP_LIB_TARGET}
       PRIVATE $<$<BOOL:${HDF5_ENABLE_PARALLEL}>:MPICH_SKIP_MPICXX;MPICH_IGNORE_CXX_SEEK># Parallel/MPI, prevent spurious cpp/cxx warnings
   )
@@ -104,9 +105,10 @@ endif ()
 if (BUILD_SHARED_LIBS)
   add_library (${HDF5_CPP_LIBSH_TARGET} SHARED ${CPP_SOURCES} ${CPP_HDRS})
   target_include_directories (${HDF5_CPP_LIBSH_TARGET}
-      PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
+      PRIVATE "${HDF5_SRC_DIR};${HDF5_SRC_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
       INTERFACE "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/include>"
   )
+  target_compile_options(${HDF5_CPP_LIBSH_TARGET} PRIVATE "${HDF5_CMAKE_CXX_FLAGS}")
   target_compile_definitions(${HDF5_CPP_LIBSH_TARGET}
       PUBLIC "H5_BUILT_AS_DYNAMIC_LIB"
       PRIVATE $<$<BOOL:${HDF5_ENABLE_PARALLEL}>:MPICH_SKIP_MPICXX;MPICH_IGNORE_CXX_SEEK># Parallel/MPI, prevent spurious cpp/cxx warnings
@@ -115,7 +117,7 @@ if (BUILD_SHARED_LIBS)
   target_link_libraries (${HDF5_CPP_LIBSH_TARGET}
       PUBLIC ${HDF5_LIBSH_TARGET}
   )
-  if (MINGW)
+  if (MINGW AND HDF5_MINGW_STATIC_GCC_LIBS)
     target_link_options (${HDF5_CPP_LIBSH_TARGET}
         PRIVATE -static-libgcc -static-libstdc++
     )
@@ -127,6 +129,17 @@ if (BUILD_SHARED_LIBS)
 endif ()
 
 #-----------------------------------------------------------------------------
+# Add Target to clang-format
+#-----------------------------------------------------------------------------
+if (HDF5_ENABLE_FORMATTERS)
+  if (NOT ONLY_SHARED_LIBS)
+    clang_format (HDF5_CPP_SRC_FORMAT ${HDF5_CPP_LIB_TARGET})
+  else ()
+    clang_format (HDF5_CPP_SRC_FORMAT ${HDF5_CPP_LIBSH_TARGET})
+  endif ()
+endif ()
+
+#-----------------------------------------------------------------------------
 # Add file(s) to CMake Install
 #-----------------------------------------------------------------------------
 install (
@@ -181,22 +194,26 @@ if (BUILD_SHARED_LIBS)
   set (_PKG_CONFIG_SH_LIBS "${_PKG_CONFIG_SH_LIBS} -l${HDF5_CPP_LIB_CORENAME}")
 endif ()
 
-set (_PKG_CONFIG_REQUIRES "${HDF5_LIB_CORENAME}")
-set (_PKG_CONFIG_REQUIRES_PRIVATE "${HDF5_LIB_CORENAME}")
+set (_PKG_CONFIG_REQUIRES "${HDF5_LIB_CORENAME}-${HDF5_PACKAGE_VERSION}")
+set (_PKG_CONFIG_REQUIRES_PRIVATE "${HDF5_LIB_CORENAME}-${HDF5_PACKAGE_VERSION}")
 
 configure_file (
-    ${HDF_RESOURCES_DIR}/libhdf5.pc.in
-    ${HDF5_BINARY_DIR}/CMakeFiles/${HDF5_CPP_LIB_CORENAME}-${HDF5_PACKAGE_VERSION}.pc
+    ${HDF_CONFIG_DIR}/libhdf5.pc.in
+    ${HDF5_BINARY_DIR}/CMakeFiles/${HDF5_CPP_LIB_CORENAME}.pc
     @ONLY
 )
 install (
-    FILES ${HDF5_BINARY_DIR}/CMakeFiles/${HDF5_CPP_LIB_CORENAME}-${HDF5_PACKAGE_VERSION}.pc
+    FILES ${HDF5_BINARY_DIR}/CMakeFiles/${HDF5_CPP_LIB_CORENAME}.pc
     DESTINATION ${HDF5_INSTALL_LIB_DIR}/pkgconfig
     COMPONENT cpplibraries
 )
 
 if (NOT WIN32 AND NOT MINGW)
-  set (_PKG_CONFIG_COMPILER ${CMAKE_CXX_COMPILER})
+  if (HDF5_ENABLE_PARALLEL AND MPI_CXX_FOUND)
+    set (_PKG_CONFIG_COMPILER ${MPI_CXX_COMPILER})
+  else ()
+    set (_PKG_CONFIG_COMPILER ${CMAKE_CXX_COMPILER})
+  endif ()
   configure_file (
       ${HDF_RESOURCES_DIR}/libh5cc.in
       ${HDF5_BINARY_DIR}/CMakeFiles/h5c++
diff --git a/c++/src/H5AbstractDs.cpp b/c++/src/H5AbstractDs.cpp
index 77d9248..eeb0155 100644
--- a/c++/src/H5AbstractDs.cpp
+++ b/c++/src/H5AbstractDs.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5AbstractDs.h b/c++/src/H5AbstractDs.h
index 0c66845..b84867b 100644
--- a/c++/src/H5AbstractDs.h
+++ b/c++/src/H5AbstractDs.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __AbstractDs_H
-#define __AbstractDs_H
+#ifndef H5AbstractDs_H
+#define H5AbstractDs_H
 
 namespace H5 {
 
@@ -81,4 +81,4 @@ class H5_DLLCPP AbstractDs {
 }; // end of AbstractDs
 } // namespace H5
 
-#endif // __AbstractDs_H
+#endif // H5AbstractDs_H
diff --git a/c++/src/H5Alltypes.h b/c++/src/H5Alltypes.h
index d67f3fe..7a14774 100644
--- a/c++/src/H5Alltypes.h
+++ b/c++/src/H5Alltypes.h
@@ -7,7 +7,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5ArrayType.cpp b/c++/src/H5ArrayType.cpp
index a567f8b..6999f1b 100644
--- a/c++/src/H5ArrayType.cpp
+++ b/c++/src/H5ArrayType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5ArrayType.h b/c++/src/H5ArrayType.h
index 09f1592..4302352 100644
--- a/c++/src/H5ArrayType.h
+++ b/c++/src/H5ArrayType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5ArrayType_H
-#define __H5ArrayType_H
+#ifndef H5ArrayType_H
+#define H5ArrayType_H
 
 namespace H5 {
 
@@ -69,4 +69,4 @@ class H5_DLLCPP ArrayType : public DataType {
 }; // end of ArrayType
 } // namespace H5
 
-#endif // __H5ArrayType_H
+#endif // H5ArrayType_H
diff --git a/c++/src/H5AtomType.cpp b/c++/src/H5AtomType.cpp
index 167b3d1..0b48046 100644
--- a/c++/src/H5AtomType.cpp
+++ b/c++/src/H5AtomType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5AtomType.h b/c++/src/H5AtomType.h
index 337aca6..84da5e9 100644
--- a/c++/src/H5AtomType.h
+++ b/c++/src/H5AtomType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5AtomType_H
-#define __H5AtomType_H
+#ifndef H5AtomType_H
+#define H5AtomType_H
 
 namespace H5 {
 
@@ -83,4 +83,4 @@ class H5_DLLCPP AtomType : public DataType {
 }; // end of AtomType
 } // namespace H5
 
-#endif // __H5AtomType_H
+#endif // H5AtomType_H
diff --git a/c++/src/H5Attribute.cpp b/c++/src/H5Attribute.cpp
index 1137eb8..0e37c2b 100644
--- a/c++/src/H5Attribute.cpp
+++ b/c++/src/H5Attribute.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5private.h" // for HDfree
@@ -41,7 +37,7 @@ namespace H5 {
 using std::cerr;
 using std::endl;
 
-class H5_DLLCPP H5Object; // forward declaration for UserData4Aiterate
+class H5Object; // forward declaration for UserData4Aiterate
 
 //--------------------------------------------------------------------------
 // Function:    Attribute default constructor
@@ -314,7 +310,7 @@ Attribute::getName(char *attr_name, size_t buf_size) const
 H5std_string
 Attribute::getName() const
 {
-    H5std_string attr_name(""); // attribute name to return
+    H5std_string attr_name; // attribute name to return
 
     // Preliminary call to get the size of the attribute name
     ssize_t name_size = H5Aget_name(id, static_cast<size_t>(0), NULL);
diff --git a/c++/src/H5Attribute.h b/c++/src/H5Attribute.h
index 8783c00..41e5a31 100644
--- a/c++/src/H5Attribute.h
+++ b/c++/src/H5Attribute.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Attribute_H
-#define __H5Attribute_H
+#ifndef H5Attribute_H
+#define H5Attribute_H
 
 namespace H5 {
 
@@ -104,4 +104,4 @@ class H5_DLLCPP Attribute : public AbstractDs, public H5Location {
 }; // end of Attribute
 } // namespace H5
 
-#endif // __H5Attribute_H
+#endif // H5Attribute_H
diff --git a/c++/src/H5Classes.h b/c++/src/H5Classes.h
index 618b46c..7820ce2 100644
--- a/c++/src/H5Classes.h
+++ b/c++/src/H5Classes.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Classes_H
-#define __H5Classes_H
+#ifndef H5Classes_H
+#define H5Classes_H
 
 namespace H5 {
 class Exception;
@@ -43,4 +43,4 @@ class H5File;
 class Attribute;
 class H5Library;
 } // namespace H5
-#endif // __H5Classes_H
+#endif // H5Classes_H
diff --git a/c++/src/H5CommonFG.cpp b/c++/src/H5CommonFG.cpp
index 52f9175..fb602d9 100644
--- a/c++/src/H5CommonFG.cpp
+++ b/c++/src/H5CommonFG.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5CommonFG.h b/c++/src/H5CommonFG.h
index c3aef41..d87f9ca 100644
--- a/c++/src/H5CommonFG.h
+++ b/c++/src/H5CommonFG.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __CommonFG_H
-#define __CommonFG_H
+#ifndef H5CommonFG_H
+#define H5CommonFG_H
 
 namespace H5 {
 
@@ -83,7 +83,7 @@ class H5_DLLCPP CommonFG {
 }; // end of CommonFG
 } // namespace H5
 
-#endif // __CommonFG_H
+#endif // H5CommonFG_H
 
 /***************************************************************************
                                 Design Note
diff --git a/c++/src/H5CompType.cpp b/c++/src/H5CompType.cpp
index 5eb030c..3b38c6d 100644
--- a/c++/src/H5CompType.cpp
+++ b/c++/src/H5CompType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5CompType.h b/c++/src/H5CompType.h
index 66392d9..6a4c093 100644
--- a/c++/src/H5CompType.h
+++ b/c++/src/H5CompType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5CompType_H
-#define __H5CompType_H
+#ifndef H5CompType_H
+#define H5CompType_H
 
 namespace H5 {
 
@@ -124,4 +124,4 @@ class H5_DLLCPP CompType : public DataType {
 }; // end of CompType
 } // namespace H5
 
-#endif // __H5CompType_H
+#endif // H5CompType_H
diff --git a/c++/src/H5Cpp.h b/c++/src/H5Cpp.h
index e614d69..9272bdb 100644
--- a/c++/src/H5Cpp.h
+++ b/c++/src/H5Cpp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Cpp_H
-#define __H5Cpp_H
+#ifndef H5Cpp_H
+#define H5Cpp_H
 
 #include "H5Include.h"
 #include "H5Exception.h"
@@ -58,4 +58,4 @@
 #define HOFFSET(TYPE, MEMBER) ((size_t) & ((TYPE *)0)->MEMBER)
 #endif
 
-#endif // __H5Cpp_H
+#endif // H5Cpp_H
diff --git a/c++/src/H5CppDoc.h b/c++/src/H5CppDoc.h
index 1108181..4337a6f 100644
--- a/c++/src/H5CppDoc.h
+++ b/c++/src/H5CppDoc.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5CppDoc_H
-#define __H5CppDoc_H
+#ifndef H5CppDoc_H
+#define H5CppDoc_H
 
 //-------------------------------------------------------------------------
 // The following section will be used to generate the 'Mainpage'
@@ -92,4 +92,4 @@
 ///        This example shows how to work with groups.
 ///\example     h5group.cpp
 
-#endif // __H5CppDoc_H
+#endif // H5CppDoc_H
diff --git a/c++/src/H5DaccProp.cpp b/c++/src/H5DaccProp.cpp
index 0a203d2..35c071a 100644
--- a/c++/src/H5DaccProp.cpp
+++ b/c++/src/H5DaccProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5DaccProp.h b/c++/src/H5DaccProp.h
index a467fac..7d6b250 100644
--- a/c++/src/H5DaccProp.h
+++ b/c++/src/H5DaccProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DSetAccPropList_H
-#define __H5DSetAccPropList_H
+#ifndef H5DSetAccPropList_H
+#define H5DSetAccPropList_H
 
 namespace H5 {
 
@@ -69,4 +69,4 @@ class H5_DLLCPP DSetAccPropList : public LinkAccPropList {
 }; // end of DSetAccPropList
 } // namespace H5
 
-#endif // __H5DSetAccPropList_H
+#endif // H5DSetAccPropList_H
diff --git a/c++/src/H5DataSet.cpp b/c++/src/H5DataSet.cpp
index 607f88b..47031db 100644
--- a/c++/src/H5DataSet.cpp
+++ b/c++/src/H5DataSet.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5private.h" // for HDfree
@@ -46,7 +42,6 @@ using std::endl;
 //--------------------------------------------------------------------------
 // Function:    DataSet default constructor
 ///\brief       Default constructor: creates a stub DataSet.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 DataSet::DataSet() : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
 {
@@ -56,7 +51,6 @@ DataSet::DataSet() : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
 // Function:    DataSet overloaded constructor
 ///\brief       Creates an DataSet object using the id of an existing dataset.
 ///\param       existing_id - IN: Id of an existing dataset
-// Programmer   Binh-Minh Ribler - 2000
 // Description
 //              incRefCount() is needed here to prevent the id from being closed
 //              prematurely.  That is, when application uses the id of an
@@ -73,7 +67,6 @@ DataSet::DataSet(const hid_t existing_id) : H5Object(), AbstractDs(), id(existin
 // Function:    DataSet copy constructor
 ///\brief       Copy constructor: same HDF5 object as \a original
 ///\param       original - IN: DataSet instance to copy
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 DataSet::DataSet(const DataSet &original) : H5Object(), AbstractDs(), id(original.id)
 {
@@ -81,6 +74,20 @@ DataSet::DataSet(const DataSet &original) : H5Object(), AbstractDs(), id(origina
 }
 
