Merge 8.6

8 files changed, 490 insertions, 417 deletions

diff --git a/unix/Makefile.in b/unix/Makefile.in
index cf7baec..f3c3563 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -87,7 +87,7 @@ HTML_INSTALL_DIR	= $(INSTALL_ROOT)$(HTML_DIR)
 CONFIG_INSTALL_DIR	= $(INSTALL_ROOT)$(libdir)
 
 # Directory in which to install bundled packages:
-PACKAGE_DIR             = @PACKAGE_DIR@
+PACKAGE_DIR		= @PACKAGE_DIR@
 
 # Package search path.
 TCL_PACKAGE_PATH	= @TCL_PACKAGE_PATH@
@@ -150,8 +150,8 @@ SHELL			= @MAKEFILE_SHELL@
 # around; better to use the install-sh script that comes with the
 # distribution, which is slower but guaranteed to work.
 
-INSTALL_STRIP_PROGRAM   = -s
-INSTALL_STRIP_LIBRARY   = -S -x
+INSTALL_STRIP_PROGRAM	= -s
+INSTALL_STRIP_LIBRARY	= -S -x
 
 INSTALL			= $(SHELL) $(UNIX_DIR)/install-sh -c
 INSTALL_PROGRAM		= ${INSTALL}
@@ -227,7 +227,6 @@ SRC_DIR			= @srcdir@
 TOP_DIR			= @TCL_SRC_DIR@
 BUILD_DIR		= @builddir@
 GENERIC_DIR		= $(TOP_DIR)/generic
-TOMMATH_DIR		= $(TOP_DIR)/libtommath
 COMPAT_DIR		= $(TOP_DIR)/compat
 TOOL_DIR		= $(TOP_DIR)/tools
 UNIX_DIR		= $(TOP_DIR)/unix
@@ -240,13 +239,14 @@ TCL_BUILDTIME_LIBRARY	= @TCL_SRC_DIR@/library
 
 ZLIB_DIR		= ${COMPAT_DIR}/zlib
 ZLIB_INCLUDE		= @ZLIB_INCLUDE@
+TOMMATH_DIR		= $(TOP_DIR)/libtommath
 
 CC			= @CC@
 #CC			= purify -best-effort @CC@ -DPURIFY
 
 # Flags to be passed to installManPage to control how the manpages should be
 # installed (symlinks, compression, package name suffix).
-MAN_FLAGS               = @MAN_FLAGS@
+MAN_FLAGS		= @MAN_FLAGS@
 
 # If non-empty, install the timezone files that are included with Tcl,
 # otherwise use the ones that ship with the OS.
@@ -263,17 +263,18 @@ TRACE			= strace
 TRACE_OPTS		=
 VALGRIND		= valgrind
 VALGRINDARGS		= --tool=memcheck --num-callers=24 \
-    --leak-resolution=high --leak-check=yes --show-reachable=yes -v \
-    --suppressions=$(TOOL_DIR)/valgrind_suppress
+	--leak-resolution=high --leak-check=yes --show-reachable=yes -v \
+	--suppressions=$(TOOL_DIR)/valgrind_suppress
 
 #--------------------------------------------------------------------------
 # The information below should be usable as is. The configure script won't
 # modify it and you shouldn't need to modify it either.
 #--------------------------------------------------------------------------
 
-STUB_CC_SWITCHES = ${CFLAGS} ${CFLAGS_WARNING} ${SHLIB_CFLAGS} \
--I"${BUILD_DIR}" -I${UNIX_DIR} -I${GENERIC_DIR} -I${TOMMATH_DIR} \
-${AC_FLAGS} ${ENV_FLAGS} ${EXTRA_CFLAGS} @EXTRA_CC_SWITCHES@
+STUB_CC_SWITCHES = -I"${BUILD_DIR}" -I${UNIX_DIR} -I${GENERIC_DIR} -I${TOMMATH_DIR} \
+	${CFLAGS} ${CFLAGS_WARNING} ${SHLIB_CFLAGS} \
+	${AC_FLAGS} ${ENV_FLAGS} ${EXTRA_CFLAGS} \
+	@EXTRA_CC_SWITCHES@
 
 CC_SWITCHES = $(STUB_CC_SWITCHES) ${NO_DEPRECATED_FLAGS} -DMP_FIXED_CUTOFFS -DMP_NO_STDINT
 
@@ -282,7 +283,7 @@ APP_CC_SWITCHES = $(CC_SWITCHES) @EXTRA_APP_CC_SWITCHES@
 LIBS		= @TCL_LIBS@
 
 DEPEND_SWITCHES	= ${CFLAGS} -I${UNIX_DIR} -I${GENERIC_DIR} \
-${AC_FLAGS} ${EXTRA_CFLAGS} @EXTRA_CC_SWITCHES@
+	${AC_FLAGS} ${EXTRA_CFLAGS} @EXTRA_CC_SWITCHES@
 
 TCLSH_OBJS = tclAppInit.o
 
@@ -756,13 +757,14 @@ Makefile: $(UNIX_DIR)/Makefile.in $(DLTEST_DIR)/Makefile.in
 
 clean: clean-packages
 	rm -rf *.a *.o libtcl* core errs *~ \#* TAGS *.E a.out \
-		errors ${TCL_EXE} ${TCLTEST_EXE} lib.exp Tcl @DTRACE_HDR@
-	cd dltest ; $(MAKE) clean
+		errors ${TCL_EXE} ${TCLTEST_EXE} lib.exp Tcl @DTRACE_HDR@ \
+		*.zip *.vfs
+	(cd dltest ; $(MAKE) clean)
 
 distclean: distclean-packages clean
 	rm -rf Makefile config.status config.cache config.log tclConfig.sh \
 		tclConfig.h *.plist Tcl.framework tcl.pc
-	cd dltest ; $(MAKE) distclean
+	(cd dltest ; $(MAKE) distclean)
 
