[svn-r335] Changes since 19980330

----------------------

./MANIFEST
./src/Makefile.in
./test/Makefile.in
        Added new files.

./config/linux
./src/H5HL.c
./src/H5HLprivate.h
./src/H5MF.c
./src/H5MFprivate.h
        Added `-DH5HL_DEBUG -DH5MF_DEBUG' to the debug list.

./html/H5.format.html
        Updated shared object message information.

./src/H5D.c
        Datasets can now share data types.

./src/H5F.c
        Updated a comment that referred to H5ACC_WRITE.

./src/H5HG.c
./src/H5HGprivate.h
        Moved a few things around.  Made debugging better so you can
        now give a collection address to ./src/debug and it shows some
        useful stuff.

./src/H5O.c
./src/H5Ocont.c
./src/H5Odtype.c
./src/H5Oefl.c
./src/H5Olayout.c
./src/H5Oname.c
./src/H5Onull.c
./src/H5Oprivate.h
./src/H5Osdspace.c
./src/H5Oshared.c       [NEW]
./src/H5Ostab.c
        Supports shared messages.

./src/H5T.c
./src/H5Tpkg.h
./src/H5Tprivate.h
./src/H5Tpublic.h
        The H5Tshare() function allows the user to give the library
        hints about how a data type will be used.

./test/shtype.c
        Tests the H5Tshare() function.

./test/gheap.c
        Tests the global heap.

./configure.in
./config/BlankForm      [NEW]
./config/alpha-dec
./config/freebsd2.2.1
./config/hpux10.20
./config/irix6.2
./config/irix64
./config/linux
./config/powerpc-ibm-aix4.2.1.0
./config/rs6000-ibm-aix4.1.4.0
./config/solaris2.5
        Cleaned up lots of configuration stuff and made the site
        configuration files lots easier and more uniform.  To make a
        new file grab the BlankForm and modify it.

        By default, debugging is turned on for most packages.  Within
        a package one can use `#ifdef H5AC_DEBUG' to wrap debugging
        code.  Other options are:

           --enable-debug
           --enable-debug=yes
               The default, most but not all packages.

           --disable-debug
           --enable-debug=no
           --enable-debug=none
               The symbol NDEBUG is defined and none of the package
               debug symbols.

           --enable-debug=all
               Debugging is turned on for all packages.  This might
               produce lots of output.

           --enable-debug=g,d
               Debugging is turned on for H5G and H5D.

        A compile mode is also now supported

           --enable-production
           --enable-production=yes
               The library is compiled with optimizations turned on.
               The compiler flags are augmented by adding PROD_CFLAGS
               and PROD_CPPFLAGS which are defined in the site config
               file.

           --disable-production
           --enable-production=no
               The default.  The library is compiled for development
               by including DEBUG_CFLAGS and DEBUG_CPPFLAGS defined in
               the site config file.  This is usually just `-g'.

           --enable-production=profile
           --enable-production=pg
               Builds a library for profiling by including the flags
               from PROFILE_CFLAGS and PROFILE_CPPFLAGS defined in the
               site config file.  This is usullay just `-pg' but it
               could include optimization flags as well depending on
               the type of profile one wants.

        In summary, configure by saying `./configure' and you'll get a
        development version of the library.  Configure by saying
        `./configure --enable-production --disable-debug' and you'll
        get a production version with no debugging code.

10 files changed, 345 insertions, 197 deletions

diff --git a/config/BlankForm b/config/BlankForm
new file mode 100644
index 0000000..a844dea
--- /dev/null
+++ b/config/BlankForm
@@ -0,0 +1,43 @@
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
+
+
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# Sometimes a particular compiler must be used.  If that's the case
+# then uncomment the following line.  Otherwise the main configure
+# script will try to detect the compiler automatically.
+#CC=gcc
+
+# What must *always* be present for things to compile correctly?
+#CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=-g
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=-O
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
diff --git a/config/alpha-dec b/config/alpha-dec
index 3e54c78..2c10695 100644
--- a/config/alpha-dec
+++ b/config/alpha-dec
@@ -1,54 +1,38 @@
-#!/bin/sh
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
 