 //--------------------------------------------------------------------------
+// Function:    DataSet assignment operator
+///\brief       Assignment operator: same HDF5 object as \a original
+///\param       original - IN: DataSet instance to copy
+//--------------------------------------------------------------------------
+DataSet &
+DataSet::operator=(const DataSet &original)
+{
+    if (this != &original) {
+        setId(original.id);
+    }
+    return (*this);
+}
+
+//--------------------------------------------------------------------------
 // Function:    DataSet overload constructor - dereference
 ///\brief       Given a reference, ref, to an hdf5 location, creates a
 ///             DataSet object
@@ -93,7 +100,6 @@ DataSet::DataSet(const DataSet &original) : H5Object(), AbstractDs(), id(origina
 ///\par Description
 ///             \c loc can be DataSet, Group, H5File, or named DataType, that
 ///             is a datatype that has been named by DataType::commit.
-// Programmer   Binh-Minh Ribler - Oct, 2006
 //--------------------------------------------------------------------------
 DataSet::DataSet(const H5Location &loc, const void *ref, H5R_type_t ref_type, const PropList &plist)
     : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
@@ -110,7 +116,6 @@ DataSet::DataSet(const H5Location &loc, const void *ref, H5R_type_t ref_type, co
 ///\param       ref_type - IN: Reference type - default to H5R_OBJECT
 ///\param       plist - IN: Property list - default to PropList::DEFAULT
 ///\exception   H5::ReferenceException
-// Programmer   Binh-Minh Ribler - Oct, 2006
 //--------------------------------------------------------------------------
 DataSet::DataSet(const Attribute &attr, const void *ref, H5R_type_t ref_type, const PropList &plist)
     : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
@@ -123,7 +128,6 @@ DataSet::DataSet(const Attribute &attr, const void *ref, H5R_type_t ref_type, co
 ///\brief       Gets a copy of the dataspace of this dataset.
 ///\return      DataSpace instance
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 DataSpace
 DataSet::getSpace() const
@@ -160,7 +164,6 @@ DataSet::p_get_type() const
 ///\brief       Gets the dataset creation property list.
 ///\return      DSetCreatPropList instance
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 DSetCreatPropList
 DataSet::getCreatePlist() const
@@ -204,7 +207,6 @@ DataSet::getAccessPlist() const
 ///\exception   H5::DataSetIException
 // Note:        H5Dget_storage_size returns 0 when there is no data.  This
 //              function should have no failure. (from SLU)
-// Programmer   Binh-Minh Ribler - Mar, 2005
 //--------------------------------------------------------------------------
 hsize_t
 DataSet::getStorageSize() const
@@ -218,7 +220,6 @@ DataSet::getStorageSize() const
 ///\brief       Gets the size in memory of the dataset's data.
 ///\return      Size of data (in memory)
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - Apr 2009
 //--------------------------------------------------------------------------
 size_t
 DataSet::getInMemDataSize() const
@@ -276,7 +277,6 @@ DataSet::getInMemDataSize() const
 ///\brief       Returns the address of this dataset in the file.
 ///\return      Address of dataset
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 haddr_t
 DataSet::getOffset() const
@@ -295,7 +295,6 @@ DataSet::getOffset() const
 ///\brief       Determines whether space has been allocated for a dataset.
 ///\param       status - OUT: Space allocation status
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::getSpaceStatus(H5D_space_status_t &status) const
@@ -313,7 +312,6 @@ DataSet::getSpaceStatus(H5D_space_status_t &status) const
 ///\param       space - IN: Selection for the memory buffer
 ///\return      Amount of storage
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 hsize_t
 DataSet::getVlenBufSize(const DataType &type, const DataSpace &space) const
@@ -338,7 +336,6 @@ DataSet::getVlenBufSize(const DataType &type, const DataSpace &space) const
 //              misses const's.  This wrapper will be removed in future release.
 // Return       Amount of storage
 // Exception    H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //              Modified to call its replacement. -BMR, 2014/04/16
 //              Removed from documentation. -BMR, 2016/03/07 1.8.17 and 1.10.0
@@ -358,7 +355,6 @@ DataSet::getVlenBufSize(const DataType &type, const DataSpace &space) const
 ///\param       xfer_plist - IN: Property list used to create the buffer
 ///\param       buf - IN: Pointer to the buffer to be reclaimed
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::vlenReclaim(const DataType &type, const DataSpace &space, const DSetMemXferPropList &xfer_plist,
@@ -384,7 +380,6 @@ DataSet::vlenReclaim(const DataType &type, const DataSpace &space, const DSetMem
 ///\param       xfer_plist - IN: Property list used to create the buffer
 ///\param       buf - IN: Pointer to the buffer to be reclaimed
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //\parDescription
 //              This function has better prototype for the users than the
 //              other, which might be removed at some point. BMR - 2006/12/20
@@ -417,7 +412,6 @@ DataSet::vlenReclaim(void *buf, const DataType &type, const DataSpace &space,
 ///             This function reads raw data from this dataset into the
 ///             buffer \a buf, converting from file datatype and dataspace
 ///             to memory datatype \a mem_type and dataspace \a mem_space.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::read(void *buf, const DataType &mem_type, const DataSpace &mem_space, const DataSpace &file_space,
@@ -445,7 +439,6 @@ DataSet::read(void *buf, const DataType &mem_type, const DataSpace &mem_space, c
 ///\param       file_space - IN: Dataset's dataspace in the file
 ///\param       xfer_plist - IN: Transfer property list for this I/O operation
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //      Jul 2009
 //              Follow the change to Attribute::read and use the following
@@ -494,7 +487,6 @@ DataSet::read(H5std_string &strg, const DataType &mem_type, const DataSpace &mem
 ///             \a buf to a dataset, converting from memory datatype
 ///             \a mem_type and dataspace \a mem_space to file datatype
 ///             and dataspace.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::write(const void *buf, const DataType &mem_type, const DataSpace &mem_space,
@@ -516,7 +508,6 @@ DataSet::write(const void *buf, const DataType &mem_type, const DataSpace &mem_s
 // Function:    DataSet::write
 ///\brief       This is an overloaded member function, provided for convenience.
 ///             It takes a reference to a \c H5std_string for the buffer.
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //      Jul 2009
 //              Modified to pass the buffer into H5Dwrite properly depending
@@ -572,7 +563,6 @@ DataSet::write(const H5std_string &strg, const DataType &mem_type, const DataSpa
 ///\exception   H5::DataSetIException
 ///\note        This function may not work correctly yet - it's still
 ///             under development.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 int
 DataSet::iterateElems(void *buf, const DataType &type, const DataSpace &space, H5D_operator_t op,
@@ -598,7 +588,6 @@ DataSet::iterateElems(void *buf, const DataType &type, const DataSpace &space, H
 ///\par Description
 ///             For information, please refer to the H5Dset_extent API in
 ///             the HDF5 C Reference Manual.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::extend(const hsize_t *size) const
@@ -617,7 +606,6 @@ DataSet::extend(const hsize_t *size) const
 ///\param       buf_type - IN: Datatype of the elements in buffer
 ///\param       space - IN: Dataspace describing memory buffer & containing selection to use
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2014
 //--------------------------------------------------------------------------
 void
 DataSet::fillMemBuf(const void *fill, const DataType &fill_type, void *buf, const DataType &buf_type,
@@ -643,7 +631,6 @@ DataSet::fillMemBuf(const void *fill, const DataType &fill_type, void *buf, cons
 // Param        buf_type - IN: Datatype of the elements in buffer
 // Param        space - IN: Dataspace describing memory buffer & containing selection to use
 // Exception    H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //              Modified to call its replacement. -BMR, 2014/04/16
 //              Removed from documentation. -BMR, 2016/03/07 1.8.17 and 1.10.0
@@ -662,7 +649,6 @@ DataSet::fillMemBuf(const void *fill, const DataType &fill_type, void *buf, cons
 ///\param       buf_type - IN: Datatype of the elements in buffer
 ///\param       space - IN: Dataspace describing memory buffer & containing selection to use
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::fillMemBuf(void *buf, const DataType &buf_type, const DataSpace &space) const
@@ -684,7 +670,6 @@ DataSet::fillMemBuf(void *buf, const DataType &buf_type, const DataSpace &space)
 // Param        buf_type - IN: Datatype of the elements in buffer
 // Param        space - IN: Dataspace describing memory buffer & containing selection to use
 // Exception    H5::DataSetIException
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //              Modified to call its replacement. -BMR, 2014/04/16
 //              Removed from documentation. -BMR, 2016/03/07 1.8.17 and 1.10.0
@@ -704,7 +689,6 @@ DataSet::fillMemBuf(void *buf, const DataType &buf_type, const DataSpace &space)
 //              AbstractDs and Attribute are moved out of H5Object.  In
 //              addition, member IdComponent::id is moved into subclasses, and
 //              IdComponent::getId now becomes pure virtual function.
-// Programmer   Binh-Minh Ribler - May, 2008
 //--------------------------------------------------------------------------
 hid_t
 DataSet::getId() const
@@ -714,11 +698,10 @@ DataSet::getId() const
 
 //--------------------------------------------------------------------------
 // Function:    DataSet::p_read_fixed_len (private)
-// brief       Reads a fixed length \a H5std_string from a dataset.
-// param       mem_type  - IN: DataSet datatype (in memory)
-// param       strg      - IN: Buffer for read string
-// exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - Jul, 2009
+// brief        Reads a fixed length \a H5std_string from a dataset.
+// param        mem_type  - IN: DataSet datatype (in memory)
+// param        strg      - IN: Buffer for read string
+// exceptio n   H5::DataSetIException
 // Modification
 //      Jul 2009
 //              Added in follow to the change in Attribute::read
@@ -752,11 +735,10 @@ DataSet::p_read_fixed_len(const hid_t mem_type_id, const hid_t mem_space_id, con
 
 //--------------------------------------------------------------------------
 // Function:    DataSet::p_read_variable_len (private)
-// brief       Reads a variable length \a H5std_string from an dataset.
-// param       mem_type  - IN: DataSet datatype (in memory)
-// param       strg      - IN: Buffer for read string
-// exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - Jul, 2009
+// brief        Reads a variable length \a H5std_string from an dataset.
+// param        mem_type  - IN: DataSet datatype (in memory)
+// param        strg      - IN: Buffer for read string
+// exception    H5::DataSetIException
 // Modification
 //      Jul 2009
 //              Added in follow to the change in Attribute::read
@@ -791,7 +773,6 @@ DataSet::p_read_variable_len(const hid_t mem_type_id, const hid_t mem_space_id,
 //              The underlaying reference counting in the C library ensures
 //              that the current valid id of this object is properly closed.
 //              Then the object's id is reset to the new id.
-// Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void
 DataSet::p_setId(const hid_t new_id)
@@ -815,7 +796,6 @@ DataSet::p_setId(const hid_t new_id)
 //              Applications shouldn't need to use it.
 // param        dset   - IN/OUT: DataSet object to be changed
 // param        new_id - IN: New id to set
-// Programmer   Binh-Minh Ribler - 2015
 //--------------------------------------------------------------------------
 void
 f_PropList_setId(PropList *plist, hid_t new_id)
@@ -830,7 +810,6 @@ f_PropList_setId(PropList *plist, hid_t new_id)
 ///\brief       Closes this dataset.
 ///
 ///\exception   H5::DataSetIException
-// Programmer   Binh-Minh Ribler - Mar 9, 2005
 //--------------------------------------------------------------------------
 void
 DataSet::close()
@@ -848,7 +827,6 @@ DataSet::close()
 //--------------------------------------------------------------------------
 // Function:    DataSet destructor
 ///\brief       Properly terminates access to this dataset.
-// Programmer   Binh-Minh Ribler - 2000
 // Modification
 //              - Replaced resetIdComponent() with decRefCount() to use C
 //              library ID reference counting mechanism - BMR, Jun 1, 2004
diff --git a/c++/src/H5DataSet.h b/c++/src/H5DataSet.h
index 0bf7589..333ed7a 100644
--- a/c++/src/H5DataSet.h
+++ b/c++/src/H5DataSet.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DataSet_H
-#define __H5DataSet_H
+#ifndef H5DataSet_H
+#define H5DataSet_H
 
 namespace H5 {
 
@@ -117,6 +117,9 @@ class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
     // Copy constructor - same as the original DataSet.
     DataSet(const DataSet &original);
 
+    // Assignment operator
+    DataSet &operator=(const DataSet &original);
+
     // Creates a copy of an existing DataSet using its id.
     DataSet(const hid_t existing_id);
 
@@ -153,4 +156,4 @@ class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
 }; // end of DataSet
 } // namespace H5
 
-#endif // __H5DataSet_H
+#endif // H5DataSet_H
diff --git a/c++/src/H5DataSpace.cpp b/c++/src/H5DataSpace.cpp
index 47fdbbc..0485530 100644
--- a/c++/src/H5DataSpace.cpp
+++ b/c++/src/H5DataSpace.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5Include.h"
diff --git a/c++/src/H5DataSpace.h b/c++/src/H5DataSpace.h
index b5e92bc..470de74 100644
--- a/c++/src/H5DataSpace.h
+++ b/c++/src/H5DataSpace.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DataSpace_H
-#define __H5DataSpace_H
+#ifndef H5DataSpace_H
+#define H5DataSpace_H
 
 namespace H5 {
 
@@ -43,7 +43,7 @@ class H5_DLLCPP DataSpace : public IdComponent {
     DataSpace &operator=(const DataSpace &rhs);
 
     // Closes this dataspace.
-    virtual void close();
+    virtual void close() H5_OVERRIDE;
 
     // Makes copy of an existing dataspace.
     void copy(const DataSpace &like_space);
@@ -115,13 +115,13 @@ class H5_DLLCPP DataSpace : public IdComponent {
 
     ///\brief Returns this class name.
     virtual H5std_string
-    fromClass() const
+    fromClass() const H5_OVERRIDE
     {
         return ("DataSpace");
     }
 
     // Gets the dataspace id.
-    virtual hid_t getId() const;
+    virtual hid_t getId() const H5_OVERRIDE;
 
     // Deletes the global constant
     static void deleteConstants();
@@ -133,7 +133,7 @@ class H5_DLLCPP DataSpace : public IdComponent {
 
   protected:
     // Sets the dataspace id.
-    virtual void p_setId(const hid_t new_id);
+    virtual void p_setId(const hid_t new_id) H5_OVERRIDE;
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
@@ -155,4 +155,4 @@ class H5_DLLCPP DataSpace : public IdComponent {
 }; // end of DataSpace
 } // namespace H5
 
-#endif // __H5DataSpace_H
+#endif // H5DataSpace_H
diff --git a/c++/src/H5DataType.cpp b/c++/src/H5DataType.cpp
index eecce00..3228dcb 100644
--- a/c++/src/H5DataType.cpp
+++ b/c++/src/H5DataType.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5Include.h"
diff --git a/c++/src/H5DataType.h b/c++/src/H5DataType.h
index 32badfe..49f5348 100644
--- a/c++/src/H5DataType.h
+++ b/c++/src/H5DataType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DataType_H
-#define __H5DataType_H
+#ifndef H5DataType_H
+#define H5DataType_H
 
 namespace H5 {
 
@@ -183,4 +183,4 @@ class H5_DLLCPP DataType : public H5Object {
 }; // end of DataType
 } // namespace H5
 
-#endif // __H5DataType_H
+#endif // H5DataType_H
diff --git a/c++/src/H5DcreatProp.cpp b/c++/src/H5DcreatProp.cpp
index 6cca01a..4c71d5e 100644
--- a/c++/src/H5DcreatProp.cpp
+++ b/c++/src/H5DcreatProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5DcreatProp.h b/c++/src/H5DcreatProp.h
index e73ec32..3c032ee 100644
--- a/c++/src/H5DcreatProp.h
+++ b/c++/src/H5DcreatProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DSCreatPropList_H
-#define __H5DSCreatPropList_H
+#ifndef H5DSCreatPropList_H
+#define H5DSCreatPropList_H
 
 namespace H5 {
 
@@ -159,4 +159,4 @@ class H5_DLLCPP DSetCreatPropList : public ObjCreatPropList {
 }; // end of DSetCreatPropList
 } // namespace H5
 
-#endif // __H5DSCreatPropList_H
+#endif // H5DSCreatPropList_H
diff --git a/c++/src/H5DxferProp.cpp b/c++/src/H5DxferProp.cpp
index ed7df9a..2b50de4 100644
--- a/c++/src/H5DxferProp.cpp
+++ b/c++/src/H5DxferProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -312,7 +312,7 @@ DSetMemXferPropList::getDataTransform() const
 {
     // Initialize string to "", so that if there is no expression, the returned
     // string will be empty
-    H5std_string expression("");
+    H5std_string expression;
 
     // Preliminary call to get the expression's length
     ssize_t exp_len = H5Pget_data_transform(id, NULL, (size_t)0);
diff --git a/c++/src/H5DxferProp.h b/c++/src/H5DxferProp.h
index 59ece6f..1e4d668 100644
--- a/c++/src/H5DxferProp.h
+++ b/c++/src/H5DxferProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5DSetMemXferPropList_H
-#define __H5DSetMemXferPropList_H
+#ifndef H5DSetMemXferPropList_H
+#define H5DSetMemXferPropList_H
 
 namespace H5 {
 
@@ -131,4 +131,4 @@ class H5_DLLCPP DSetMemXferPropList : public PropList {
 }; // end of DSetMemXferPropList
 } // namespace H5
 