 depend:
 	makedepend -- $(DEPEND_SWITCHES) -- $(SRCS)
@@ -851,7 +853,9 @@ gdb: ${TCL_EXE}
 	$(SHELL_ENV) $(GDB) ./${TCL_EXE}
 
 valgrind: ${TCL_EXE} ${TCLTEST_EXE}
-	$(SHELL_ENV) $(VALGRIND) $(VALGRINDARGS) ./${TCLTEST_EXE} $(TOP_DIR)/tests/all.tcl -singleproc 1 -constraints valgrind $(TESTFLAGS)
+	$(SHELL_ENV) $(VALGRIND) $(VALGRINDARGS) ./${TCLTEST_EXE} \
+		$(TOP_DIR)/tests/all.tcl -singleproc 1 -constraints valgrind \
+		$(TESTFLAGS)
 
 valgrindshell: ${TCL_EXE}
 	$(SHELL_ENV) $(VALGRIND) $(VALGRINDARGS) ./${TCL_EXE} $(SCRIPT)
@@ -883,14 +887,12 @@ install-strip:
 
 install-binaries: binaries
 	@for i in "$(LIB_INSTALL_DIR)" "$(BIN_INSTALL_DIR)" \
-		"$(CONFIG_INSTALL_DIR)"; \
-	    do \
+		"$(CONFIG_INSTALL_DIR)" ; do \
 	    if [ ! -d "$$i" ] ; then \
 		echo "Making directory $$i"; \
 		$(INSTALL_DATA_DIR) "$$i"; \
-		else true; \
-		fi; \
-	    done;
+	    fi; \
+	done
 	@echo "Installing $(LIB_FILE) to $(DLL_INSTALL_DIR)/"
 	@@INSTALL_LIB@
 	@chmod 555 "$(DLL_INSTALL_DIR)/$(LIB_FILE)"
@@ -927,7 +929,7 @@ install-libraries: libraries
 		else true; \
 		fi; \
 	    done;
-	@for i in 8.4  8.4/platform 8.5 8.6; \
+	@for i in 8.4 8.4/platform 8.5 8.6; \
 	    do \
 	    if [ ! -d "$(MODULE_INSTALL_DIR)/$$i" ] ; then \
 		echo "Making directory $(MODULE_INSTALL_DIR)/$$i"; \
@@ -945,57 +947,56 @@ install-libraries: libraries
 	@for i in $(TOP_DIR)/library/http1.0/*.tcl ; \
 	    do \
 	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/http1.0"; \
-	    done;
+	    done
 	@echo "Installing package http 2.9.5 as a Tcl Module";
-	@$(INSTALL_DATA) $(TOP_DIR)/library/http/http.tcl "$(MODULE_INSTALL_DIR)/8.6/http-2.9.5.tm";
+	@$(INSTALL_DATA) $(TOP_DIR)/library/http/http.tcl "$(MODULE_INSTALL_DIR)/8.6/http-2.9.5.tm"
 	@echo "Installing package opt0.4 files to $(SCRIPT_INSTALL_DIR)/opt0.4/";
-	@for i in $(TOP_DIR)/library/opt/*.tcl ; \
-	    do \
+	@for i in $(TOP_DIR)/library/opt/*.tcl; do \
 	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/opt0.4"; \
-	    done;
-	@echo "Installing package msgcat 1.6.1 as a Tcl Module";
-	@$(INSTALL_DATA) $(TOP_DIR)/library/msgcat/msgcat.tcl "$(MODULE_INSTALL_DIR)/8.5/msgcat-1.6.1.tm";
-	@echo "Installing package tcltest 2.5.3 as a Tcl Module";
-	@$(INSTALL_DATA) $(TOP_DIR)/library/tcltest/tcltest.tcl "$(MODULE_INSTALL_DIR)/8.5/tcltest-2.5.3.tm";
-
-	@echo "Installing package platform 1.0.14 as a Tcl Module";
-	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/platform.tcl "$(MODULE_INSTALL_DIR)/8.4/platform-1.0.14.tm";
-	@echo "Installing package platform::shell 1.1.4 as a Tcl Module";
-	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/shell.tcl "$(MODULE_INSTALL_DIR)/8.4/platform/shell-1.1.4.tm";
-
-	@echo "Installing encoding files to $(SCRIPT_INSTALL_DIR)/encoding/";
-	@for i in $(TOP_DIR)/library/encoding/*.enc ; do \
+	done
+	@echo "Installing package msgcat 1.6.1 as a Tcl Module"
+	@$(INSTALL_DATA) $(TOP_DIR)/library/msgcat/msgcat.tcl \
+		"$(MODULE_INSTALL_DIR)/8.5/msgcat-1.6.1.tm"
+	@echo "Installing package tcltest 2.5.3 as a Tcl Module"
+	@$(INSTALL_DATA) $(TOP_DIR)/library/tcltest/tcltest.tcl \
+		"$(MODULE_INSTALL_DIR)/8.5/tcltest-2.5.3.tm"
+	@echo "Installing package platform 1.0.17 as a Tcl Module"
+	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/platform.tcl \
+		"$(MODULE_INSTALL_DIR)/8.4/platform-1.0.17.tm"
+	@echo "Installing package platform::shell 1.1.4 as a Tcl Module"
+	@$(INSTALL_DATA) $(TOP_DIR)/library/platform/shell.tcl \
+		"$(MODULE_INSTALL_DIR)/8.4/platform/shell-1.1.4.tm"
+	@echo "Installing encoding files to $(SCRIPT_INSTALL_DIR)/encoding/"
+	@for i in $(TOP_DIR)/library/encoding/*.enc; do \
 		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/encoding"; \
-	done;
-	@if [ -n "$(TCL_MODULE_PATH)" -a -f $(TOP_DIR)/library/tm.tcl ]; then \
+	done
+	@if [ -n "$(TCL_MODULE_PATH)" -a -f $(TOP_DIR)/library/tm.tcl ] ; then \
 	    echo "Customizing tcl module path"; \
 	    echo "if {![interp issafe]} { ::tcl::tm::roots {$(TCL_MODULE_PATH)} }" >> \
 	        "$(SCRIPT_INSTALL_DIR)/tm.tcl"; \
 	fi
 