-# Based on the setting of environment variable `HDF5_MODE' we set the
-# compiler flags unless they're already set.  Its value can be one or
-# more of the following words (be sure to use single quotes when
-# setting its value or the dollar signs will be expanded as variables
-# too soon):
-#
-#	$warn	    -- Generates compiler warnings.  You should always
-#	               include this since it has no effect on the speed of
-#	               the code produced.
-#
-#	$debug      -- Compiles in code to check for invariant conditions
-#	               and turns on the `-g' flag for interactive
-#	               debugging.  It also turns off seek optimizations in
-#                      the low-level file driver.  This version of the
-#                      library can be significantly slower than a production
-#                      version.
-#
-#       $production -- Compiles an optimized version of the library
-#       	       and disables code that checks for invariant
-#       	       conditions.
-#
-#       $profile    -- Compiles code with the `-pg' flag which
-#       	       produces a `gmon.out' file when the library
-#       	       runs. The gprof(1) command can read that file
-#       	       and produce detailed run-time statistics.
-#
-# If HDF5_MODE is undefined then we use the value 
-#
-#	$debug $warn -DH5F_LOW_DFLT=H5F_LOW_SEC2
-#
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
 
-# Unconditionally set the compiler to gcc since the following flags
-# only apply to that compiler.
-CC=cc      
+# What must *always* be present for things to compile correctly?
+#CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
 
-warn=""
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=-g
+DEBUG_CPPFLAGS="-DH5F_OPT_SEEK=0 -DH5F_LOW_DFLT=H5F_LOW_SEC2"
 
-profile="-pg"
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=-O
+PROD_CPPFLAGS=
 
-debug="-g -DH5AC_DEBUG -DH5B_DEBUG -DH5F_DEBUG -DH5G_DEBUG -UH5O_DEBUG -DH5T_DEBUG -DH5F_OPT_SEEK=0"
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
 
-production="-O -DNDEBUG"
 
-default_mode='$debug $warn  -DH5F_LOW_DFLT=H5F_LOW_SEC2'
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
 
-# Don't set CFLAGS if the user already did.
-if test -z "$CFLAGS"; then
-   CFLAGS="`eval echo ${HDF5_MODE:-$default_mode}`"
-   export CFLAGS
-fi
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
diff --git a/config/freebsd2.2.1 b/config/freebsd2.2.1
index ef1c706..2cf310c 100644
--- a/config/freebsd2.2.1
+++ b/config/freebsd2.2.1
@@ -1,54 +1,6 @@
-#!/bin/sh
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
-
-# Based on the setting of environment variable `HDF5_MODE' we set the
-# compiler flags unless they're already set.  Its value can be one or
-# more of the following words (be sure to use single quotes when
-# setting its value or the dollar signs will be expanded as variables
-# too soon):
-#
-#	$warn	    -- Generates compiler warnings.  You should always
-#	               include this since it has no effect on the speed of
-#	               the code produced.
-#
-#	$debug      -- Compiles in code to check for invariant conditions
-#	               and turns on the `-g' flag for interactive
-#	               debugging.  It also turns off seek optimizations in
-#                      the low-level file driver.  This version of the
-#                      library can be significantly slower than a production
-#                      version.
-#
-#       $production -- Compiles an optimized version of the library
-#       	       and disables code that checks for invariant
-#       	       conditions.
-#
-#       $profile    -- Compiles code with the `-pg' flag which
-#       	       produces a `gmon.out' file when the library
-#       	       runs. The gprof(1) command can read that file
-#       	       and produce detailed run-time statistics.
-#
-# If HDF5_MODE is undefined then we use the value 
-#
-#	$debug $warn -DH5F_LOW_DFLT=H5F_LOW_SEC2
-#
-
-# Unconditionally set the compiler to gcc since the following flags
-# only apply to that compiler.
-CC=gcc      
-
-warn="-Wall -Wshadow -Wpointer-arith -Wcast-qual -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs"
-
-profile="-pg"
-
-debug="-g -DH5AC_DEBUG -DH5B_DEBUG -DH5D_DEBUG -DH5F_DEBUG -DH5G_DEBUG -UH5O_DEBUG -DH5T_DEBUG -DH5F_OPT_SEEK=0 -fverbose-asm"
-
-production="-O3 -DNDEBUG -finline-functions -funroll-loops -malign-double -fomit-frame-pointer"
-
-default_mode='-ansi $debug $warn -DH5F_LOW_DFLT=H5F_LOW_SEC2'
-
-# Don't set CFLAGS if the user already did.
-if test -z "$CFLAGS"; then
-   CFLAGS="`eval echo ${HDF5_MODE:-$default_mode}`"
-   export CFLAGS
-fi
+. config/linux
diff --git a/config/hpux10.20 b/config/hpux10.20
index 46bf4ee..99d333b 100644
--- a/config/hpux10.20
+++ b/config/hpux10.20
@@ -1,6 +1,38 @@
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
-if test "x$CFLAGS" = "x"; then
-   CFLAGS="-Ae"
-fi
 