-#endif // __H5DSetMemXferPropList_H
+#endif // H5DSetMemXferPropList_H
diff --git a/c++/src/H5EnumType.cpp b/c++/src/H5EnumType.cpp
index a034a24..6c7b533 100644
--- a/c++/src/H5EnumType.cpp
+++ b/c++/src/H5EnumType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5EnumType.h b/c++/src/H5EnumType.h
index e3d9a50..484405a 100644
--- a/c++/src/H5EnumType.h
+++ b/c++/src/H5EnumType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5EnumType_H
-#define __H5EnumType_H
+#ifndef H5EnumType_H
+#define H5EnumType_H
 
 namespace H5 {
 
@@ -87,4 +87,4 @@ class H5_DLLCPP EnumType : public DataType {
 }; // end of EnumType
 } // namespace H5
 
-#endif // __H5EnumType_H
+#endif // H5EnumType_H
diff --git a/c++/src/H5Exception.cpp b/c++/src/H5Exception.cpp
index 934b179..6769439 100644
--- a/c++/src/H5Exception.cpp
+++ b/c++/src/H5Exception.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -25,7 +25,7 @@ const char Exception::DEFAULT_MSG[] = "No detailed information provided";
 ///\brief       Default constructor.
 // Programmer   Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Exception::Exception() : detail_message(""), func_name("")
+Exception::Exception()
 {
 }
 
diff --git a/c++/src/H5Exception.h b/c++/src/H5Exception.h
index 44edac2..9970d22 100644
--- a/c++/src/H5Exception.h
+++ b/c++/src/H5Exception.h
@@ -7,22 +7,18 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Exception_H
-#define __H5Exception_H
+#ifndef H5Exception_H
+#define H5Exception_H
 
 #include <string>
 
 namespace H5 {
-#ifdef H5_NO_STD
-#define H5std_string ::string
-#else
 #define H5std_string std::string
-#endif
 
 /*! \class Exception
     \brief Exception provides wrappers of HDF5 error handling functions.
@@ -94,86 +90,86 @@ class H5_DLLCPP FileIException : public Exception {
   public:
     FileIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     FileIException();
-    virtual ~FileIException() throw();
+    virtual ~FileIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP GroupIException : public Exception {
   public:
     GroupIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     GroupIException();
-    virtual ~GroupIException() throw();
+    virtual ~GroupIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP DataSpaceIException : public Exception {
   public:
     DataSpaceIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     DataSpaceIException();
-    virtual ~DataSpaceIException() throw();
+    virtual ~DataSpaceIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP DataTypeIException : public Exception {
   public:
     DataTypeIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     DataTypeIException();
-    virtual ~DataTypeIException() throw();
+    virtual ~DataTypeIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP ObjHeaderIException : public Exception {
   public:
     ObjHeaderIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     ObjHeaderIException();
-    virtual ~ObjHeaderIException() throw();
+    virtual ~ObjHeaderIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP PropListIException : public Exception {
   public:
     PropListIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     PropListIException();
-    virtual ~PropListIException() throw();
+    virtual ~PropListIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP DataSetIException : public Exception {
   public:
     DataSetIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     DataSetIException();
-    virtual ~DataSetIException() throw();
+    virtual ~DataSetIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP AttributeIException : public Exception {
   public:
     AttributeIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     AttributeIException();
-    virtual ~AttributeIException() throw();
+    virtual ~AttributeIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP ReferenceException : public Exception {
   public:
     ReferenceException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     ReferenceException();
-    virtual ~ReferenceException() throw();
+    virtual ~ReferenceException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP LibraryIException : public Exception {
   public:
     LibraryIException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     LibraryIException();
-    virtual ~LibraryIException() throw();
+    virtual ~LibraryIException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP LocationException : public Exception {
   public:
     LocationException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     LocationException();
-    virtual ~LocationException() throw();
+    virtual ~LocationException() throw() H5_OVERRIDE;
 };
 
 class H5_DLLCPP IdComponentException : public Exception {
   public:
     IdComponentException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     IdComponentException();
-    virtual ~IdComponentException() throw();
+    virtual ~IdComponentException() throw() H5_OVERRIDE;
 
 }; // end of IdComponentException
 } // namespace H5
 
-#endif // __H5Exception_H
+#endif // H5Exception_H
diff --git a/c++/src/H5FaccProp.cpp b/c++/src/H5FaccProp.cpp
index f6f35c5..005e599 100644
--- a/c++/src/H5FaccProp.cpp
+++ b/c++/src/H5FaccProp.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 using std::cerr;
@@ -697,6 +693,52 @@ FileAccPropList::getGcReferences() const
 }
 
 //--------------------------------------------------------------------------
+// Function:    FileAccPropList::setFileLocking
+///\brief       Sets file locking flags.
+///\param       use_file_locking - IN: Flag that determines if file locks should
+//                  be used or not.
+///\param       ignore_when_disabled - IN: Flag that determines if file locks
+//                  should be be used when disabled on the file system or not.
+///\exception   H5::PropListIException
+///\par Description
+///             For information, please refer to the H5Pset_file_locking API in
+///             the HDF5 C Reference Manual.
+// Programmer   Dana Robinson - 2020
+//--------------------------------------------------------------------------
+void
+FileAccPropList::setFileLocking(hbool_t use_file_locking, hbool_t ignore_when_disabled) const
+{
+    herr_t ret_value = H5Pset_file_locking(id, use_file_locking, ignore_when_disabled);
+
+    if (ret_value < 0) {
+        throw PropListIException("FileAccPropList::setFileLocking", "H5Pset_file_locking failed");
+    }
+}
+
+//--------------------------------------------------------------------------
+// Function:    FileAccPropList::getFileLocking
+///\brief       Gets file locking flags.
+///\param       use_file_locking - OUT: Flag that determines if file locks
+//                  should be used or not.
+///\param       ignore_when_disabled - OUT: Flag that determines if file locks
+//                  should be be used when disabled on the file system or not.
+///\exception   H5::PropListIException
+///\par Description
+///             For information, please refer to the H5Pget_file_locking API in
+///             the HDF5 C Reference Manual.
+// Programmer   Dana Robinson - 2020
+//--------------------------------------------------------------------------
+void
+FileAccPropList::getFileLocking(hbool_t &use_file_locking, hbool_t &ignore_when_disabled) const
+{
+    herr_t ret_value = H5Pget_file_locking(id, &use_file_locking, &ignore_when_disabled);
+
+    if (ret_value < 0) {
+        throw PropListIException("FileAccPropList::getFileLocking", "H5Pget_file_locking failed");
+    }
+}
+
+//--------------------------------------------------------------------------
 // Function:    FileAccPropList::setLibverBounds
 ///\brief       Sets bounds on versions of library format to be used when creating
 ///             or writing objects.
diff --git a/c++/src/H5FaccProp.h b/c++/src/H5FaccProp.h
index d1a5051..998f870 100644
--- a/c++/src/H5FaccProp.h
+++ b/c++/src/H5FaccProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5FileAccPropList_H
-#define __H5FileAccPropList_H
+#ifndef H5FileAccPropList_H
+#define H5FileAccPropList_H
 
 namespace H5 {
 
@@ -122,6 +122,12 @@ class H5_DLLCPP FileAccPropList : public PropList {
     // Returns garbage collecting references setting.
     unsigned getGcReferences() const;
 
+    // Sets file locking parameters.
+    void setFileLocking(hbool_t use_file_locking, hbool_t ignore_when_disabled) const;
+
+    // Gets file locking parameters.
+    void getFileLocking(hbool_t &use_file_locking, hbool_t &ignore_when_disabled) const;
+
     // Sets bounds on versions of library format to be used when creating
     // or writing objects.
     void setLibverBounds(H5F_libver_t libver_low, H5F_libver_t libver_high) const;
@@ -162,4 +168,4 @@ class H5_DLLCPP FileAccPropList : public PropList {
 }; // end of FileAccPropList
 } // namespace H5
 
-#endif // __H5FileAccPropList_H
+#endif // H5FileAccPropList_H
diff --git a/c++/src/H5FcreatProp.cpp b/c++/src/H5FcreatProp.cpp
index ccc9251..b9be563 100644
--- a/c++/src/H5FcreatProp.cpp
+++ b/c++/src/H5FcreatProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5FcreatProp.h b/c++/src/H5FcreatProp.h
index d19b60d..00ae0b1 100644
--- a/c++/src/H5FcreatProp.h
+++ b/c++/src/H5FcreatProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5FileCreatPropList_H
-#define __H5FileCreatPropList_H
+#ifndef H5FileCreatPropList_H
+#define H5FileCreatPropList_H
 
 namespace H5 {
 
@@ -109,4 +109,4 @@ class H5_DLLCPP FileCreatPropList : public PropList {
 }; // end of FileCreatPropList
 } // namespace H5
 
-#endif // __H5FileCreatPropList_H
+#endif // H5FileCreatPropList_H
diff --git a/c++/src/H5File.cpp b/c++/src/H5File.cpp
index 677c3e6..9a6f191 100644
--- a/c++/src/H5File.cpp
+++ b/c++/src/H5File.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5Include.h"
@@ -184,7 +180,7 @@ H5File::H5File(hid_t existing_id) : Group()
 ///\param       original - IN: H5File instance to copy
 // December 2000
 //--------------------------------------------------------------------------
-H5File::H5File(const H5File &original) : Group()
+H5File::H5File(const H5File &original) : Group(original)
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
diff --git a/c++/src/H5File.h b/c++/src/H5File.h
index 9231d5f..6126eec 100644
--- a/c++/src/H5File.h
+++ b/c++/src/H5File.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5File_H
-#define __H5File_H
+#ifndef H5File_H
+#define H5File_H
 
 namespace H5 {
 
@@ -39,7 +39,7 @@ class H5_DLLCPP H5File : public Group {
                   const FileAccPropList &access_plist = FileAccPropList::DEFAULT);
 
     // Close this file.
-    virtual void close();
+    virtual void close() H5_OVERRIDE;
 
     // Gets a copy of the access property list of this file.
     FileAccPropList getAccessPlist() const;
@@ -96,16 +96,16 @@ class H5_DLLCPP H5File : public Group {
 
     ///\brief Returns this class name.
     virtual H5std_string
-    fromClass() const
+    fromClass() const H5_OVERRIDE
     {
         return ("H5File");
     }
 
     // Throw file exception.
-    virtual void throwException(const H5std_string &func_name, const H5std_string &msg) const;
+    virtual void throwException(const H5std_string &func_name, const H5std_string &msg) const H5_OVERRIDE;
 
     // For CommonFG to get the file id.
-    virtual hid_t getLocId() const;
+    virtual hid_t getLocId() const H5_OVERRIDE;
 
     // Default constructor
     H5File();
@@ -114,7 +114,7 @@ class H5_DLLCPP H5File : public Group {
     H5File(const H5File &original);
 
     // Gets the HDF5 file id.
-    virtual hid_t getId() const;
+    virtual hid_t getId() const H5_OVERRIDE;
 
     // H5File destructor.
     virtual ~H5File();
@@ -122,7 +122,7 @@ class H5_DLLCPP H5File : public Group {
   protected:
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
     // Sets the HDF5 file id.
-    virtual void p_setId(const hid_t new_id);
+    virtual void p_setId(const hid_t new_id) H5_OVERRIDE;
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
   private:
@@ -136,4 +136,4 @@ class H5_DLLCPP H5File : public Group {
 }; // end of H5File
 } // namespace H5
 
-#endif // __H5File_H
+#endif // H5File_H
diff --git a/c++/src/H5FloatType.cpp b/c++/src/H5FloatType.cpp
index 3941f60..33f8377 100644
--- a/c++/src/H5FloatType.cpp
+++ b/c++/src/H5FloatType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5FloatType.h b/c++/src/H5FloatType.h
index 2368113..c76be95 100644
--- a/c++/src/H5FloatType.h
+++ b/c++/src/H5FloatType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5FloatType_H
-#define __H5FloatType_H
+#ifndef H5FloatType_H
+#define H5FloatType_H
 
 namespace H5 {
 
@@ -84,4 +84,4 @@ class H5_DLLCPP FloatType : public AtomType {
 }; // end of FloatType
 } // namespace H5
 
-#endif // __H5FloatType_H
+#endif // H5FloatType_H
diff --git a/c++/src/H5Group.cpp b/c++/src/H5Group.cpp
index f30f03b..fe791da 100644
--- a/c++/src/H5Group.cpp
+++ b/c++/src/H5Group.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 #include <string>
 
 #include "H5Include.h"
diff --git a/c++/src/H5Group.h b/c++/src/H5Group.h
index 7b9dc54..b5f7e51 100644
--- a/c++/src/H5Group.h
+++ b/c++/src/H5Group.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __Group_H
-#define __Group_H
+#ifndef H5Group_H
+#define H5Group_H
 
 namespace H5 {
 
@@ -24,20 +24,20 @@ namespace H5 {
 class H5_DLLCPP Group : public H5Object, public CommonFG {
   public:
     // Close this group.
-    virtual void close();
+    virtual void close() H5_OVERRIDE;
 
     ///\brief Returns this class name.
     virtual H5std_string
-    fromClass() const
+    fromClass() const H5_OVERRIDE
     {
         return ("Group");
     }
 
     // Throw group exception.
-    virtual void throwException(const H5std_string &func_name, const H5std_string &msg) const;
+    virtual void throwException(const H5std_string &func_name, const H5std_string &msg) const H5_OVERRIDE;
 
     // for CommonFG to get the file id.
-    virtual hid_t getLocId() const;
+    virtual hid_t getLocId() const H5_OVERRIDE;
 
     // Creates a group by way of dereference.
     Group(const H5Location &loc, const void *ref, H5R_type_t ref_type = H5R_OBJECT,
@@ -63,10 +63,10 @@ class H5_DLLCPP Group : public H5Object, public CommonFG {
     Group(const Group &original);
 
     // Gets the group id.
-    virtual hid_t getId() const;
+    virtual hid_t getId() const H5_OVERRIDE;
 
     // Destructor
-    virtual ~Group();
+    virtual ~Group() H5_OVERRIDE;
 
     // Creates a copy of an existing group using its id.
     Group(const hid_t group_id);
@@ -74,7 +74,7 @@ class H5_DLLCPP Group : public H5Object, public CommonFG {
   protected:
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
     // Sets the group id.
-    virtual void p_setId(const hid_t new_id);
+    virtual void p_setId(const hid_t new_id) H5_OVERRIDE;
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
   private:
@@ -83,4 +83,4 @@ class H5_DLLCPP Group : public H5Object, public CommonFG {
 }; // end of Group
 } // namespace H5
 
-#endif // __Group_H
+#endif // H5Group_H
diff --git a/c++/src/H5IdComponent.cpp b/c++/src/H5IdComponent.cpp
index 485b860..18bcbd3 100644
--- a/c++/src/H5IdComponent.cpp
+++ b/c++/src/H5IdComponent.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5IdComponent.h b/c++/src/H5IdComponent.h
index 8db1af2..383d42d 100644
--- a/c++/src/H5IdComponent.h
+++ b/c++/src/H5IdComponent.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __IdComponent_H
-#define __IdComponent_H
+#ifndef H5IdComponent_H
+#define H5IdComponent_H
 
 namespace H5 {
 
@@ -113,4 +113,4 @@ class H5_DLLCPP IdComponent {
 }; // end class IdComponent
 } // namespace H5
 
-#endif // __IdComponent_H
+#endif // H5IdComponent_H
diff --git a/c++/src/H5Include.h b/c++/src/H5Include.h
index c26ba33..0dc930d 100644
--- a/c++/src/H5Include.h
+++ b/c++/src/H5Include.h
@@ -7,26 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include <hdf5.h>
 
-// Define bool type for platforms that don't support bool yet
-#ifdef BOOL_NOTDEFINED
-#ifdef false
-#undef false
-#endif
-#ifdef true
-#undef true
-#endif
-typedef int bool;
-const bool false = 0;
-const bool true  = 1;
-#endif
-
 // These are defined in H5Opkg.h, which should not be included in the C++ API,
 // so re-define them here for now.
 