 install-tzdata:
-	@for i in tzdata; \
-	    do \
+	@for i in tzdata; do \
 	    if [ ! -d "$(SCRIPT_INSTALL_DIR)/$$i" ] ; then \
 		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
 		$(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)/$$i"; \
-		else true; \
-		fi; \
-	    done;
+	    fi; \
+	done
 	@echo "Installing time zone files to $(SCRIPT_INSTALL_DIR)/tzdata/"
-	@for i in $(TOP_DIR)/library/tzdata/* ; do \
+	@for i in $(TOP_DIR)/library/tzdata/*; do \
 	    if [ -d $$i ] ; then \
 		ii=`basename $$i`; \
 		if [ ! -d "$(SCRIPT_INSTALL_DIR)/tzdata/$$ii" ] ; then \
 		    $(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)/tzdata/$$ii"; \
 		fi; \
-		for j in $$i/* ; do \
+		for j in $$i/*; do \
 		    if [ -d $$j ] ; then \
 			jj=`basename $$j`; \
 			if [ ! -d "$(SCRIPT_INSTALL_DIR)/tzdata/$$ii/$$jj" ] ; then \
 			    $(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)/tzdata/$$ii/$$jj"; \
 			fi; \
-			for k in $$j/* ; do \
+			for k in $$j/*; do \
 			    $(INSTALL_DATA) $$k "$(SCRIPT_INSTALL_DIR)/tzdata/$$ii/$$jj"; \
 			done; \
 		    else \
@@ -1005,55 +1006,47 @@ install-tzdata:
 	    else \
 		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/tzdata"; \
 	    fi; \
-	done;
+	done
 
 install-msgs:
-	@for i in msgs; \
-	    do \
+	@for i in msgs; do \
 	    if [ ! -d "$(SCRIPT_INSTALL_DIR)/$$i" ] ; then \
 		echo "Making directory $(SCRIPT_INSTALL_DIR)/$$i"; \
 		$(INSTALL_DATA_DIR) "$(SCRIPT_INSTALL_DIR)/$$i"; \
-		else true; \
-		fi; \
-	    done;
+	    fi; \
+	done
 	@echo "Installing message catalog files to $(SCRIPT_INSTALL_DIR)/msgs/"
-	@for i in $(TOP_DIR)/library/msgs/*.msg ; do \
-		$(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/msgs"; \
-	done;
+	@for i in $(TOP_DIR)/library/msgs/*.msg; do \
+	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)/msgs"; \
+	done
 
 install-doc: doc
-	@for i in "$(MAN_INSTALL_DIR)" "$(MAN1_INSTALL_DIR)" "$(MAN3_INSTALL_DIR)" "$(MANN_INSTALL_DIR)" ; \
-	    do \
+	@for i in "$(MAN_INSTALL_DIR)" "$(MAN1_INSTALL_DIR)" "$(MAN3_INSTALL_DIR)" "$(MANN_INSTALL_DIR)"; do \
 	    if [ ! -d "$$i" ] ; then \
 		echo "Making directory $$i"; \
 		$(INSTALL_DATA_DIR) "$$i"; \
-		else true; \
-		fi; \
-	    done;
-	@echo "Installing and cross-linking top-level (.1) docs to $(MAN1_INSTALL_DIR)/";
+	    fi; \
+	done
+	@echo "Installing and cross-linking top-level (.1) docs to $(MAN1_INSTALL_DIR)/"
 	@for i in $(TOP_DIR)/doc/*.1; do \
 	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MAN1_INSTALL_DIR)"; \
 	done
-
-	@echo "Installing and cross-linking C API (.3) docs to $(MAN3_INSTALL_DIR)/";
+	@echo "Installing and cross-linking C API (.3) docs to $(MAN3_INSTALL_DIR)/"
 	@for i in $(TOP_DIR)/doc/*.3; do \
 	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MAN3_INSTALL_DIR)"; \
 	done
-
 	@echo "Installing and cross-linking command (.n) docs to $(MANN_INSTALL_DIR)/";
 	@for i in $(TOP_DIR)/doc/*.n; do \
 	    $(SHELL) $(UNIX_DIR)/installManPage $(MAN_FLAGS) $$i "$(MANN_INSTALL_DIR)"; \
 	done
 
 install-headers:
-	@for i in "$(INCLUDE_INSTALL_DIR)"; \
-	    do \
+	@for i in "$(INCLUDE_INSTALL_DIR)"; do \
 	    if [ ! -d "$$i" ] ; then \
 		echo "Making directory $$i"; \
 		$(INSTALL_DATA_DIR) "$$i"; \
-		else true; \
-		fi; \
-	    done;
+	    fi; \
+	done
 	@echo "Installing header files to $(INCLUDE_INSTALL_DIR)/";
 	@for i in $(GENERIC_DIR)/tcl.h $(GENERIC_DIR)/tclDecls.h \
 		$(GENERIC_DIR)/tclOO.h $(GENERIC_DIR)/tclOODecls.h \
@@ -1062,18 +1055,16 @@ install-headers:
 		$(GENERIC_DIR)/tclTomMathDecls.h ; \
 	    do \
 	    $(INSTALL_DATA) $$i "$(INCLUDE_INSTALL_DIR)"; \
-	    done;
+	done
 