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+CFLAGS="$CFLAGS -Ae"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
diff --git a/config/irix6.2 b/config/irix6.2
index a1c55c4..1ec4f4b 100644
--- a/config/irix6.2
+++ b/config/irix6.2
@@ -1,6 +1,38 @@
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
-if test "x$CFLAGS" = "x"; then
-   CFLAGS="-ansi -n32"
-fi
 
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+CFLAGS="$CFLAGS -ansi -n32"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=-g
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=-O
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
diff --git a/config/irix64 b/config/irix64
index 95207fb..6c07765 100644
--- a/config/irix64
+++ b/config/irix64
@@ -1,27 +1,46 @@
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
+
+
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+# Always turn off these warnings:
+#    1174:  function declared but not used
+#    1429:  the `long long' type is not standard
+#    1209:  constant expressions
+#    1196:  __vfork() (this is an SGI config problem)
+#
+CFLAGS="$CFLAGS -fullwarn -ansi -64 -woff 1174,1429,1209,1196"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=-g
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=-O
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
 #!/bin/sh
-# Site configuration -- do not distribute this file.
 
-CC="cc -ansi -64"
-
-# -woff 1174	about function declared but not used
-# -woff 1429	about long long type non-standard
-# -woff 1209    about constant expressions
-# -woff 1196    about __vfork() being implicitly declared, config prob.
-warn="-fullwarn -woff 1174,1429,1209,1196"
-#warn="-woff 1174,1429,1209,1196"
-
-profile="-pg"
-
-debug="-g"
-
-#production="-O -DNDEBUG"
-
-default_mode='$debug $warn'
-
-RANLIB=:		# SGI needs not ranlib
-
-# Don't set CFLAGS if the user already did.
-if test -z "$CFLAGS"; then
-   CFLAGS="`eval echo ${HDF5_MODE:-$default_mode}`"
-   export CFLAGS
-fi
diff --git a/config/linux b/config/linux
index 78a9913..d17b5de 100644
--- a/config/linux
+++ b/config/linux
@@ -1,63 +1,38 @@
-#!/bin/sh
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
 
-# Based on the setting of environment variable `HDF5_MODE' we set the
-# compiler flags unless they're already set.  Its value can be one or
-# more of the following words (be sure to use single quotes when
-# setting its value or the dollar signs will be expanded as variables
-# too soon):
-#
-#	$warn	    -- Generates compiler warnings.  You should always
-#	               include this since it has no effect on the speed of
-#	               the code produced.
-#
-#	$debug      -- Compiles in code to check for invariant conditions
-#	               and turns on the `-g' flag for interactive
-#	               debugging.  It also turns off seek optimizations in
-#                      the low-level file driver.  This version of the
-#                      library can be significantly slower than a production
-#                      version.
-#
-#       $production -- Compiles an optimized version of the library
-#       	       and disables code that checks for invariant
-#       	       conditions.
-#
-#       $profile    -- Compiles code with the `-pg' flag which
-#       	       produces a `gmon.out' file when the library
-#       	       runs. The gprof(1) command can read that file
-#       	       and produce detailed run-time statistics.
-#
-# If HDF5_MODE is undefined then we use the value 
-#
-#	$debug $warn -DH5F_LOW_DFLT=H5F_LOW_SEC2
-#
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS="-g -fverbose-asm"
+DEBUG_CPPFLAGS="-DH5F_OPT_SEEK=0 -DH5F_LOW_DFLT=H5F_LOW_SEC2"
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS="-O3 -finline-functions -malign-double -fomit-frame-pointer"
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
 