@@ -37,3 +24,10 @@ const bool true  = 1;
  *      magic number as prefix and checksum as suffix for all chunks.
  */
 #define H5O_VERSION_2 2
+
+// Define H5_OVERRIDE to override for C++11.
+#if defined(__cplusplus) && (201103L <= __cplusplus)
+#define H5_OVERRIDE override
+#else
+#define H5_OVERRIDE
+#endif
diff --git a/c++/src/H5IntType.cpp b/c++/src/H5IntType.cpp
index 00eea5e..27c4491 100644
--- a/c++/src/H5IntType.cpp
+++ b/c++/src/H5IntType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5IntType.h b/c++/src/H5IntType.h
index e8bccca..185c8f0 100644
--- a/c++/src/H5IntType.h
+++ b/c++/src/H5IntType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5IntType_H
-#define __H5IntType_H
+#ifndef H5IntType_H
+#define H5IntType_H
 
 namespace H5 {
 
@@ -66,4 +66,4 @@ class H5_DLLCPP IntType : public AtomType {
 }; // end of IntType
 } // namespace H5
 
-#endif // __H5IntType_H
+#endif // H5IntType_H
diff --git a/c++/src/H5LaccProp.cpp b/c++/src/H5LaccProp.cpp
index bd6c26b..feaa555 100644
--- a/c++/src/H5LaccProp.cpp
+++ b/c++/src/H5LaccProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5LaccProp.h b/c++/src/H5LaccProp.h
index 337f0b7..4fa516c 100644
--- a/c++/src/H5LaccProp.h
+++ b/c++/src/H5LaccProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5LinkAccPropList_H
-#define __H5LinkAccPropList_H
+#ifndef H5LinkAccPropList_H
+#define H5LinkAccPropList_H
 
 namespace H5 {
 
@@ -70,4 +70,4 @@ class H5_DLLCPP LinkAccPropList : public PropList {
 }; // end of LinkAccPropList
 } // namespace H5
 
-#endif // __H5LinkAccPropList_H
+#endif // H5LinkAccPropList_H
diff --git a/c++/src/H5LcreatProp.cpp b/c++/src/H5LcreatProp.cpp
index 7bcdd2b..29721c1 100644
--- a/c++/src/H5LcreatProp.cpp
+++ b/c++/src/H5LcreatProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5LcreatProp.h b/c++/src/H5LcreatProp.h
index 7194bdc..aea38e7 100644
--- a/c++/src/H5LcreatProp.h
+++ b/c++/src/H5LcreatProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5LinkCreatPropList_H
-#define __H5LinkCreatPropList_H
+#ifndef H5LinkCreatPropList_H
+#define H5LinkCreatPropList_H
 
 namespace H5 {
 
@@ -77,4 +77,4 @@ class H5_DLLCPP LinkCreatPropList : public PropList {
 }; // end of LinkCreatPropList
 } // namespace H5
 
-#endif // __H5LinkCreatPropList_H
+#endif // H5LinkCreatPropList_H
diff --git a/c++/src/H5Library.cpp b/c++/src/H5Library.cpp
index f64bce4..37516be 100644
--- a/c++/src/H5Library.cpp
+++ b/c++/src/H5Library.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5Library.h b/c++/src/H5Library.h
index d3f2831..3df8d56 100644
--- a/c++/src/H5Library.h
+++ b/c++/src/H5Library.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Library_H
-#define __H5Library_H
+#ifndef H5Library_H
+#define H5Library_H
 
 namespace H5 {
 
@@ -69,4 +69,4 @@ class H5_DLLCPP H5Library {
 }; // end of H5Library
 } // namespace H5
 
-#endif // __H5Library_H
+#endif // H5Library_H
diff --git a/c++/src/H5Location.cpp b/c++/src/H5Location.cpp
index ba498d9..065de0c 100644
--- a/c++/src/H5Location.cpp
+++ b/c++/src/H5Location.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -348,7 +348,7 @@ H5Location::getComment(const char *name, size_t buf_size) const
 {
     // Initialize string to "", so that if there is no comment, the returned
     // string will be empty
-    H5std_string comment("");
+    H5std_string comment;
 
     // Preliminary call to get the comment's length
     ssize_t comment_len = H5Oget_comment_by_name(getId(), name, NULL, (size_t)0, H5P_DEFAULT);
@@ -400,6 +400,7 @@ H5Location::getComment(const H5std_string &name, size_t buf_size) const
 {
     return (getComment(name.c_str(), buf_size));
 }
+
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 
 //--------------------------------------------------------------------------
@@ -648,6 +649,7 @@ H5Location::p_get_obj_type(void *ref, H5R_type_t ref_type) const
     return (obj_type);
 }
 #endif // DOXYGEN_SHOULD_SKIP_THIS
+
 #endif /* H5_NO_DEPRECATED_SYMBOLS */
 
 //--------------------------------------------------------------------------
@@ -706,6 +708,7 @@ H5Location::p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const
     }
     return (obj_type);
 }
+#endif // DOXYGEN_SHOULD_SKIP_THIS
 
 //--------------------------------------------------------------------------
 // Function:    H5Location::getRegion
@@ -1818,7 +1821,7 @@ H5Location::getLinkval(const char *name, size_t size) const
     H5L_info2_t  linkinfo;
     char *       value_C; // value in C string
     size_t       val_size = size;
-    H5std_string value    = "";
+    H5std_string value;
     herr_t       ret_value;
 
     // if user doesn't provide buffer size, determine it
@@ -2155,6 +2158,7 @@ H5Location::childObjType(const char *objname) const
                 break;
             case H5O_TYPE_UNKNOWN:
             case H5O_TYPE_NTYPES:
+            case H5O_TYPE_MAP:
             default:
                 throwException("childObjType", "Unknown type of object");
         }
@@ -2233,6 +2237,7 @@ H5Location::childObjType(hsize_t index, H5_index_t index_type, H5_iter_order_t o
                 break;
             case H5O_TYPE_UNKNOWN:
             case H5O_TYPE_NTYPES:
+            case H5O_TYPE_MAP:
             default:
                 throwException("childObjType", "Unknown type of object");
         }
@@ -2294,7 +2299,6 @@ H5Location::childObjVersion(const H5std_string &objname) const
 }
 
 #ifndef H5_NO_DEPRECATED_SYMBOLS
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
 //--------------------------------------------------------------------------
 // Function:    H5Location::getObjTypeByIdx
 ///\brief       Returns the type of an object in this group, given the
@@ -2372,7 +2376,6 @@ H5Location::getObjTypeByIdx(hsize_t idx, H5std_string &type_name) const
     return (obj_type);
 }
 
-#endif // DOXYGEN_SHOULD_SKIP_THIS
 #endif /* H5_NO_DEPRECATED_SYMBOLS */
 
 //--------------------------------------------------------------------------
@@ -2435,6 +2438,4 @@ H5Location::~H5Location()
 {
 }
 
-#endif // DOXYGEN_SHOULD_SKIP_THIS
-
 } // namespace H5
diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h
index 3ea58cd..740d0ce 100644
--- a/c++/src/H5Location.h
+++ b/c++/src/H5Location.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Location_H
-#define __H5Location_H
+#ifndef H5Location_H
+#define H5Location_H
 
 #include "H5Classes.h" // constains forward class declarations
 
@@ -339,4 +339,4 @@ class H5_DLLCPP H5Location : public IdComponent {
 }; // end of H5Location
 } // namespace H5
 
-#endif // __H5Location_H
+#endif // H5Location_H
diff --git a/c++/src/H5Object.cpp b/c++/src/H5Object.cpp
index 9fd750a..71109d3 100644
--- a/c++/src/H5Object.cpp
+++ b/c++/src/H5Object.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -42,8 +42,11 @@ namespace H5 {
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 // userAttrOpWrpr interfaces between the user's function and the
 // C library function H5Aiterate2
-extern "C" herr_t
-userAttrOpWrpr(hid_t loc_id, const char *attr_name, const H5A_info_t *ainfo, void *op_data)
+extern "C" {
+
+static herr_t
+userAttrOpWrpr(H5_ATTR_UNUSED hid_t loc_id, const char *attr_name, H5_ATTR_UNUSED const H5A_info_t *ainfo,
+               void *op_data)
 {
     H5std_string       s_attr_name = H5std_string(attr_name);
     UserData4Aiterate *myData      = reinterpret_cast<UserData4Aiterate *>(op_data);
@@ -53,8 +56,9 @@ userAttrOpWrpr(hid_t loc_id, const char *attr_name, const H5A_info_t *ainfo, voi
 
 // userVisitOpWrpr interfaces between the user's function and the
 // C library function H5Ovisit3
-extern "C" herr_t
-userVisitOpWrpr(hid_t obj_id, const char *attr_name, const H5O_info2_t *obj_info, void *op_data)
+static herr_t
+userVisitOpWrpr(H5_ATTR_UNUSED hid_t obj_id, const char *attr_name, const H5O_info2_t *obj_info,
+                void *op_data)
 {
     H5std_string    s_attr_name = H5std_string(attr_name);
     UserData4Visit *myData      = reinterpret_cast<UserData4Visit *>(op_data);
@@ -62,6 +66,8 @@ userVisitOpWrpr(hid_t obj_id, const char *attr_name, const H5O_info2_t *obj_info
     return status;
 }
 
+} // extern "C"
+
 //--------------------------------------------------------------------------
 // Function:    H5Object default constructor (protected)
 // Programmer   Binh-Minh Ribler - 2000
@@ -473,7 +479,7 @@ H5Object::getObjName(char *obj_name, size_t buf_size) const
 H5std_string
 H5Object::getObjName() const
 {
-    H5std_string obj_name(""); // object name to return
+    H5std_string obj_name; // object name to return
 
     // Preliminary call to get the size of the object name
     ssize_t name_size = H5Iget_name(getId(), NULL, static_cast<size_t>(0));
diff --git a/c++/src/H5Object.h b/c++/src/H5Object.h
index 104e2a5..bc2f14a 100644
--- a/c++/src/H5Object.h
+++ b/c++/src/H5Object.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5Object_H
-#define __H5Object_H
+#ifndef H5Object_H
+#define H5Object_H
 
 namespace H5 {
 
@@ -106,7 +106,7 @@ class H5_DLLCPP H5Object : public H5Location {
     void removeAttr(const H5std_string &name) const;
 
     // Returns an identifier.
-    virtual hid_t getId() const = 0;
+    virtual hid_t getId() const H5_OVERRIDE = 0;
 
     // Gets the name of this HDF5 object, i.e., Group, DataSet, or
     // DataType.
@@ -122,14 +122,14 @@ class H5_DLLCPP H5Object : public H5Location {
 
     // Sets the identifier of this object to a new value. - this one
     // doesn't increment reference count
-    virtual void p_setId(const hid_t new_id) = 0;
+    virtual void p_setId(const hid_t new_id) H5_OVERRIDE = 0;
 
     // Noop destructor.
-    virtual ~H5Object();
+    virtual ~H5Object() H5_OVERRIDE;
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 }; // end of H5Object
 } // namespace H5
 
-#endif // __H5Object_H
+#endif // H5Object_H
diff --git a/c++/src/H5OcreatProp.cpp b/c++/src/H5OcreatProp.cpp
index 20e781a..81dae31 100644
--- a/c++/src/H5OcreatProp.cpp
+++ b/c++/src/H5OcreatProp.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5OcreatProp.h b/c++/src/H5OcreatProp.h
index ffafd44..7f6d411 100644
--- a/c++/src/H5OcreatProp.h
+++ b/c++/src/H5OcreatProp.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5ObjCreatPropList_H
-#define __H5ObjCreatPropList_H
+#ifndef H5ObjCreatPropList_H
+#define H5ObjCreatPropList_H
 
 namespace H5 {
 
@@ -75,4 +75,4 @@ class H5_DLLCPP ObjCreatPropList : public PropList {
 }; // end of ObjCreatPropList
 } // namespace H5
 
-#endif // __H5ObjCreatPropList_H
+#endif // H5ObjCreatPropList_H
diff --git a/c++/src/H5PredType.cpp b/c++/src/H5PredType.cpp
index 5943a1b..9e67968 100644
--- a/c++/src/H5PredType.cpp
+++ b/c++/src/H5PredType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -27,6 +27,7 @@
 #include "H5DataType.h"
 #include "H5AtomType.h"
 #include "H5PredType.h"
+#include "H5private.h"
 
 namespace H5 {
 
@@ -89,7 +90,7 @@ PredType::operator=(const PredType &rhs)
 // These dummy functions do not inherit from DataType - they'll
 // throw an DataTypeIException if invoked.
 void
-PredType::commit(H5Location &loc, const char *name)
+PredType::commit(H5_ATTR_UNUSED H5Location &loc, H5_ATTR_UNUSED const char *name)
 {
     throw DataTypeIException("PredType::commit",
                              "Error: Attempted to commit a predefined datatype.  Invalid operation!");
diff --git a/c++/src/H5PredType.h b/c++/src/H5PredType.h
index 2d1185b..b40d2b3 100644
--- a/c++/src/H5PredType.h
+++ b/c++/src/H5PredType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5PredType_H
-#define __H5PredType_H
+#ifndef H5PredType_H
+#define H5PredType_H
 
 namespace H5 {
 
@@ -435,11 +435,11 @@ class H5_DLLCPP PredType : public AtomType {
 #if H5_SIZEOF_UINT_FAST64_T != 0
     static PredType *NATIVE_UINT_FAST64_;
 #endif /* H5_SIZEOF_UINT_FAST64_T */
-       // End of Declaration of pointers
+    // End of Declaration of pointers
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 }; // end of PredType
 } // namespace H5
 
-#endif // __H5PredType_H
+#endif // H5PredType_H
diff --git a/c++/src/H5PropList.cpp b/c++/src/H5PropList.cpp
index 7d6447b..fda4114 100644
--- a/c++/src/H5PropList.cpp
+++ b/c++/src/H5PropList.cpp
@@ -6,16 +6,12 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 
 #include <string>
 
@@ -157,6 +153,8 @@ PropList::PropList(const hid_t plist_id) : IdComponent()
         case H5I_ERROR_STACK:
         case H5I_NTYPES:
         case H5I_UNINIT:
+        case H5I_MAP:
+        case H5I_SPACE_SEL_ITER:
         default:
             id = H5P_DEFAULT;
             break;
diff --git a/c++/src/H5PropList.h b/c++/src/H5PropList.h
index 805f6da..12c8b4b 100644
--- a/c++/src/H5PropList.h
+++ b/c++/src/H5PropList.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5PropList_H
-#define __H5PropList_H
+#ifndef H5PropList_H
+#define H5PropList_H
 
 namespace H5 {
 
@@ -144,4 +144,4 @@ class H5_DLLCPP PropList : public IdComponent {
 }; // end of PropList
 } // namespace H5
 
-#endif // __H5PropList_H
+#endif // H5PropList_H
diff --git a/c++/src/H5StrType.cpp b/c++/src/H5StrType.cpp
index 5dcf4a6..5df48f3 100644
--- a/c++/src/H5StrType.cpp
+++ b/c++/src/H5StrType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -32,6 +32,7 @@
 #include "H5StrType.h"
 #include "H5DataSet.h"
 #include "H5PredType.h"
+#include "H5private.h"
 
 namespace H5 {
 
@@ -104,7 +105,7 @@ StrType::StrType(const PredType &pred_type, const size_t &size) : AtomType()
 //              This constructor replaced the previous one.
 // Programmer   Binh-Minh Ribler - Nov 28, 2005
 //--------------------------------------------------------------------------
-StrType::StrType(const int dummy, const size_t &size) : AtomType()
+StrType::StrType(H5_ATTR_UNUSED const int dummy, const size_t &size) : AtomType()
 {
     // use DataType::copy to make a copy of the string predefined type
     // then set its length
diff --git a/c++/src/H5StrType.h b/c++/src/H5StrType.h
index d442bc4..d272c53 100644
--- a/c++/src/H5StrType.h
+++ b/c++/src/H5StrType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5StrType_H
-#define __H5StrType_H
+#ifndef H5StrType_H
+#define H5StrType_H
 
 namespace H5 {
 
@@ -78,4 +78,4 @@ class H5_DLLCPP StrType : public AtomType {
 }; // end of StrType
 } // namespace H5
 