 # Optional target to install private headers
 install-private-headers:
-	@for i in "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
-	    do \
+	@for i in "$(PRIVATE_INCLUDE_INSTALL_DIR)"; do \
 	    if [ ! -d "$$i" ] ; then \
 		echo "Making directory $$i"; \
 		$(INSTALL_DATA_DIR) "$$i"; \
-		else true; \
-		fi; \
-	    done;
+	    fi; \
+	done
 	@echo "Installing private header files to $(PRIVATE_INCLUDE_INSTALL_DIR)/";
 	@for i in $(GENERIC_DIR)/tclInt.h $(GENERIC_DIR)/tclIntDecls.h \
 		$(GENERIC_DIR)/tclIntPlatDecls.h $(GENERIC_DIR)/tclPort.h \
@@ -1081,10 +1072,10 @@ install-private-headers:
 		$(UNIX_DIR)/tclUnixPort.h; \
 	    do \
 	    $(INSTALL_DATA) $$i "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
-	    done;
+	done
 	@if test -f tclConfig.h; then\
 	    $(INSTALL_DATA) tclConfig.h "$(PRIVATE_INCLUDE_INSTALL_DIR)"; \
-	    fi;
+	fi
 
 #--------------------------------------------------------------------------
 # Rules for how to compile C files
@@ -1103,42 +1094,45 @@ tclTestInit.o: $(UNIX_DIR)/tclAppInit.c ${TCL_EXE}
 	@if test -f tclAppInit.o ; then \
 	    rm -f tclAppInit.sav; \
 	    mv tclAppInit.o tclAppInit.sav; \
-	fi;
+	fi
 	$(CC) -c $(APP_CC_SWITCHES) \
 		-DTCL_BUILDTIME_LIBRARY="\"${TCL_BUILDTIME_LIBRARY}\"" \
 		-DTCL_TEST $(UNIX_DIR)/tclAppInit.c
-	rm -f tclTestInit.o
+	@rm -f tclTestInit.o
 	mv tclAppInit.o tclTestInit.o
 	@if test -f tclAppInit.sav ; then \
 	    mv tclAppInit.sav tclAppInit.o; \
-	fi;
+	fi
 
 xtTestInit.o: $(UNIX_DIR)/tclAppInit.c ${TCL_EXE}
 	@if test -f tclAppInit.o ; then \
 	    rm -f tclAppInit.sav; \
 	    mv tclAppInit.o tclAppInit.sav; \
-	fi;
+	fi
 	$(CC) -c $(APP_CC_SWITCHES) \
 		-DTCL_BUILDTIME_LIBRARY="\"${TCL_BUILDTIME_LIBRARY}\"" \
 		-DTCL_TEST -DTCL_XT_TEST $(UNIX_DIR)/tclAppInit.c
-	rm -f xtTestInit.o
+	@rm -f xtTestInit.o
 	mv tclAppInit.o xtTestInit.o
 	@if test -f tclAppInit.sav ; then \
 	    mv tclAppInit.sav tclAppInit.o; \
-	fi;
+	fi
 
 # Object files used on all Unix systems:
 
-REGHDRS=$(GENERIC_DIR)/regex.h $(GENERIC_DIR)/regguts.h \
-		$(GENERIC_DIR)/regcustom.h
-TCLREHDRS=$(GENERIC_DIR)/tclRegexp.h
-COMPILEHDR=$(GENERIC_DIR)/tclCompile.h
-FSHDR=$(GENERIC_DIR)/tclFileSystem.h
-IOHDR=$(GENERIC_DIR)/tclIO.h
-MATHHDRS=$(GENERIC_DIR)/tommath.h $(GENERIC_DIR)/tclTomMath.h
-PARSEHDR=$(GENERIC_DIR)/tclParse.h
-NREHDR=$(GENERIC_DIR)/tclInt.h
-TRIMHDR=$(GENERIC_DIR)/tclStringTrim.h
+REGHDRS		= $(GENERIC_DIR)/regex.h $(GENERIC_DIR)/regguts.h \
+	$(GENERIC_DIR)/regcustom.h
+TCLREHDRS	= $(GENERIC_DIR)/tclRegexp.h
+COMPILEHDR	= $(GENERIC_DIR)/tclCompile.h
+FSHDR		= $(GENERIC_DIR)/tclFileSystem.h
+IOHDR		= $(GENERIC_DIR)/tclIO.h
+MATHHDRS	= $(GENERIC_DIR)/tclTomMath.h $(GENERIC_DIR)/tommath.h
+PARSEHDR	= $(GENERIC_DIR)/tclParse.h
+NREHDR		= $(GENERIC_DIR)/tclInt.h
+TRIMHDR		= $(GENERIC_DIR)/tclStringTrim.h
+
+TCL_LOCATIONS	= -DTCL_LIBRARY="\"${TCL_LIBRARY}\"" \
+	-DTCL_PACKAGE_PATH="\"${TCL_PACKAGE_PATH}\""
 TCLDATEHDR=$(GENERIC_DIR)/tclDate.h $(GENERIC_DIR)/tclStrIdxTree.h
 
 regcomp.o: $(REGHDRS) $(GENERIC_DIR)/regcomp.c $(GENERIC_DIR)/regc_lex.c \
@@ -1371,19 +1365,19 @@ tclPkg.o: $(GENERIC_DIR)/tclPkg.c
 # prefix/exec_prefix but all the different paths individually.
 
 tclPkgConfig.o: $(GENERIC_DIR)/tclPkgConfig.c
-	$(CC) -c $(CC_SWITCHES)					\
+	$(CC) -c $(CC_SWITCHES) \
 		-DCFG_INSTALL_LIBDIR="\"$(LIB_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_BINDIR="\"$(BIN_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_SCRDIR="\"$(SCRIPT_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_INCDIR="\"$(INCLUDE_INSTALL_DIR)\"" \
 		-DCFG_INSTALL_DOCDIR="\"$(MAN_INSTALL_DIR)\"" \
-		\
 		-DCFG_RUNTIME_LIBDIR="\"$(libdir)\"" \
 		-DCFG_RUNTIME_BINDIR="\"$(bindir)\"" \
 		-DCFG_RUNTIME_SCRDIR="\"$(TCL_LIBRARY)\"" \
 		-DCFG_RUNTIME_INCDIR="\"$(includedir)\"" \
 		-DCFG_RUNTIME_DOCDIR="\"$(mandir)\"" \
-		\
+		-DCFG_RUNTIME_DLLFILE="\"$(TCL_LIB_FILE)\"" \
+		-DCFG_RUNTIME_ZIPFILE="\"$(TCL_ZIP_FILE)\"" \
 		$(GENERIC_DIR)/tclPkgConfig.c
 
 tclPosixStr.o: $(GENERIC_DIR)/tclPosixStr.c
@@ -1680,7 +1674,6 @@ tclUnixThrd.o: $(UNIX_DIR)/tclUnixThrd.c
 tclUnixTime.o: $(UNIX_DIR)/tclUnixTime.c
 	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclUnixTime.c
 