-if [ arborea = `hostname` -a -z "$enable_parallel" ]; then
-    enable_parallel=mpio
-fi
-
-# The following flags only apply to the gcc compiler.
-CC=${CC:-gcc}
-
-# First set up the CFLAGS arguments.
-if test "X" = "X$CFLAGS"; then
-    warn="-Wall -Wshadow -Wpointer-arith -Wcast-qual -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs"
-    profile="-pg"
-    debug="-g -fverbose-asm"
-    production="-O3 -finline-functions -funroll-loops -malign-double -fomit-frame-pointer"
-    parallel=""
-    default_mode='-ansi $debug $warn $parallel'
-    CFLAGS="`eval echo ${HDF5_MODE:-$default_mode}`"
-fi
-
-# Then set up the CPPFLAGS arguments.
-if test "X" = "X$CPPFLAGS"; then
-    warn=
-    profile=
-    debug="-DH5AC_DEBUG -DH5B_DEBUG -DH5D_DEBUG -DH5F_DEBUG -DH5G_DEBUG -UH5O_DEBUG -DH5T_DEBUG -DH5F_OPT_SEEK=0 -DH5F_LOW_DFLT=H5F_LOW_SEC2"
-    production="-DNDEBUG"
-    parallel=""
-    default_mode='$debug $warn $parallel'
-    CPPFLAGS="`eval echo ${HDF5_MODE:-$default_mode}`"
-fi
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
diff --git a/config/powerpc-ibm-aix4.2.1.0 b/config/powerpc-ibm-aix4.2.1.0
index e5e8738..522f50b 100644
--- a/config/powerpc-ibm-aix4.2.1.0
+++ b/config/powerpc-ibm-aix4.2.1.0
@@ -1 +1,39 @@
-ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}  # or 'no'
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
+
+
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+#CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
+
diff --git a/config/rs6000-ibm-aix4.1.4.0 b/config/rs6000-ibm-aix4.1.4.0
index e5e8738..522f50b 100644
--- a/config/rs6000-ibm-aix4.1.4.0
+++ b/config/rs6000-ibm-aix4.1.4.0
@@ -1 +1,39 @@
-ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}  # or 'no'
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
+
+
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# What must *always* be present for things to compile correctly?
+#CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
+
diff --git a/config/solaris2.5 b/config/solaris2.5
index 87dd710..581415e 100644
--- a/config/solaris2.5
+++ b/config/solaris2.5
@@ -1,6 +1,41 @@
-# Site configuration -- do not distribute this file.
+#							-*- shell-script -*-
+#
+# This file is part of the HDF5 build script.  It is processed shortly
+# after configure starts and defines, among other things, flags for
+# the various compile modes.
 
-if test "x$CFLAGS" = "x"; then
-   CFLAGS="-Wall -g -O2"
-fi
 
+#----------------------------------------------------------------------------
+# Compiler flags. The CPPFLAGS values should not include package debug
+# flags like `-DH5G_DEBUG' since these are added with the
+# `--enable-debug' switch of configure.
+
+# We can only use gcc
+CC=gcc
+
+# What must *always* be present for things to compile correctly?
+CFLAGS="$CFLAGS -ansi"
+#CPPFLAGS="$CPPFLAGS -I."
+
+# What compiler flags should be used for code development?
+DEBUG_CFLAGS=-g
+DEBUG_CPPFLAGS=
+
+# What compiler flags should be used for building a production
+# library?
+PROD_CFLAGS=-O2
+PROD_CPPFLAGS=
+
+# What compiler flags enable code profiling?
+PROFILE_CFLAGS=-pg
+PROFILE_CPPFLAGS=
+
+
+#----------------------------------------------------------------------------
+# Values for overriding configuration tests when cross compiling.
+# This includes compiling on some machines where the serial front end
+# compiles for a parallel back end.
+
+# Set this to `yes' or `no' depending on whether the target is big
+# endian or little endian.
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}