-#endif // __H5StrType_H
+#endif // H5StrType_H
diff --git a/c++/src/H5VarLenType.cpp b/c++/src/H5VarLenType.cpp
index 13d1a5f..0270feb 100644
--- a/c++/src/H5VarLenType.cpp
+++ b/c++/src/H5VarLenType.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/src/H5VarLenType.h b/c++/src/H5VarLenType.h
index 56c699b..f767e0e 100644
--- a/c++/src/H5VarLenType.h
+++ b/c++/src/H5VarLenType.h
@@ -7,13 +7,13 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-#ifndef __H5VarLenType_H
-#define __H5VarLenType_H
+#ifndef H5VarLenType_H
+#define H5VarLenType_H
 
 namespace H5 {
 
@@ -61,4 +61,4 @@ class H5_DLLCPP VarLenType : public DataType {
 }; // end of VarLenType
 } // namespace H5
 
-#endif // __H5VarLenType_H
+#endif // H5VarLenType_H
diff --git a/c++/src/Makefile.am b/c++/src/Makefile.am
index eb50209..74ef367 100644
--- a/c++/src/Makefile.am
+++ b/c++/src/Makefile.am
@@ -6,7 +6,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 ##
diff --git a/c++/src/Makefile.in b/c++/src/Makefile.in
index f59bb02..4e42c0f 100644
--- a/c++/src/Makefile.in
+++ b/c++/src/Makefile.in
@@ -22,7 +22,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -116,6 +116,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/aclocal_cxx.m4 \
 	$(top_srcdir)/m4/ax_check_junit.m4 \
 	$(top_srcdir)/m4/ax_java_options.m4 \
 	$(top_srcdir)/m4/ax_jni_include_dir.m4 \
+	$(top_srcdir)/m4/ax_prog_doxygen.m4 \
 	$(top_srcdir)/m4/ax_prog_jar.m4 \
 	$(top_srcdir)/m4/ax_prog_java.m4 \
 	$(top_srcdir)/m4/ax_prog_java_works.m4 \
@@ -430,7 +431,7 @@ AMTAR = @AMTAR@
 
 # H5_CFLAGS holds flags that should be used when building hdf5,
 # but which should not be exported to h5cc for building other programs.
-# AM_CFLAGS is an automake construct which should be used by Makefiles 
+# AM_CFLAGS is an automake construct which should be used by Makefiles
 # instead of CFLAGS, as CFLAGS is reserved solely for the user to define.
 # This applies to FCFLAGS, CXXFLAGS, CPPFLAGS, and LDFLAGS as well.
 AM_CFLAGS = @AM_CFLAGS@ @H5_CFLAGS@
@@ -457,6 +458,7 @@ CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CC_VERSION = @CC_VERSION@
 CFLAGS = @CFLAGS@
+CLANG_SANITIZE_CHECKS = @CLANG_SANITIZE_CHECKS@
 CODESTACK = @CODESTACK@
 CONFIG_DATE = @CONFIG_DATE@
 CONFIG_MODE = @CONFIG_MODE@
@@ -473,11 +475,54 @@ DEFAULT_API_VERSION = @DEFAULT_API_VERSION@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DEPRECATED_SYMBOLS = @DEPRECATED_SYMBOLS@
-DEV_WARNINGS = @DEV_WARNINGS@
+DESIRED_FILE_LOCKING = @DESIRED_FILE_LOCKING@
+DIAGS = @DIAGS@
 DIRECT_VFD = @DIRECT_VFD@
 DLLTOOL = @DLLTOOL@
+DOXYGEN_EXAMPLES_DIRECTORY = @DOXYGEN_EXAMPLES_DIRECTORY@
+DOXYGEN_EXTERNAL_SEARCH = @DOXYGEN_EXTERNAL_SEARCH@
+DOXYGEN_HTML_EXTRA_FILES = @DOXYGEN_HTML_EXTRA_FILES@
+DOXYGEN_HTML_EXTRA_STYLESHEET = @DOXYGEN_HTML_EXTRA_STYLESHEET@
+DOXYGEN_HTML_FOOTER = @DOXYGEN_HTML_FOOTER@
+DOXYGEN_HTML_HEADER = @DOXYGEN_HTML_HEADER@
+DOXYGEN_INCLUDE_ALIASES = @DOXYGEN_INCLUDE_ALIASES@
+DOXYGEN_INPUT_DIRECTORY = @DOXYGEN_INPUT_DIRECTORY@
+DOXYGEN_LAYOUT_FILE = @DOXYGEN_LAYOUT_FILE@
+DOXYGEN_MACRO_EXPANSION = @DOXYGEN_MACRO_EXPANSION@
+DOXYGEN_OPTIMIZE_OUTPUT_FOR_C = @DOXYGEN_OPTIMIZE_OUTPUT_FOR_C@
+DOXYGEN_OUTPUT_DIRECTORY = @DOXYGEN_OUTPUT_DIRECTORY@
+DOXYGEN_PACKAGE = @DOXYGEN_PACKAGE@
+DOXYGEN_PAPER_SIZE = @DOXYGEN_PAPER_SIZE@
+DOXYGEN_PROJECT_BRIEF = @DOXYGEN_PROJECT_BRIEF@
+DOXYGEN_PROJECT_LOGO = @DOXYGEN_PROJECT_LOGO@
+DOXYGEN_SEARCHENGINE_URL = @DOXYGEN_SEARCHENGINE_URL@
+DOXYGEN_SERVER_BASED_SEARCH = @DOXYGEN_SERVER_BASED_SEARCH@
+DOXYGEN_VERSION_STRING = @DOXYGEN_VERSION_STRING@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+DX_CONFIG = @DX_CONFIG@
+DX_DOCDIR = @DX_DOCDIR@
+DX_DOT = @DX_DOT@
+DX_DOXYGEN = @DX_DOXYGEN@
+DX_DVIPS = @DX_DVIPS@
+DX_EGREP = @DX_EGREP@
+DX_ENV = @DX_ENV@
+DX_FLAG_chi = @DX_FLAG_chi@
+DX_FLAG_chm = @DX_FLAG_chm@
+DX_FLAG_doc = @DX_FLAG_doc@
+DX_FLAG_dot = @DX_FLAG_dot@
+DX_FLAG_html = @DX_FLAG_html@
+DX_FLAG_man = @DX_FLAG_man@
+DX_FLAG_pdf = @DX_FLAG_pdf@
+DX_FLAG_ps = @DX_FLAG_ps@
+DX_FLAG_rtf = @DX_FLAG_rtf@
+DX_FLAG_xml = @DX_FLAG_xml@
+DX_HHC = @DX_HHC@
+DX_LATEX = @DX_LATEX@
+DX_MAKEINDEX = @DX_MAKEINDEX@
+DX_PDFLATEX = @DX_PDFLATEX@
+DX_PERL = @DX_PERL@
+DX_PROJECT = @DX_PROJECT@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
@@ -511,6 +556,7 @@ H5_CPPFLAGS = @H5_CPPFLAGS@
 H5_CXXFLAGS = @H5_CXXFLAGS@
 H5_FCFLAGS = @H5_FCFLAGS@
 H5_FORTRAN_SHARED = @H5_FORTRAN_SHARED@
+H5_IS_DARWIN = @H5_IS_DARWIN@
 H5_JAVACFLAGS = @H5_JAVACFLAGS@
 H5_JAVAFLAGS = @H5_JAVAFLAGS@
 H5_JNIFLAGS = @H5_JNIFLAGS@
@@ -521,6 +567,7 @@ HAVE_DMALLOC = @HAVE_DMALLOC@
 HAVE_Fortran_INTEGER_SIZEOF_16 = @HAVE_Fortran_INTEGER_SIZEOF_16@
 HAVE_LIBHDFS = @HAVE_LIBHDFS@
 HAVE_PTHREAD = @HAVE_PTHREAD@
+HDF5_DOXYGEN = @HDF5_DOXYGEN@
 HDF5_HL = @HDF5_HL@
 HDF5_INTERFACES = @HDF5_INTERFACES@
 HDF5_TESTS = @HDF5_TESTS@
@@ -533,6 +580,7 @@ HL = @HL@
 HL_FOR = @HL_FOR@
 HSIZE_T = @HSIZE_T@
 HSSIZE_T = @HSSIZE_T@
+IGNORE_DISABLED_FILE_LOCKS = @IGNORE_DISABLED_FILE_LOCKS@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -570,6 +618,7 @@ MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
 MAP_API = @MAP_API@
 MEMORYALLOCSANITYCHECK = @MEMORYALLOCSANITYCHECK@
+MIRROR_VFD = @MIRROR_VFD@
 MKDIR_P = @MKDIR_P@
 MPE = @MPE@
 NM = @NM@
@@ -606,6 +655,7 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PREADWRITE = @PREADWRITE@
 PROFILING = @PROFILING@
 RANLIB = @RANLIB@
+RECURSIVE_RW_LOCKS = @RECURSIVE_RW_LOCKS@
 ROOT = @ROOT@
 ROS3_VFD = @ROS3_VFD@
 RUNPARALLEL = @RUNPARALLEL@
@@ -629,6 +679,7 @@ TIME = @TIME@
 TR = @TR@
 TRACE_API = @TRACE_API@
 UNAME_INFO = @UNAME_INFO@
+USE_FILE_LOCKING = @USE_FILE_LOCKING@
 USE_FILTER_DEFLATE = @USE_FILTER_DEFLATE@
 USE_FILTER_SZIP = @USE_FILTER_SZIP@
 USINGMEMCHECKER = @USINGMEMCHECKER@
@@ -721,15 +772,15 @@ LIBH5_HL = $(top_builddir)/hl/src/libhdf5_hl.la
 LIBH5F_HL = $(top_builddir)/hl/fortran/src/libhdf5hl_fortran.la
 LIBH5CPP_HL = $(top_builddir)/hl/c++/src/libhdf5_hl_cpp.la
 
-# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below  
-# has been removed. According to the official description of DESTDIR by Gnu at 
-# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is 
-# prepended to the normal and complete install path that it precedes for the 
-# purpose of installing in a temporary directory which is useful for building 
-# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another 
-# '/' at the beginning of the normal install path.  When DESTDIR is empty the  
-# path then begins with '//', which is incorrect and causes problems at least for 
-# Cygwin.   
+# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below
+# has been removed. According to the official description of DESTDIR by Gnu at
+# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is
+# prepended to the normal and complete install path that it precedes for the
+# purpose of installing in a temporary directory which is useful for building
+# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another
+# '/' at the beginning of the normal install path.  When DESTDIR is empty the
+# path then begins with '//', which is incorrect and causes problems at least for
+# Cygwin.
 
 # Scripts used to build examples
 # If only shared libraries have been installed, have h5cc build examples with
@@ -754,30 +805,30 @@ CHECK_CLEANFILES = *.chkexe *.chklog *.clog *.clog2
 # See libtool versioning documentation online.
 # After making changes, run bin/reconfigure to update other configure related
 # files like Makefile.in.
-LT_VERS_INTERFACE = 200
-LT_VERS_AGE = 0
+LT_VERS_INTERFACE = 201
+LT_VERS_AGE = 1
 LT_VERS_REVISION = 0
-LT_CXX_VERS_INTERFACE = 200
+LT_CXX_VERS_INTERFACE = 201
 LT_CXX_VERS_REVISION = 0
-LT_CXX_VERS_AGE = 0
-LT_F_VERS_INTERFACE = 200
+LT_CXX_VERS_AGE = 1
+LT_F_VERS_INTERFACE = 201
 LT_F_VERS_REVISION = 0
-LT_F_VERS_AGE = 0
+LT_F_VERS_AGE = 1
 LT_HL_VERS_INTERFACE = 200
-LT_HL_VERS_REVISION = 0
+LT_HL_VERS_REVISION = 1
 LT_HL_VERS_AGE = 0
 LT_HL_CXX_VERS_INTERFACE = 200
-LT_HL_CXX_VERS_REVISION = 0
+LT_HL_CXX_VERS_REVISION = 1
 LT_HL_CXX_VERS_AGE = 0
 LT_HL_F_VERS_INTERFACE = 200
-LT_HL_F_VERS_REVISION = 0
+LT_HL_F_VERS_REVISION = 1
 LT_HL_F_VERS_AGE = 0
-LT_JAVA_VERS_INTERFACE = 200
+LT_JAVA_VERS_INTERFACE = 201
 LT_JAVA_VERS_REVISION = 0
-LT_JAVA_VERS_AGE = 0
-LT_TOOLS_VERS_INTERFACE = 200
+LT_JAVA_VERS_AGE = 1
+LT_TOOLS_VERS_INTERFACE = 201
 LT_TOOLS_VERS_REVISION = 0
-LT_TOOLS_VERS_AGE = 0
+LT_TOOLS_VERS_AGE = 1
 
 # This is our main target
 lib_LTLIBRARIES = libhdf5_cpp.la
@@ -834,7 +885,7 @@ LIB = $(lib_LIBRARIES) $(lib_LTLIBRARIES) $(noinst_LIBRARIES)                 \
 PROGS = $(bin_PROGRAMS) $(bin_SCRIPTS) $(noinst_PROGRAMS) $(noinst_SCRIPTS)   \
         $(EXTRA_PROG)
 
-chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST) 
+chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST)
 TEST_EXTENSIONS = .sh
 SH_LOG_COMPILER = $(SHELL)
 AM_SH_LOG_FLAGS = 
@@ -1411,9 +1462,9 @@ uninstall-am: uninstall-binSCRIPTS uninstall-includeHEADERS \
 # commands that should be executed even if a file with the same name already
 # exists.
 .PHONY: build-check-clean build-check-p build-check-s build-lib build-progs \
-        build-tests check-clean check-install check-p check-s check-vfd \
-        check-passthrough-vol install-doc lib progs tests uninstall-doc \
-        _exec_check-s _test help
+	build-tests check-clean check-install check-p check-s check-vfd \
+	check-passthrough-vol install-doc lib progs tests uninstall-doc \
+	_exec_check-s _test help trace doxygen
 
 help:
 	@$(top_srcdir)/bin/makehelp
diff --git a/c++/src/cpp_doc_config b/c++/src/cpp_doc_config
index 1c30292..f17652e 100644
--- a/c++/src/cpp_doc_config
+++ b/c++/src/cpp_doc_config
@@ -38,7 +38,7 @@ PROJECT_NAME           =
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "1.12.0"
+PROJECT_NUMBER         = "1.12.1"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/c++/src/h5c++.in b/c++/src/h5c++.in
index f068f51..cf993b9 100644
--- a/c++/src/h5c++.in
+++ b/c++/src/h5c++.in
@@ -7,7 +7,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -311,7 +311,7 @@ fi
 
 if test "x$do_link" = "xyes"; then
   shared_link=""
-  # conditionally link with the hl library  
+  # conditionally link with the hl library
   if test "X$HL" = "Xhl"; then
    libraries=" $libraries -lhdf5_hl_cpp -lhdf5_cpp -lhdf5_hl -lhdf5 "
   else
diff --git a/c++/src/header.html b/c++/src/header.html
index cb42565..5b92416 100644
--- a/c++/src/header.html
+++ b/c++/src/header.html
@@ -13,7 +13,7 @@ xmlns="http://www.w3.org/TR/REC-html40">
   * This file is part of HDF5.  The full HDF5 copyright notice, including     *
   * terms governing use, modification, and redistribution, is contained in    *
   * the COPYING file, which can be found at the root of the source code       *
-  * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+  * distribution tree, or in https://www.hdfgroup.org/licenses.               *
   * If you do not have access to either file, you may request a copy from     *
   * help@hdfgroup.org.                                                        *
   * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
diff --git a/c++/test/CMakeLists.txt b/c++/test/CMakeLists.txt
index 29534a7..1255e39 100644
--- a/c++/test/CMakeLists.txt
+++ b/c++/test/CMakeLists.txt
@@ -37,8 +37,9 @@ set (CPP_TEST_SOURCES
 set (srcdir ${CMAKE_CURRENT_SOURCE_DIR})
 configure_file (${HDF5_CPP_TEST_SOURCE_DIR}/H5srcdir_str.h.in H5srcdir_str.h  @ONLY)
 