-TCL_LOCATIONS=-DTCL_LIBRARY="\"${TCL_LIBRARY}\"" -DTCL_PACKAGE_PATH="\"${TCL_PACKAGE_PATH}\""
 tclUnixInit.o: $(UNIX_DIR)/tclUnixInit.c tclConfig.sh
 	$(CC) -c $(CC_SWITCHES) $(TCL_LOCATIONS) $(UNIX_DIR)/tclUnixInit.c
 
@@ -1794,13 +1787,13 @@ Zzutil.o:    $(ZLIB_DIR)/zutil.c
 #--------------------------------------------------------------------------
 
 tclStubLib.o: $(GENERIC_DIR)/tclStubLib.c
-	$(CC) -c $(STUB_CC_SWITCHES) -DSTATIC_BUILD $(GENERIC_DIR)/tclStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) -DSTATIC_BUILD @CFLAGS_NOLTO@ $(GENERIC_DIR)/tclStubLib.c
 
 tclTomMathStubLib.o: $(GENERIC_DIR)/tclTomMathStubLib.c
-	$(CC) -c $(STUB_CC_SWITCHES) $(GENERIC_DIR)/tclTomMathStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) @CFLAGS_NOLTO@ $(GENERIC_DIR)/tclTomMathStubLib.c
 
 tclOOStubLib.o: $(GENERIC_DIR)/tclOOStubLib.c
-	$(CC) -c $(STUB_CC_SWITCHES) $(GENERIC_DIR)/tclOOStubLib.c
+	$(CC) -c $(STUB_CC_SWITCHES) @CFLAGS_NOLTO@ $(GENERIC_DIR)/tclOOStubLib.c
 
 .c.o:
 	$(CC) -c $(CC_SWITCHES) $<
@@ -1819,79 +1812,79 @@ PKG_DIR			= ./pkgs
 
 configure-packages:
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    if [ -x $$i/configure ]; then \
-	      pkg=`basename $$i`; \
-	      echo "Configuring package '$$pkg'"; \
-	      mkdir -p $(PKG_DIR)/$$pkg; \
-	      if [ ! -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-		( cd $(PKG_DIR)/$$pkg; \
-		  $$i/configure --with-tcl=../.. \
-		      --with-tclinclude=$(GENERIC_DIR) \
-		      $(PKG_CFG_ARGS) --libdir=$(PACKAGE_DIR) \
-		      --enable-shared --enable-threads; ) || exit $$?; \
-	      fi; \
+	    if [ -d $$i ] ; then \
+		if [ -x $$i/configure ] ; then \
+		    pkg=`basename $$i`; \
+		    echo "Configuring package '$$pkg'"; \
+		    mkdir -p $(PKG_DIR)/$$pkg; \
+		    if [ ! -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+			( cd $(PKG_DIR)/$$pkg; \
+			  $$i/configure --with-tcl=../.. \
+			      --with-tclinclude=$(GENERIC_DIR) \
+			      $(PKG_CFG_ARGS) --libdir=$(PACKAGE_DIR) \
+			      --enable-shared --enable-threads; ) || exit $$?; \
+		    fi; \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 packages: configure-packages ${STUB_LIB_FILE}
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      echo "Building package '$$pkg'"; \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE); ) || exit $$?; \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    echo "Building package '$$pkg'"; \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE); ) || exit $$?; \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 install-packages: packages
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      echo "Installing package '$$pkg'"; \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) install \
-		  "DESTDIR=$(INSTALL_ROOT)"; ) || exit $$?; \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    echo "Installing package '$$pkg'"; \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE) install \
+			  "DESTDIR=$(INSTALL_ROOT)"; ) || exit $$?; \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 test-packages: ${TCLTEST_EXE} packages
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      echo "Testing package '$$pkg'"; \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) \
-		  "@LD_LIBRARY_PATH_VAR@=../..:$${@LD_LIBRARY_PATH_VAR@}" \
-		  "TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" \
-		  "TCLLIBPATH=../../pkgs" test \
-		  "TCLSH_PROG=../../${TCLTEST_EXE}"; ) \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    echo "Testing package '$$pkg'"; \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE) \
+			  "@LD_LIBRARY_PATH_VAR@=../..:$${@LD_LIBRARY_PATH_VAR@}" \
+			  "TCL_LIBRARY=${TCL_BUILDTIME_LIBRARY}" \
+			  "TCLLIBPATH=../../pkgs" test \
+			  "TCLSH_PROG=../../${TCLTEST_EXE}"; ) \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 clean-packages:
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) clean; ) \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE) clean; ) \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 distclean-packages:
 	@for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) distclean; ) \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE) distclean; ) \
+		fi; \
+		rm -rf $(PKG_DIR)/$$pkg; \
 	    fi; \
-	    rm -rf $(PKG_DIR)/$$pkg; \
-	  fi; \
 	done; \
 	rm -rf $(PKG_DIR)
 