-add_executable (cpp_testhdf5 ${CPP_TEST_SOURCES} )
-target_include_directories (cpp_testhdf5 PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+add_executable (cpp_testhdf5 ${CPP_TEST_SOURCES} ${HDF5_CPP_TEST_SOURCE_DIR}/h5cpputil.h)
+target_include_directories (cpp_testhdf5 PRIVATE "${HDF5_SRC_DIR};${HDF5_SRC_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+target_compile_options(cpp_testhdf5 PRIVATE "${HDF5_CMAKE_CXX_FLAGS}")
 target_compile_definitions(cpp_testhdf5
     PRIVATE $<$<BOOL:${HDF5_ENABLE_PARALLEL}>:MPICH_SKIP_MPICXX;MPICH_IGNORE_CXX_SEEK># Parallel/MPI, prevent spurious cpp/cxx warnings
 )
@@ -48,7 +49,7 @@ if (NOT BUILD_SHARED_LIBS)
 else ()
   TARGET_C_PROPERTIES (cpp_testhdf5 SHARED)
   target_link_libraries (cpp_testhdf5 PRIVATE ${HDF5_CPP_LIBSH_TARGET} ${HDF5_LIBSH_TARGET} ${HDF5_TEST_LIBSH_TARGET})
-  if (MINGW)
+  if (MINGW AND HDF5_MINGW_STATIC_GCC_LIBS)
     target_link_options (${HDF5_CPP_LIBSH_TARGET}
         PRIVATE -static-libgcc -static-libstdc++
     )
@@ -56,6 +57,13 @@ else ()
 endif ()
 set_target_properties (cpp_testhdf5 PROPERTIES FOLDER test/cpp)
 
+#-----------------------------------------------------------------------------
+# Add Target to clang-format
+#-----------------------------------------------------------------------------
+if (HDF5_ENABLE_FORMATTERS)
+  clang_format (HDF5_CPP_TEST_cpp_testhdf5_FORMAT cpp_testhdf5)
+endif ()
+
 if (HDF5_TEST_CPP AND HDF5_TEST_SERIAL)
   include (CMakeTests.cmake)
 endif ()
diff --git a/c++/test/CMakeTests.cmake b/c++/test/CMakeTests.cmake
index a25dc6b..2a0a6be 100644
--- a/c++/test/CMakeTests.cmake
+++ b/c++/test/CMakeTests.cmake
@@ -5,7 +5,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
diff --git a/c++/test/CMakeVFDTests.cmake b/c++/test/CMakeVFDTests.cmake
index fcae446..360d14e 100644
--- a/c++/test/CMakeVFDTests.cmake
+++ b/c++/test/CMakeVFDTests.cmake
@@ -5,7 +5,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -26,7 +26,7 @@ set (VFD_LIST
     family
 )
 
-if (DIRECT_VFD)
+if (H5_HAVE_DIRECT)
   set (VFD_LIST ${VFD_LIST} direct)
 endif ()
 
diff --git a/c++/test/H5srcdir_str.h.in b/c++/test/H5srcdir_str.h.in
index bab1df3..988c065 100644
--- a/c++/test/H5srcdir_str.h.in
+++ b/c++/test/H5srcdir_str.h.in
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
diff --git a/c++/test/Makefile.am b/c++/test/Makefile.am
index 0fc17fc..0194b0e 100644
--- a/c++/test/Makefile.am
+++ b/c++/test/Makefile.am
@@ -6,7 +6,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 ##
diff --git a/c++/test/Makefile.in b/c++/test/Makefile.in
index 0f79807..7d0e712 100644
--- a/c++/test/Makefile.in
+++ b/c++/test/Makefile.in
@@ -22,7 +22,7 @@
 # This file is part of HDF5.  The full HDF5 copyright notice, including
 # terms governing use, modification, and redistribution, is contained in
 # the COPYING file, which can be found at the root of the source code
-# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
+# distribution tree, or in https://www.hdfgroup.org/licenses.
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
@@ -114,6 +114,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/aclocal_cxx.m4 \
 	$(top_srcdir)/m4/ax_check_junit.m4 \
 	$(top_srcdir)/m4/ax_java_options.m4 \
 	$(top_srcdir)/m4/ax_jni_include_dir.m4 \
+	$(top_srcdir)/m4/ax_prog_doxygen.m4 \
 	$(top_srcdir)/m4/ax_prog_jar.m4 \
 	$(top_srcdir)/m4/ax_prog_java.m4 \
 	$(top_srcdir)/m4/ax_prog_java_works.m4 \
@@ -419,7 +420,7 @@ AMTAR = @AMTAR@
 
 # H5_CFLAGS holds flags that should be used when building hdf5,
 # but which should not be exported to h5cc for building other programs.
-# AM_CFLAGS is an automake construct which should be used by Makefiles 
+# AM_CFLAGS is an automake construct which should be used by Makefiles
 # instead of CFLAGS, as CFLAGS is reserved solely for the user to define.
 # This applies to FCFLAGS, CXXFLAGS, CPPFLAGS, and LDFLAGS as well.
 AM_CFLAGS = @AM_CFLAGS@ @H5_CFLAGS@
@@ -447,6 +448,7 @@ CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CC_VERSION = @CC_VERSION@
 CFLAGS = @CFLAGS@
+CLANG_SANITIZE_CHECKS = @CLANG_SANITIZE_CHECKS@
 CODESTACK = @CODESTACK@
 CONFIG_DATE = @CONFIG_DATE@
 CONFIG_MODE = @CONFIG_MODE@
@@ -463,11 +465,54 @@ DEFAULT_API_VERSION = @DEFAULT_API_VERSION@
 DEFS = @DEFS@
 DEPDIR = @DEPDIR@
 DEPRECATED_SYMBOLS = @DEPRECATED_SYMBOLS@
-DEV_WARNINGS = @DEV_WARNINGS@
+DESIRED_FILE_LOCKING = @DESIRED_FILE_LOCKING@
+DIAGS = @DIAGS@
 DIRECT_VFD = @DIRECT_VFD@
 DLLTOOL = @DLLTOOL@
+DOXYGEN_EXAMPLES_DIRECTORY = @DOXYGEN_EXAMPLES_DIRECTORY@
+DOXYGEN_EXTERNAL_SEARCH = @DOXYGEN_EXTERNAL_SEARCH@
+DOXYGEN_HTML_EXTRA_FILES = @DOXYGEN_HTML_EXTRA_FILES@
+DOXYGEN_HTML_EXTRA_STYLESHEET = @DOXYGEN_HTML_EXTRA_STYLESHEET@
+DOXYGEN_HTML_FOOTER = @DOXYGEN_HTML_FOOTER@
+DOXYGEN_HTML_HEADER = @DOXYGEN_HTML_HEADER@
+DOXYGEN_INCLUDE_ALIASES = @DOXYGEN_INCLUDE_ALIASES@
+DOXYGEN_INPUT_DIRECTORY = @DOXYGEN_INPUT_DIRECTORY@
+DOXYGEN_LAYOUT_FILE = @DOXYGEN_LAYOUT_FILE@
+DOXYGEN_MACRO_EXPANSION = @DOXYGEN_MACRO_EXPANSION@
+DOXYGEN_OPTIMIZE_OUTPUT_FOR_C = @DOXYGEN_OPTIMIZE_OUTPUT_FOR_C@
+DOXYGEN_OUTPUT_DIRECTORY = @DOXYGEN_OUTPUT_DIRECTORY@
+DOXYGEN_PACKAGE = @DOXYGEN_PACKAGE@
+DOXYGEN_PAPER_SIZE = @DOXYGEN_PAPER_SIZE@
+DOXYGEN_PROJECT_BRIEF = @DOXYGEN_PROJECT_BRIEF@
+DOXYGEN_PROJECT_LOGO = @DOXYGEN_PROJECT_LOGO@
+DOXYGEN_SEARCHENGINE_URL = @DOXYGEN_SEARCHENGINE_URL@
+DOXYGEN_SERVER_BASED_SEARCH = @DOXYGEN_SERVER_BASED_SEARCH@
+DOXYGEN_VERSION_STRING = @DOXYGEN_VERSION_STRING@
 DSYMUTIL = @DSYMUTIL@
 DUMPBIN = @DUMPBIN@
+DX_CONFIG = @DX_CONFIG@
+DX_DOCDIR = @DX_DOCDIR@
+DX_DOT = @DX_DOT@
+DX_DOXYGEN = @DX_DOXYGEN@
+DX_DVIPS = @DX_DVIPS@
+DX_EGREP = @DX_EGREP@
+DX_ENV = @DX_ENV@
+DX_FLAG_chi = @DX_FLAG_chi@
+DX_FLAG_chm = @DX_FLAG_chm@
+DX_FLAG_doc = @DX_FLAG_doc@
+DX_FLAG_dot = @DX_FLAG_dot@
+DX_FLAG_html = @DX_FLAG_html@
+DX_FLAG_man = @DX_FLAG_man@
+DX_FLAG_pdf = @DX_FLAG_pdf@
+DX_FLAG_ps = @DX_FLAG_ps@
+DX_FLAG_rtf = @DX_FLAG_rtf@
+DX_FLAG_xml = @DX_FLAG_xml@
+DX_HHC = @DX_HHC@
+DX_LATEX = @DX_LATEX@
+DX_MAKEINDEX = @DX_MAKEINDEX@
+DX_PDFLATEX = @DX_PDFLATEX@
+DX_PERL = @DX_PERL@
+DX_PROJECT = @DX_PROJECT@
 ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
@@ -501,6 +546,7 @@ H5_CPPFLAGS = @H5_CPPFLAGS@
 H5_CXXFLAGS = @H5_CXXFLAGS@
 H5_FCFLAGS = @H5_FCFLAGS@
 H5_FORTRAN_SHARED = @H5_FORTRAN_SHARED@
+H5_IS_DARWIN = @H5_IS_DARWIN@
 H5_JAVACFLAGS = @H5_JAVACFLAGS@
 H5_JAVAFLAGS = @H5_JAVAFLAGS@
 H5_JNIFLAGS = @H5_JNIFLAGS@
@@ -511,6 +557,7 @@ HAVE_DMALLOC = @HAVE_DMALLOC@
 HAVE_Fortran_INTEGER_SIZEOF_16 = @HAVE_Fortran_INTEGER_SIZEOF_16@
 HAVE_LIBHDFS = @HAVE_LIBHDFS@
 HAVE_PTHREAD = @HAVE_PTHREAD@
+HDF5_DOXYGEN = @HDF5_DOXYGEN@
 HDF5_HL = @HDF5_HL@
 HDF5_INTERFACES = @HDF5_INTERFACES@
 HDF5_TESTS = @HDF5_TESTS@
@@ -523,6 +570,7 @@ HL = @HL@
 HL_FOR = @HL_FOR@
 HSIZE_T = @HSIZE_T@
 HSSIZE_T = @HSSIZE_T@
+IGNORE_DISABLED_FILE_LOCKS = @IGNORE_DISABLED_FILE_LOCKS@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -560,6 +608,7 @@ MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
 MAP_API = @MAP_API@
 MEMORYALLOCSANITYCHECK = @MEMORYALLOCSANITYCHECK@
+MIRROR_VFD = @MIRROR_VFD@
 MKDIR_P = @MKDIR_P@
 MPE = @MPE@
 NM = @NM@
@@ -596,6 +645,7 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PREADWRITE = @PREADWRITE@
 PROFILING = @PROFILING@
 RANLIB = @RANLIB@
+RECURSIVE_RW_LOCKS = @RECURSIVE_RW_LOCKS@
 ROOT = @ROOT@
 ROS3_VFD = @ROS3_VFD@
 RUNPARALLEL = @RUNPARALLEL@
@@ -619,6 +669,7 @@ TIME = @TIME@
 TR = @TR@
 TRACE_API = @TRACE_API@
 UNAME_INFO = @UNAME_INFO@
+USE_FILE_LOCKING = @USE_FILE_LOCKING@
 USE_FILTER_DEFLATE = @USE_FILTER_DEFLATE@
 USE_FILTER_SZIP = @USE_FILTER_SZIP@
 USINGMEMCHECKER = @USINGMEMCHECKER@
@@ -711,15 +762,15 @@ LIBH5_HL = $(top_builddir)/hl/src/libhdf5_hl.la
 LIBH5F_HL = $(top_builddir)/hl/fortran/src/libhdf5hl_fortran.la
 LIBH5CPP_HL = $(top_builddir)/hl/c++/src/libhdf5_hl_cpp.la
 
-# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below  
-# has been removed. According to the official description of DESTDIR by Gnu at 
-# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is 
-# prepended to the normal and complete install path that it precedes for the 
-# purpose of installing in a temporary directory which is useful for building 
-# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another 
-# '/' at the beginning of the normal install path.  When DESTDIR is empty the  
-# path then begins with '//', which is incorrect and causes problems at least for 
-# Cygwin.   
+# Note that in svn revision 19400 the '/' after DESTDIR in H5* variables below
+# has been removed. According to the official description of DESTDIR by Gnu at
+# http://www.gnu.org/prep/standards/html_node/DESTDIR.html, DESTDIR is
+# prepended to the normal and complete install path that it precedes for the
+# purpose of installing in a temporary directory which is useful for building
+# rpms and other packages.  The '/' after ${DESTDIR} will be followed by another
+# '/' at the beginning of the normal install path.  When DESTDIR is empty the
+# path then begins with '//', which is incorrect and causes problems at least for
+# Cygwin.
 
 # Scripts used to build examples
 # If only shared libraries have been installed, have h5cc build examples with
@@ -769,7 +820,7 @@ LIB = $(lib_LIBRARIES) $(lib_LTLIBRARIES) $(noinst_LIBRARIES)                 \
 PROGS = $(bin_PROGRAMS) $(bin_SCRIPTS) $(noinst_PROGRAMS) $(noinst_SCRIPTS)   \
         $(EXTRA_PROG)
 
-chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST) 
+chk_TESTS = $(check_PROGRAMS) $(check_SCRIPTS) $(EXTRA_TEST)
 TEST_EXTENSIONS = .sh
 SH_LOG_COMPILER = $(SHELL)
 AM_SH_LOG_FLAGS = 
@@ -1249,9 +1300,9 @@ uninstall-am:
 # commands that should be executed even if a file with the same name already
 # exists.
 .PHONY: build-check-clean build-check-p build-check-s build-lib build-progs \
-        build-tests check-clean check-install check-p check-s check-vfd \
-        check-passthrough-vol install-doc lib progs tests uninstall-doc \
-        _exec_check-s _test help
+	build-tests check-clean check-install check-p check-s check-vfd \
+	check-passthrough-vol install-doc lib progs tests uninstall-doc \
+	_exec_check-s _test help trace doxygen
 
 help:
 	@$(top_srcdir)/bin/makehelp
diff --git a/c++/test/dsets.cpp b/c++/test/dsets.cpp
index 0116d6c..52e3e73 100644
--- a/c++/test/dsets.cpp
+++ b/c++/test/dsets.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -23,11 +23,7 @@
 
  ***************************************************************************/
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -46,6 +42,8 @@ const H5std_string DSET_SIMPLE_IO_NAME("simple_io");
 const H5std_string DSET_TCONV_NAME("tconv");
 const H5std_string DSET_COMPRESS_NAME("compressed");
 const H5std_string DSET_BOGUS_NAME("bogus");
+const H5std_string DSET_OPERATOR("testing operator=");
+const H5std_string DSET_OPERATOR_PATH("/testing operator=");
 
 /* Temporary filter IDs used for testing */
 const int H5Z_FILTER_BOGUS = 305;
@@ -62,9 +60,6 @@ static size_t filter_bogus(unsigned int flags, size_t cd_nelmts, const unsigned
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Friday, January 5, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -188,9 +183,6 @@ test_create(H5File &file)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Friday, January 5, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -267,9 +259,6 @@ test_simple_io(H5File &file)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler
- *              Thursday, March 22, 2012
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -329,9 +318,6 @@ test_datasize(FileAccPropList &fapl)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Friday, January 5, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -398,13 +384,13 @@ test_tconv(H5File &file)
 