@@ -1899,13 +1892,13 @@ dist-packages: configure-packages
 	@rm -rf $(DISTROOT)/pkgs; \
 	mkdir -p $(DISTROOT)/pkgs; \
 	for i in $(PKGS_DIR)/*; do \
-	  if [ -d $$i ]; then \
-	    pkg=`basename $$i`; \
-	    if [ -f $(PKG_DIR)/$$pkg/Makefile ]; then \
-	      ( cd $(PKG_DIR)/$$pkg; $(MAKE) dist \
-		  "DIST_ROOT=$(DISTROOT)/pkgs"; ) || exit $$?; \
+	    if [ -d $$i ] ; then \
+		pkg=`basename $$i`; \
+		if [ -f $(PKG_DIR)/$$pkg/Makefile ] ; then \
+		    ( cd $(PKG_DIR)/$$pkg; $(MAKE) dist \
+			  "DIST_ROOT=$(DISTROOT)/pkgs"; ) || exit $$?; \
+		fi; \
 	    fi; \
-	  fi; \
 	done
 
 #--------------------------------------------------------------------------
@@ -1920,9 +1913,9 @@ dist-packages: configure-packages
 
 gendate:
 	bison --output-file=$(GENERIC_DIR)/tclDate.c \
-	--no-lines \
-	--name-prefix=TclDate \
-	$(GENERIC_DIR)/tclGetDate.y
+		--no-lines \
+		--name-prefix=TclDate \
+		$(GENERIC_DIR)/tclGetDate.y
 
 #	yacc -l $(GENERIC_DIR)/tclGetDate.y
 #	sed -e 's/yy/TclDate/g' -e '/^#include <values.h>/d' \
@@ -1973,14 +1966,16 @@ genstubs:
 checkstubs: $(TCL_LIB_FILE)
 	-@for i in `nm -p $(TCL_LIB_FILE) \
 		| awk '$$2 ~ /^[TDBCS]$$/ { sub("^_", "", $$3); print $$3 }' \
-		| sort -n`; do \
-		match=0; \
-		for j in $(TCL_DECLS); do \
-		    if [ `grep -c "$$i *(" $$j` -gt 0 ]; then \
-			match=1; \
-		    fi; \
-		done; \
-		if [ $$match -eq 0 ]; then echo $$i; fi \
+		| sort -n` ; do \
+	    match=0; \
+	    for j in $(TCL_DECLS); do \
+		if [ `grep -c "$$i *(" $$j` -gt 0 ] ; then \
+		    match=1; \
+		fi; \
+	    done; \
+	    if [ $$match -eq 0 ] ; then \
+		echo $$i; \
+	    fi; \
 	done
 
 #
@@ -1991,13 +1986,15 @@ checkstubs: $(TCL_LIB_FILE)
 checkdoc: $(TCL_LIB_FILE)
 	-@for i in `nm -p $(TCL_LIB_FILE) | awk '$$3 ~ /Tcl_/ { print $$3 }' \
 		| grep -v 'Cmd$$' | sort -n`; do \
-		match=0; \
-		for j in $(TOP_DIR)/doc/*.3; do \
-		    if [ `grep '\-' $$j | grep -c $$i` -gt 0 ]; then \
-			match=1; \
-		    fi; \
-		done; \
-		if [ $$match -eq 0 ]; then echo $$i; fi \
+	    match=0; \
+	    for j in $(TOP_DIR)/doc/*.3; do \
+		if [ `grep '\-' $$j | grep -c $$i` -gt 0 ]; then \
+		    match=1; \
+		fi; \
+	    done; \
+	    if [ $$match -eq 0 ]; then \
+		echo $$i; \
+	    fi; \
 	done
 
 #
@@ -2005,7 +2002,7 @@ checkdoc: $(TCL_LIB_FILE)
 #
 
 checkuchar:
-	-egrep isalnum\|isalpha\|iscntrl\|isdigit\|islower\|isprint\|ispunct\|isspace\|isupper\|isxdigit\|toupper\|tolower $(SRCS) | grep -v UCHAR
+	-@egrep isalnum\|isalpha\|iscntrl\|isdigit\|islower\|isprint\|ispunct\|isspace\|isupper\|isxdigit\|toupper\|tolower $(SRCS) | grep -v UCHAR
 
 #
 # Target to make sure that only symbols with "Tcl" prefixes are exported.
@@ -2025,15 +2022,18 @@ checkexports: $(TCL_LIB_FILE)
 # system.
 #
 
+RPM_PLATFORMS = i386
 rpm: all
-	rm -f THIS.TCL.SPEC
+	-@rm -f THIS.TCL.SPEC
 	echo "%define _builddir `pwd`" > THIS.TCL.SPEC
 	echo "%define _rpmdir `pwd`/RPMS" >> THIS.TCL.SPEC
 	cat tcl.spec >> THIS.TCL.SPEC
-	mkdir -p RPMS/i386
-	rpmbuild -bb THIS.TCL.SPEC
-	mv RPMS/i386/*.rpm .
-	rm -rf RPMS THIS.TCL.SPEC
+	for platform in $(RPM_PLATFORMS); do \
+	    mkdir -p RPMS/$$platform && \
+	    rpmbuild -bb THIS.TCL.SPEC && \
+	    mv RPMS/$$platform/*.rpm .; \
+	done
+	-rm -rf RPMS THIS.TCL.SPEC
 