 /* This message derives from H5Z */
 const H5Z_class2_t H5Z_BOGUS[1] = {{
-    H5Z_CLASS_T_VERS,         /* H5Z_class_t version number   */
-    H5Z_FILTER_BOGUS,         /* Filter id number             */
-    1, 1,                     /* Encode and decode enabled    */
-    "bogus",                  /* Filter name for debugging        */
-    NULL,                     /* The "can apply" callback     */
-    NULL,                     /* The "set local" callback     */
-    (H5Z_func_t)filter_bogus, /* The actual filter function        */
+    H5Z_CLASS_T_VERS, /* H5Z_class_t version number   */
+    H5Z_FILTER_BOGUS, /* Filter id number             */
+    1, 1,             /* Encode and decode enabled    */
+    "bogus",          /* Filter name for debugging        */
+    NULL,             /* The "can apply" callback     */
+    NULL,             /* The "set local" callback     */
+    filter_bogus,     /* The actual filter function        */
 }};
 
 /*-------------------------------------------------------------------------
@@ -439,9 +425,6 @@ filter_bogus(unsigned int flags, size_t cd_nelmts, const unsigned int cd_values[
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Friday, January 5, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -712,10 +695,6 @@ test_compression(H5File &file)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler
- *              Friday, April 22, 2016
- *
  *-------------------------------------------------------------------------
  */
 const H5std_string DSET_NBIT_NAME("nbit_dataset");
@@ -827,9 +806,6 @@ test_nbit_compression(H5File &file)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Saturday, February 17, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -903,9 +879,6 @@ test_multiopen(H5File &file)
  * Return       Success: 0
  *
  *              Failure: -1
- *
- * Programmer   Binh-Minh Ribler (using C version)
- *              February 17, 2001
  *-------------------------------------------------------------------------
  */
 static herr_t
@@ -1161,7 +1134,7 @@ const int          RANK1 = 1;
 const H5std_string FILE_ACCPLIST("test_accplist.h5");
 
 static herr_t
-test_chunk_cache(FileAccPropList fapl)
+test_chunk_cache(const FileAccPropList &fapl)
 {
     SUBTEST("DSetAccPropList::set/getChunkCache");
 
@@ -1173,7 +1146,7 @@ test_chunk_cache(FileAccPropList fapl)
         // Verify that chunk cache parameters are the same
         int    mdc_nelmts = 0;
         size_t nslots_1 = 0, nslots_4 = 0, nbytes_1 = 0, nbytes_4 = 0;
-        double w0_1 = 0.0F, w0_4 = 0.0F;
+        double w0_1 = 0.0, w0_4 = 0.0;
         fapl_def.getCache(mdc_nelmts, nslots_1, nbytes_1, w0_1);
         dapl.getChunkCache(nslots_4, nbytes_4, w0_4);
         verify_val(nslots_1, nslots_4, "DSetAccPropList::getChunkCache", __LINE__, __FILE__);
@@ -1191,7 +1164,7 @@ test_chunk_cache(FileAccPropList fapl)
         // Set new rdcc settings on fapl local
         size_t nslots_2 = nslots_1 * 2;
         size_t nbytes_2 = nbytes_1 * 2;
-        double w0_2     = w0_1 / (double)2.0F;
+        double w0_2     = w0_1 / 2.0;
         fapl_local.getCache(mdc_nelmts, nslots_2, nbytes_2, w0_2);
 
         // Create a new file using default fcpl and the passed-in fapl
@@ -1262,10 +1235,6 @@ test_chunk_cache(FileAccPropList fapl)
  *
  * Return       Success:        0
  *              Failure:        number of errors
- *
- * Programmer   Binh-Minh Ribler
- *              Friday, March 10, 2017
- *
  *-------------------------------------------------------------------------
  */
 const int RANK = 2;
@@ -1332,6 +1301,60 @@ test_virtual()
 } // test_virtual
 
 /*-------------------------------------------------------------------------
+ * Function:    test_operator
+ *
+ * Purpose      Tests DataSet::operator=
+ *
+ * Return       Success: 0
+ *
+ *              Failure: -1
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_operator(H5File &file)
+{
+    SUBTEST("DataSet::operator=");
+
+    try {
+        // Create a data space
+        hsize_t dims[2];
+        dims[0] = 256;
+        dims[1] = 512;
+        DataSpace space(2, dims, NULL);
+
+        // Create a dataset using the default dataset creation properties.
+        // We're not sure what they are, so we won't check.
+        DataSet dataset = file.createDataSet(DSET_OPERATOR, PredType::NATIVE_DOUBLE, space);
+
+        // Add a comment to the dataset
+        file.setComment(DSET_OPERATOR, "Dataset using operator=");
+
+        // Close the dataset
+        dataset.close();
+
+        // Re-open the dataset
+        DataSet another_dataset(file.openDataSet(DSET_OPERATOR));
+
+        // Try operator= to make another dataset
+        DataSet copied_dataset = another_dataset;
+
+        H5std_string copied_dataset_name  = copied_dataset.getObjName();
+        H5std_string another_dataset_name = another_dataset.getObjName();
+
+        PASSED();
+        return 0;
+    } // try block
+
+    // catch all other exceptions
+    catch (Exception &E) {
+        issue_fail_msg("test_operator", __LINE__, __FILE__);
+
+        // clean up and return with failure
+        return -1;
+    }
+} // test_operator
+
+/*-------------------------------------------------------------------------
  * Function:    test_dset
  *
  * Purpose      Tests the dataset interface (H5D)
@@ -1340,9 +1363,6 @@ test_virtual()
  *
  *              Failure: -1
  *
- * Programmer   Binh-Minh Ribler (using C version)
- *              Friday, January 5, 2001
- *
  * Modifications:
  *        Nov 12, 01:
  *              - moved h5_cleanup to outside of try block because
@@ -1380,6 +1400,7 @@ test_dset()
         nerrors += test_multiopen(file) < 0 ? 1 : 0;
         nerrors += test_types(file) < 0 ? 1 : 0;
         nerrors += test_virtual() < 0 ? 1 : 0;
+        nerrors += test_operator(file) < 0 ? 1 : 0;
         nerrors += test_chunk_cache(fapl) < 0 ? 1 : 0;
 
         // Close group "emit diagnostics".
diff --git a/c++/test/h5cpputil.cpp b/c++/test/h5cpputil.cpp
index 960e9c9..78169b2 100644
--- a/c++/test/h5cpputil.cpp
+++ b/c++/test/h5cpputil.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -19,11 +19,7 @@
 
  ***************************************************************************/
 
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -218,7 +214,7 @@ InvalidActionException::InvalidActionException() : Exception()
 //              func    - IN: Name of the function where failure should occur
 //              message - IN: Message
 //--------------------------------------------------------------------------
-InvalidActionException::InvalidActionException(const H5std_string func, const H5std_string message)
+InvalidActionException::InvalidActionException(const H5std_string &func, const H5std_string &message)
     : Exception(func, message)
 {
 }
@@ -247,7 +243,7 @@ TestFailedException::TestFailedException() : Exception()
 //              func    - IN: Name of the function where failure should occur
 //              message - IN: Message
 //--------------------------------------------------------------------------
-TestFailedException::TestFailedException(const H5std_string func, const H5std_string message)
+TestFailedException::TestFailedException(const H5std_string &func, const H5std_string &message)
     : Exception(func, message)
 {
 }
diff --git a/c++/test/h5cpputil.h b/c++/test/h5cpputil.h
index 97ed00b..444bc68 100644
--- a/c++/test/h5cpputil.h
+++ b/c++/test/h5cpputil.h
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -19,8 +19,8 @@
 
  ***************************************************************************/
 
-#ifndef _h5cpputil_h
-#define _h5cpputil_h
+#ifndef H5cpputil_H
+#define H5cpputil_H
 
 #include "h5test.h"
 
@@ -48,14 +48,14 @@ void issue_fail_msg(const char *where, int line, const char *file_name, const ch
 
 class InvalidActionException : public Exception {
   public:
-    InvalidActionException(const H5std_string func_name, const H5std_string message = DEFAULT_MSG);
+    InvalidActionException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     InvalidActionException();
     virtual ~InvalidActionException() throw();
 };
 
 class TestFailedException : public Exception {
   public:
-    TestFailedException(const H5std_string func_name, const H5std_string message = DEFAULT_MSG);
+    TestFailedException(const H5std_string &func_name, const H5std_string &message = DEFAULT_MSG);
     TestFailedException();
     virtual ~TestFailedException() throw();
 };
diff --git a/c++/test/tarray.cpp b/c++/test/tarray.cpp
index c61388d..7525c5f 100644
--- a/c++/test/tarray.cpp
+++ b/c++/test/tarray.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
    tarray.cpp - HDF5 C++ testing the array datatype functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -85,7 +81,7 @@ test_array_compound_array()
     // Initialize array data to write
     for (idxi = 0; idxi < SPACE1_DIM1; idxi++)
         for (idxj = 0; idxj < ARRAY1_DIM1; idxj++) {
-            wdata[idxi][idxj].i = idxi * 10 + idxj;
+            wdata[idxi][idxj].i = static_cast<int>(idxi * 10 + idxj);
             for (idxk = 0; idxk < ARRAY1_DIM1; idxk++) {
                 float temp                = idxi * 10.0 + idxj * 2.5 + idxk;
                 wdata[idxi][idxj].f[idxk] = temp;
@@ -182,8 +178,9 @@ test_array_compound_array()
         // Check the array dimensions
         for (ii = 0; ii < ndims; ii++)
             if (rdims1[ii] != tdims1[ii]) {
-                TestErrPrintf("Array dimension information doesn't match!, rdims1[%d]=%zd, tdims1[%d]=z%d\n",
-                              ii, rdims1[ii], ii, tdims1[ii]);
+                TestErrPrintf(
+                    "Array dimension information doesn't match!, rdims1[%d]=%lld, tdims1[%d]=%lld\n", ii,
+                    rdims1[ii], ii, tdims1[ii]);
                 continue;
             } // end if
 
@@ -200,8 +197,9 @@ test_array_compound_array()
         // Check the array dimensions
         for (ii = 0; ii < ndims; ii++)
             if (rdims1[ii] != tdims1[ii]) {
-                TestErrPrintf("Array dimension information doesn't match!, rdims1[%d]=%zd, tdims1[%d]=%zd\n",
-                              ii, rdims1[ii], ii, tdims1[ii]);
+                TestErrPrintf(
+                    "Array dimension information doesn't match!, rdims1[%d]=%lld, tdims1[%d]=%lld\n", ii,
+                    rdims1[ii], ii, tdims1[ii]);
                 continue;
             } // end if
 
@@ -250,8 +248,9 @@ test_array_compound_array()
         // Check the array dimensions
         for (ii = 0; ii < ndims; ii++)
             if (rdims1[ii] != tdims1[ii]) {
-                TestErrPrintf("Array dimension information doesn't match!, rdims1[%d]=%zd, tdims1[%d]=%zd\n",
-                              ii, rdims1[ii], ii, tdims1[ii]);
+                TestErrPrintf(
+                    "Array dimension information doesn't match!, rdims1[%d]=%lld, tdims1[%d]=%lld\n", ii,
+                    rdims1[ii], ii, tdims1[ii]);
                 continue;
             } // end if
 
@@ -266,9 +265,9 @@ test_array_compound_array()
         for (idxi = 0; idxi < SPACE1_DIM1; idxi++) {
             for (idxj = 0; idxj < ARRAY1_DIM1; idxj++) {
                 if (wdata[idxi][idxj].i != rdata[idxi][idxj].i) {
-                    TestErrPrintf(
-                        "Array data information doesn't match!, wdata[%d][%d].i=%d, rdata[%d][%d].i=%d\n",
-                        idxi, idxj, wdata[idxi][idxj].i, idxi, idxj, rdata[idxi][idxj].i);
+                    TestErrPrintf("Array data information doesn't match!, wdata[%lld][%lld].i=%d, "
+                                  "rdata[%lld][%lld].i=%d\n",
+                                  idxi, idxj, wdata[idxi][idxj].i, idxi, idxj, rdata[idxi][idxj].i);
                     continue;
                 } // end if
             }     // end for
@@ -378,7 +377,6 @@ test_array_info()
         float f[ARRAY1_DIM1];
     } s1_t;
     s1_t        wdata[SPACE1_DIM1][ARRAY1_DIM1]; // Information to write
-    s1_t        rdata[SPACE1_DIM1][ARRAY1_DIM1]; // Information read in
     hsize_t     sdims1[] = {SPACE1_DIM1};
     hsize_t     tdims1[] = {ARRAY1_DIM1};
     int         ii;               // counting variables
@@ -388,7 +386,7 @@ test_array_info()
     // Initialize array data to write
     for (idxi = 0; idxi < SPACE1_DIM1; idxi++)
         for (idxj = 0; idxj < ARRAY1_DIM1; idxj++) {
-            wdata[idxi][idxj].i = idxi * 10 + idxj;
+            wdata[idxi][idxj].i = static_cast<int>(idxi * 10 + idxj);
             for (idxk = 0; idxk < ARRAY1_DIM1; idxk++) {
                 float temp                = idxi * 10.0 + idxj * 2.5 + idxk;
                 wdata[idxi][idxj].f[idxk] = temp;
@@ -460,7 +458,7 @@ test_array_info()
             for (ii = 0; ii < ndims; ii++)
                 if (rdims1[ii] != tdims1[ii]) {
                     TestErrPrintf(
-                        "Array dimension information doesn't match!, rdims1[%d]=%zd, tdims1[%d]=z%d\n", ii,
+                        "Array dimension information doesn't match!, rdims1[%d]=%llu, tdims1[%d]=z%llu\n", ii,
                         rdims1[ii], ii, tdims1[ii]);
                     continue;
                 } // end if
diff --git a/c++/test/tattr.cpp b/c++/test/tattr.cpp
index 2290fff..adaa237 100644
--- a/c++/test/tattr.cpp
+++ b/c++/test/tattr.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -17,11 +17,7 @@
         C attribute interface (H5A)
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -173,8 +169,8 @@ test_attr_basic_write()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
-                              i, attr_data1[i], i, read_data1[i]);
+                TestErrPrintf("%d: attribute data different: attr_data1[%llu]=%d,read_data1[%llu]=%d\n",
+                              __LINE__, i, attr_data1[i], i, read_data1[i]);
 
         // Create two more attributes for this dataset, but only write to one.
         Attribute ds_attr2 = dataset.createAttribute(ATTR2_NAME, PredType::NATIVE_INT, att_space);
@@ -189,7 +185,7 @@ test_attr_basic_write()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1a[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1a[%d]=%d,read_data1[%d]=%d\n",
+                TestErrPrintf("%d: attribute data different: attr_data1a[%llu]=%d,read_data1[%llu]=%d\n",
                               __LINE__, i, attr_data1a[i], i, read_data1[i]);
 
         // Close both attributes
@@ -452,8 +448,8 @@ test_attr_rename()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
-                              i, attr_data1[i], i, read_data1[i]);
+                TestErrPrintf("%d: attribute data different: attr_data1[%llu]=%d,read_data1[%llu%d\n",
+                              __LINE__, i, attr_data1[i], i, read_data1[i]);
 
         // Close attribute
         attr1.close();
@@ -476,7 +472,7 @@ test_attr_rename()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1a[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1a[%d]=%d,read_data1[%d]=%d\n",
+                TestErrPrintf("%d: attribute data different: attr_data1a[%llu]=%d,read_data1[%llu]=%d\n",
                               __LINE__, i, attr_data1a[i], i, read_data1[i]);
 
         // Close attribute
@@ -541,7 +537,7 @@ test_attr_basic_read()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d, read_data1[%d]=%d\n",
+                TestErrPrintf("%d: attribute data different: attr_data1[%llu]=%d, read_data1[%llu]=%d\n",
                               __LINE__, i, attr_data1[i], i, read_data1[i]);
 