 #
 # Target to create a proper Tcl distribution from information in the
@@ -2062,16 +2062,16 @@ dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(M
 	mkdir -p $(DISTDIR)/unix
 	cp -p $(TOP_DIR)/manifest.uuid $(DISTDIR)
 	cp -p $(UNIX_DIR)/*.[ch] $(DISTDIR)/unix
-	cp $(UNIX_DIR)/Makefile.in $(DISTDIR)/unix
+	cp -p $(UNIX_DIR)/Makefile.in $(DISTDIR)/unix
 	chmod 664 $(DISTDIR)/unix/Makefile.in
-	cp $(UNIX_DIR)/configure $(UNIX_DIR)/configure.in \
+	cp -p $(UNIX_DIR)/configure $(UNIX_DIR)/configure.in \
 		$(UNIX_DIR)/tcl.m4 $(UNIX_DIR)/aclocal.m4 \
 		$(UNIX_DIR)/tclConfig.sh.in $(UNIX_DIR)/tclooConfig.sh \
 		$(UNIX_DIR)/install-sh \
 		$(UNIX_DIR)/README $(UNIX_DIR)/ldAix $(UNIX_DIR)/tcl.spec \
 		$(UNIX_DIR)/installManPage $(UNIX_DIR)/tclConfig.h.in \
 		$(UNIX_DIR)/tcl.pc.in $(DISTDIR)/unix
-	chmod 775 $(DISTDIR)/unix/configure $(DISTDIR)/unix/configure.in
+	chmod 775 $(DISTDIR)/unix/configure
 	chmod 775 $(DISTDIR)/unix/ldAix
 	@mkdir $(DISTDIR)/generic
 	cp -p $(GENERIC_DIR)/*.[cdh] $(DISTDIR)/generic
@@ -2084,11 +2084,10 @@ dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(M
 	@mkdir $(DISTDIR)/library
 	cp -p $(TOP_DIR)/license.terms $(TOP_DIR)/library/*.tcl \
 		$(TOP_DIR)/library/tclIndex $(DISTDIR)/library
-	for i in http1.0 http opt msgcat reg dde tcltest platform; \
-	    do \
-		mkdir $(DISTDIR)/library/$$i ;\
-		cp -p $(TOP_DIR)/library/$$i/*.tcl $(DISTDIR)/library/$$i; \
-	    done;
+	@for i in http1.0 http opt msgcat reg dde tcltest platform; do \
+	    mkdir $(DISTDIR)/library/$$i;\
+	    cp -p $(TOP_DIR)/library/$$i/*.tcl $(DISTDIR)/library/$$i; \
+	done
 	@mkdir $(DISTDIR)/library/encoding
 	cp -p $(TOP_DIR)/library/encoding/*.enc $(DISTDIR)/library/encoding
 	@mkdir $(DISTDIR)/library/msgs
@@ -2105,7 +2104,8 @@ dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(M
 	cp -p $(TOP_DIR)/license.terms $(COMPAT_DIR)/*.[ch] \
 		$(COMPAT_DIR)/README $(DISTDIR)/compat
 	@mkdir $(DISTDIR)/compat/zlib
-	( cd $(COMPAT_DIR)/zlib; \
+	@echo cp -r $(COMPAT_DIR)/zlib $(DISTDIR)/compat/zlib
+	@( cd $(COMPAT_DIR)/zlib; \
 	  find . -name CVS -prune -o -type f -print ) \
 	    | ( cd $(COMPAT_DIR)/zlib ; xargs tar cf - ) \
 	    | ( cd $(DISTDIR)/compat/zlib ; tar xfp - )
@@ -2114,9 +2114,22 @@ dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(M
 	cp -p $(TOP_DIR)/tests/*.test $(TOP_DIR)/tests/README \
 		$(TOP_DIR)/tests/httpd $(TOP_DIR)/tests/*.tcl \
 		$(DISTDIR)/tests
+	@mkdir $(DISTDIR)/tests/auto0
+	for i in auto1 auto2 ; \
+	    do \
+		mkdir $(DISTDIR)/tests/auto0/$$i ;\
+		cp -p $(TOP_DIR)/tests/auto0/$$i/tclIndex $(TOP_DIR)/tests/auto0/$$i/*.tcl \
+			$(DISTDIR)/tests/auto0/$$i; \
+	    done;
+	for i in modules modules/mod1 modules/mod2 ; \
+	    do \
+		mkdir $(DISTDIR)/tests/auto0/$$i ;\
+		cp -p $(TOP_DIR)/tests/auto0/$$i/*.tm \
+			$(DISTDIR)/tests/auto0/$$i; \
+	    done;
 	@mkdir $(DISTDIR)/win
-	cp $(TOP_DIR)/win/Makefile.in $(DISTDIR)/win
-	cp $(TOP_DIR)/win/configure.in $(TOP_DIR)/win/configure \
+	cp -p $(TOP_DIR)/win/Makefile.in $(DISTDIR)/win
+	cp -p $(TOP_DIR)/win/configure.in $(TOP_DIR)/win/configure \
 		$(TOP_DIR)/win/tclConfig.sh.in $(TOP_DIR)/win/tclooConfig.sh \
 		$(TOP_DIR)/win/tcl.m4 $(TOP_DIR)/win/aclocal.m4 \
 		$(TOP_DIR)/win/tclsh.exe.manifest.in \
@@ -2156,16 +2169,21 @@ dist: $(UNIX_DIR)/configure $(UNIX_DIR)/tclConfig.h.in $(UNIX_DIR)/tcl.pc.in $(M
 	@mkdir $(DISTDIR)/libtommath
 	cp -p $(TOMMATH_SRCS) $(TOMMATH_DIR)/*.h $(DISTDIR)/libtommath
 	@mkdir $(DISTDIR)/pkgs
-	cp $(TOP_DIR)/pkgs/README $(DISTDIR)/pkgs
-	cp $(TOP_DIR)/pkgs/package.list.txt $(DISTDIR)/pkgs
+	cp -p $(TOP_DIR)/pkgs/README $(DISTDIR)/pkgs
+	cp -p $(TOP_DIR)/pkgs/package.list.txt $(DISTDIR)/pkgs
 	for i in `ls $(DISTROOT)/pkgs/*.tar.gz 2> /dev/null`; do \
 	    tar -C $(DISTDIR)/pkgs -xzf "$$i"; \
 	done
+	cp -p $(TOP_DIR)/.travis.yml $(DISTDIR)
+	mkdir -p $(DISTDIR)/.github/workflows
+	cp -p $(TOP_DIR)/.github/workflows/*.yml $(DISTDIR)/.github/workflows
 
 alldist: dist
 	rm -f $(DISTROOT)/$(DISTNAME)-src.tar.gz $(DISTROOT)/$(ZIPNAME)
-	cd $(DISTROOT); tar cf $(DISTNAME)-src.tar $(DISTNAME); \
-		gzip -9 $(DISTNAME)-src.tar; zip -qr8 $(ZIPNAME) $(DISTNAME)
+	( cd $(DISTROOT); \
+		tar cf $(DISTNAME)-src.tar $(DISTNAME); \
+		gzip -9 $(DISTNAME)-src.tar; \
+		zip -qr8 $(ZIPNAME) $(DISTNAME) )
 