         /*
@@ -572,9 +568,9 @@ test_attr_basic_read()
         for (i = 0; i < ATTR2_DIM1; i++)
             for (j = 0; j < ATTR2_DIM2; j++)
                 if (attr_data2[i][j] != read_data2[i][j]) {
-                    TestErrPrintf(
-                        "%d: attribute data different: attr_data2[%d][%d]=%d, read_data2[%d][%d]=%d\n",
-                        __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);
+                    TestErrPrintf("%d: attribute data different: attr_data2[%llu][%llu]=%d, "
+                                  "read_data2[%llu][%llu]=%d\n",
+                                  __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);
                 }
         PASSED();
     } // end try block
@@ -775,16 +771,16 @@ test_attr_compound_read()
         hsize_t ii, jj;
         for (ii = 0; ii < ATTR4_DIM1; ii++)
             for (jj = 0; jj < ATTR4_DIM2; jj++)
-                if (HDmemcmp(&attr_data4[ii][jj], &read_data4[ii][jj], sizeof(struct attr4_struct))) {
-                    TestErrPrintf(
-                        "%d:attribute data different: attr_data4[%d][%d].i=%d, read_data4[%d][%d].i=%d\n",
-                        __LINE__, ii, jj, attr_data4[ii][jj].i, ii, jj, read_data4[ii][jj].i);
-                    TestErrPrintf(
-                        "%d:attribute data different: attr_data4[%d][%d].d=%f, read_data4[%d][%d].d=%f\n",
-                        __LINE__, ii, jj, attr_data4[ii][jj].d, ii, jj, read_data4[ii][jj].d);
-                    TestErrPrintf(
-                        "%d:attribute data different: attr_data4[%d][%d].c=%c, read_data4[%d][%d].c=%c\n",
-                        __LINE__, ii, jj, attr_data4[ii][jj].c, ii, jj, read_data4[ii][jj].c);
+                if (HDmemcmp(&attr_data4[ii][jj], &read_data4[ii][jj], sizeof(struct attr4_struct)) != 0) {
+                    TestErrPrintf("%d:attribute data different: attr_data4[%llu][%llu].i=%d, "
+                                  "read_data4[%llu][%llu].i=%d\n",
+                                  __LINE__, ii, jj, attr_data4[ii][jj].i, ii, jj, read_data4[ii][jj].i);
+                    TestErrPrintf("%d:attribute data different: attr_data4[%llu][%llu].d=%f, "
+                                  "read_data4[%llu][%llu].d=%f\n",
+                                  __LINE__, ii, jj, attr_data4[ii][jj].d, ii, jj, read_data4[ii][jj].d);
+                    TestErrPrintf("%d:attribute data different: attr_data4[%llu][%llu].c=%c, "
+                                  "read_data4[%llu][%llu].c=%c\n",
+                                  __LINE__, ii, jj, attr_data4[ii][jj].c, ii, jj, read_data4[ii][jj].c);
                 } /* end if */
 
         // Verify name
@@ -1048,7 +1044,7 @@ test_attr_mult_read()
         hsize_t dims[ATTR_MAX_DIMS]; // Attribute dimensions
         int     ndims = space.getSimpleExtentDims(dims);
         if ((long)dims[0] != (long)ATTR1_DIM1)
-            TestErrPrintf("%d:attribute dimensions different: dims[0]=%d, should be %d\n", __LINE__,
+            TestErrPrintf("%d:attribute dimensions different: dims[0]=%d, should be %llu\n", __LINE__,
                           (int)dims[0], ATTR1_DIM1);
 
         /* Verify Datatype */
@@ -1076,8 +1072,8 @@ test_attr_mult_read()
         // Verify values read in
         for (i = 0; i < ATTR1_DIM1; i++)
             if (attr_data1[i] != read_data1[i])
-                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
-                              i, attr_data1[i], i, read_data1[i]);
+                TestErrPrintf("%d: attribute data different: attr_data1[%llu]=%d,read_data1[%llu]=%d\n",
+                              __LINE__, i, attr_data1[i], i, read_data1[i]);
 
         // Verify Name
         H5std_string attr_name = attr.getName();
@@ -1131,9 +1127,9 @@ test_attr_mult_read()
         for (i = 0; i < ATTR2_DIM1; i++)
             for (j = 0; j < ATTR2_DIM2; j++)
                 if (attr_data2[i][j] != read_data2[i][j])
-                    TestErrPrintf(
-                        "%d: attribute data different: attr_data2[%d][%d]=%d, read_data2[%d][%d]=%d\n",
-                        __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);
+                    TestErrPrintf("%d: attribute data different: attr_data2[%llu][%llu]=%d, "
+                                  "read_data2[%llu][%llu]=%d\n",
+                                  __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);
 
         // Verify Name
         attr_name = attr.getName();
@@ -1186,8 +1182,8 @@ test_attr_mult_read()
             for (j = 0; j < ATTR3_DIM2; j++)
                 for (k = 0; k < ATTR3_DIM3; k++)
                     if (attr_data3[i][j][k] != read_data3[i][j][k])
-                        TestErrPrintf("%d: attribute data different: attr_data3[%d][%d][%d]=%f, "
-                                      "read_data3[%d][%d][%d]=%f\n",
+                        TestErrPrintf("%d: attribute data different: attr_data3[%llu][%llu][%llu]=%f, "
+                                      "read_data3[%llu][%llu][%llu]=%f\n",
                                       __LINE__, i, j, k, attr_data3[i][j][k], i, j, k, read_data3[i][j][k]);
 
         // Verify Name
diff --git a/c++/test/tcompound.cpp b/c++/test/tcompound.cpp
index 7b48a78..82c21e8 100644
--- a/c++/test/tcompound.cpp
+++ b/c++/test/tcompound.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
    tcompound.cpp - HDF5 C++ testing the compound data type functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -491,7 +487,7 @@ test_compound_5()
         int_array.close();
 
         /* Check results */
-        if (memcmp(src[1].name, dst[1].name, sizeof(src[1].name)) || src[1].tdim != dst[1].tdim ||
+        if (memcmp(src[1].name, dst[1].name, sizeof(src[1].name)) != 0 || src[1].tdim != dst[1].tdim ||
             src[1].coll_ids[0] != dst[1].coll_ids[0] || src[1].coll_ids[1] != dst[1].coll_ids[1] ||
             src[1].coll_ids[2] != dst[1].coll_ids[2] || src[1].coll_ids[3] != dst[1].coll_ids[3]) {
             H5_FAILED();
diff --git a/c++/test/tdspl.cpp b/c++/test/tdspl.cpp
index 4cdf408..257233e 100644
--- a/c++/test/tdspl.cpp
+++ b/c++/test/tdspl.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -17,11 +17,7 @@
                list functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
diff --git a/c++/test/testhdf5.cpp b/c++/test/testhdf5.cpp
index a38d36d..71428ce 100644
--- a/c++/test/testhdf5.cpp
+++ b/c++/test/testhdf5.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -38,11 +38,7 @@
         GetTestNumErrs() -- Retrieve the number of testing errors
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
diff --git a/c++/test/tfile.cpp b/c++/test/tfile.cpp
index b4e5da5..5e4e91b 100644
--- a/c++/test/tfile.cpp
+++ b/c++/test/tfile.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -20,11 +20,7 @@
         h5_fileaccess() -- in h5test.c, returns a file access template
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
diff --git a/c++/test/tfilter.cpp b/c++/test/tfilter.cpp
index e7788e5..e89838c 100644
--- a/c++/test/tfilter.cpp
+++ b/c++/test/tfilter.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
    tfilter.cpp - HDF5 C++ testing various filters and their combination.
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -49,20 +45,18 @@ static herr_t test_filter_internal(hid_t fid, const char *name, hid_t dcpl,
 /* Temporary filter IDs used for testing */
 const int H5Z_FILTER_BOGUS = 305;
 
-#if 0 // H5_ATTR_UNUSED variables caused warning, so duplicated below with NULL instead
-static size_t filter_bogus(unsigned int flags, size_t cd_nelmts,
-    const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
-#endif
-static size_t filter_bogus(size_t nbytes);
+static size_t filter_bogus(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values, size_t nbytes,
+                           size_t *buf_size, void **buf);
+
 /* This message derives from H5Z */
 const H5Z_class2_t H5Z_BOGUS[1] = {{
-    H5Z_CLASS_T_VERS,         /* H5Z_class_t version */
-    H5Z_FILTER_BOGUS,         /* Filter id number             */
-    1, 1,                     /* Encoding and decoding enabled */
-    "bogus",                  /* Filter name for debugging    */
-    NULL,                     /* The "can apply" callback     */
-    NULL,                     /* The "set local" callback     */
-    (H5Z_func_t)filter_bogus, /* The actual filter function   */
+    H5Z_CLASS_T_VERS, /* H5Z_class_t version */
+    H5Z_FILTER_BOGUS, /* Filter id number             */
+    1, 1,             /* Encoding and decoding enabled */
+    "bogus",          /* Filter name for debugging    */
+    NULL,             /* The "can apply" callback     */
+    NULL,             /* The "set local" callback     */
+    filter_bogus,     /* The actual filter function   */
 }};
 
 /*-------------------------------------------------------------------------
@@ -79,13 +73,15 @@ const H5Z_class2_t H5Z_BOGUS[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-#if 0 // H5_ATTR_UNUSED variables caused warning, so duplicated below with NULL instead
-filter_bogus(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
-      const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
-      size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
-#endif
-filter_bogus(size_t nbytes)
+filter_bogus(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values, size_t nbytes,
+             size_t *buf_size, void **buf)
 {
+    (void)flags;
+    (void)cd_nelmts;
+    (void)cd_values;
+    (void)buf_size;
+    (void)buf;
+
     return nbytes;
 }
 
diff --git a/c++/test/th5s.cpp b/c++/test/th5s.cpp
index 8709c25..9952e68 100644
--- a/c++/test/th5s.cpp
+++ b/c++/test/th5s.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -19,11 +19,7 @@
    EXTERNAL ROUTINES/VARIABLES:
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -516,7 +512,7 @@ test_h5s_compound_scalar_read()
         dataset.read(&rdata, type);
 
         // Verify read data
-        if (HDmemcmp(&space4_data, &rdata, sizeof(struct space4_struct))) {
+        if (HDmemcmp(&space4_data, &rdata, sizeof(struct space4_struct)) != 0) {
             cerr << "scalar data different: space4_data.c1=" << space4_data.c1
                  << ", read_data4.c1=" << rdata.c1 << endl;
             cerr << "scalar data different: space4_data.u=" << space4_data.u << ", read_data4.u=" << rdata.u
diff --git a/c++/test/titerate.cpp b/c++/test/titerate.cpp
index 83229b9..17620ca 100644
--- a/c++/test/titerate.cpp
+++ b/c++/test/titerate.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
         titerate.cpp - HDF5 C++ testing iterate related functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
diff --git a/c++/test/tlinks.cpp b/c++/test/tlinks.cpp
index 8690ac2..e8dad5b 100644
--- a/c++/test/tlinks.cpp
+++ b/c++/test/tlinks.cpp
@@ -5,7 +5,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
         C link interface (H5L)
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -593,7 +589,7 @@ visit_obj_cb(H5Object &obj, const H5std_string name, const H5O_info2_t *oinfo, v
     ovisit_ud_t *op_data = static_cast<ovisit_ud_t *>(_op_data);
 
     // Check for correct object information
-    if (strcmp(op_data->info[op_data->idx].path, name.c_str()))
+    if (strcmp(op_data->info[op_data->idx].path, name.c_str()) != 0)
         return (H5_ITER_ERROR);
     if (op_data->info[op_data->idx].type != oinfo->type)
         return (H5_ITER_ERROR);
diff --git a/c++/test/tobject.cpp b/c++/test/tobject.cpp
index 10efe89..5892f39 100644
--- a/c++/test/tobject.cpp
+++ b/c++/test/tobject.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
    tobject.cpp - HDF5 C++ testing object related functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 
 #include <string>
 #include "H5Cpp.h" // C++ API header file
@@ -423,8 +419,7 @@ const H5std_string DSETNAME("dataset");
 static void
 test_open_object_header()
 {
-    hsize_t    dims[2];
-    H5G_info_t ginfo; /* Group info struct */
+    hsize_t dims[2];
 
     // Output message about test being performed
     SUBTEST("Group::getObjId");
@@ -479,6 +474,7 @@ test_open_object_header()
         dset.setId(obj_dset);
         dspace         = dset.getSpace();
         bool is_simple = dspace.isSimple();
+        verify_val(is_simple, true, "isSimple", __LINE__, __FILE__);
         dspace.close();
 
         // Open datatype object from the group
diff --git a/c++/test/trefer.cpp b/c++/test/trefer.cpp
index beba36a..939b0ee 100644
--- a/c++/test/trefer.cpp
+++ b/c++/test/trefer.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -17,11 +17,7 @@
                 Reference interface (H5R)
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
diff --git a/c++/test/ttypes.cpp b/c++/test/ttypes.cpp
index 7858757..a244965 100644
--- a/c++/test/ttypes.cpp
+++ b/c++/test/ttypes.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -16,11 +16,7 @@
    ttypes.cpp - HDF5 C++ testing the general datatype functionality
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -399,7 +395,7 @@ test_vltype()
 
         // Verify that the copied type has a valid id
         bool is_valid = IdComponent::isValid(vltype2.getId());
-        verify_val(in_class, true, "isValid on vltype2", __LINE__, __FILE__);
+        verify_val(is_valid, true, "isValid on vltype2", __LINE__, __FILE__);
 
         in_class = vltype2.detectClass(H5T_VLEN);
         verify_val(in_class, true, "VarLenType::detectClass() with H5T_VLEN for vltype2", __LINE__, __FILE__);
@@ -730,8 +726,11 @@ test_named()
 
         // It should be possible to define an attribute for the named type
         Attribute attr1 = itype.createAttribute("attr1", PredType::NATIVE_UCHAR, space);
-        for (i = 0; i < ds_size[0] * ds_size[1]; i++)
-            attr_data[0][i] = (int)i; /*tricky*/
+        for (hsize_t i = 0; i < ds_size[0]; i++) {
+            for (hsize_t j = 0; j < ds_size[1]; j++) {
+                attr_data[i][j] = static_cast<unsigned>(i * ds_size[1] + j);
+            }
+        }
         attr1.write(PredType::NATIVE_UINT, attr_data);
         attr1.close();
 
@@ -1017,8 +1016,8 @@ test_encode_decode()
         FloatType decoded_flttyp(decoded_flt_ptr->getId());
         verify_val(flttyp == decoded_flttyp, true, "DataType::decode", __LINE__, __FILE__);
 
-        H5std_string norm_string;
-        H5T_norm_t   mant_norm = decoded_flttyp.getNorm(norm_string);
+        // H5std_string norm_string;
+        // H5T_norm_t mant_norm = decoded_flttyp.getNorm(norm_string);
         // verify_val(decoded_flttyp.isVariableStr(), true, "DataType::decode", __LINE__, __FILE__);
 
         delete decoded_flt_ptr;
diff --git a/c++/test/tvlstr.cpp b/c++/test/tvlstr.cpp
index 8f0c0ab..b371518 100644
--- a/c++/test/tvlstr.cpp
+++ b/c++/test/tvlstr.cpp
@@ -6,7 +6,7 @@
  * This file is part of HDF5.  The full HDF5 copyright notice, including     *
  * terms governing use, modification, and redistribution, is contained in    *
  * the COPYING file, which can be found at the root of the source code       *
- * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
  * If you do not have access to either file, you may request a copy from     *
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -18,11 +18,7 @@
    EXTERNAL ROUTINES/VARIABLES:
 
  ***************************************************************************/
-#ifdef OLD_HEADER_FILENAME
-#include <iostream.h>
-#else
 #include <iostream>
-#endif
 using std::cerr;
 using std::endl;
 
@@ -187,7 +183,7 @@ test_vlstring_dataset()
         // Test scalar type dataset with 1 value.
         dset1 = root.createDataSet("test_scalar_small", vlst, ds_space);
 
-        dynstring_ds_write = (char *)HDcalloc(1, sizeof(char));
+        dynstring_ds_write = (char *)HDcalloc(2, sizeof(char));
         HDmemset(dynstring_ds_write, 'A', 1);
 
         // Write data to the dataset, then read it back.
@@ -865,7 +861,7 @@ read_scalar_dset(H5File &file, DataType &type, DataSpace &space, char *name, cha
         dset.read(&data_read, type, space, space);
         dset.close();
 
-        if (HDstrcmp(data, data_read))
+        if (HDstrcmp(data, data_read) != 0)
             TestErrPrintf("Expected %s for dataset %s but read %s\n", data, name, data_read);
 
         HDfree(data_read);