 #--------------------------------------------------------------------------
 # This target creates the HTML folder for Tcl & Tk and places it in
diff --git a/unix/configure b/unix/configure
index d452bd3..e830867 100755
--- a/unix/configure
+++ b/unix/configure
@@ -308,7 +308,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAN_FLAGS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP TCL_THREADS TCLSH_PROG ZLIB_OBJS ZLIB_SRCS ZLIB_INCLUDE RANLIB ac_ct_RANLIB AR ac_ct_AR LIBOBJS TCL_LIBS DL_LIBS DL_OBJS PLAT_OBJS PLAT_SRCS LDAIX_SRC CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING LDFLAGS_DEBUG LDFLAGS_OPTIMIZE CC_SEARCH_FLAGS LD_SEARCH_FLAGS STLIB_LD SHLIB_LD TCL_SHLIB_LD_EXTRAS TK_SHLIB_LD_EXTRAS SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX MAKE_LIB MAKE_STUB_LIB INSTALL_LIB DLL_INSTALL_DIR INSTALL_STUB_LIB CFLAGS_DEFAULT LDFLAGS_DEFAULT DTRACE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL TCL_YEAR PKG_CFG_ARGS TCL_LIB_FILE TCL_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_SRC_DIR CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX TCL_SHARED_BUILD LD_LIBRARY_PATH_VAR TCL_BUILD_LIB_SPEC TCL_LIB_VERSIONS_OK TCL_SHARED_LIB_SUFFIX TCL_UNSHARED_LIB_SUFFIX TCL_HAS_LONGLONG INSTALL_TZDATA DTRACE_SRC DTRACE_HDR DTRACE_OBJ MAKEFILE_SHELL BUILD_DLTEST TCL_PACKAGE_PATH TCL_MODULE_PATH TCL_LIBRARY PRIVATE_INCLUDE_DIR HTML_DIR PACKAGE_DIR EXTRA_CC_SWITCHES EXTRA_APP_CC_SWITCHES EXTRA_INSTALL EXTRA_INSTALL_BINARIES EXTRA_BUILD_HTML EXTRA_TCLSH_LIBS DLTEST_LD DLTEST_SUFFIX'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS MAN_FLAGS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP TCL_THREADS TCLSH_PROG ZLIB_OBJS ZLIB_SRCS ZLIB_INCLUDE RANLIB ac_ct_RANLIB AR ac_ct_AR LIBOBJS TCL_LIBS DL_LIBS DL_OBJS PLAT_OBJS PLAT_SRCS LDAIX_SRC CFLAGS_DEBUG CFLAGS_OPTIMIZE CFLAGS_WARNING CFLAGS_NOLTO LDFLAGS_DEBUG LDFLAGS_OPTIMIZE CC_SEARCH_FLAGS LD_SEARCH_FLAGS STLIB_LD SHLIB_LD TCL_SHLIB_LD_EXTRAS TK_SHLIB_LD_EXTRAS SHLIB_LD_LIBS SHLIB_CFLAGS SHLIB_SUFFIX MAKE_LIB MAKE_STUB_LIB INSTALL_LIB DLL_INSTALL_DIR INSTALL_STUB_LIB CFLAGS_DEFAULT LDFLAGS_DEFAULT DTRACE TCL_VERSION TCL_MAJOR_VERSION TCL_MINOR_VERSION TCL_PATCH_LEVEL TCL_YEAR PKG_CFG_ARGS TCL_LIB_FILE TCL_LIB_FLAG TCL_LIB_SPEC TCL_STUB_LIB_FILE TCL_STUB_LIB_FLAG TCL_STUB_LIB_SPEC TCL_STUB_LIB_PATH TCL_INCLUDE_SPEC TCL_BUILD_STUB_LIB_SPEC TCL_BUILD_STUB_LIB_PATH TCL_SRC_DIR CFG_TCL_SHARED_LIB_SUFFIX CFG_TCL_UNSHARED_LIB_SUFFIX TCL_SHARED_BUILD LD_LIBRARY_PATH_VAR TCL_BUILD_LIB_SPEC TCL_LIB_VERSIONS_OK TCL_SHARED_LIB_SUFFIX TCL_UNSHARED_LIB_SUFFIX TCL_HAS_LONGLONG INSTALL_TZDATA DTRACE_SRC DTRACE_HDR DTRACE_OBJ MAKEFILE_SHELL BUILD_DLTEST TCL_PACKAGE_PATH TCL_MODULE_PATH TCL_LIBRARY PRIVATE_INCLUDE_DIR HTML_DIR PACKAGE_DIR EXTRA_CC_SWITCHES EXTRA_APP_CC_SWITCHES EXTRA_INSTALL EXTRA_INSTALL_BINARIES EXTRA_BUILD_HTML EXTRA_TCLSH_LIBS DLTEST_LD DLTEST_SUFFIX'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -1335,7 +1335,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 TCL_VERSION=8.6
 TCL_MAJOR_VERSION=8
 TCL_MINOR_VERSION=6
-TCL_PATCH_LEVEL=".10"
+TCL_PATCH_LEVEL=".11"
 VERSION=${TCL_VERSION}
 
 EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
@@ -2823,6 +2823,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <ctype.h>
+#include <stdlib.h>
 #if ((' ' & 0x0FF) == 0x020)
 # define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
 # define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
@@ -5714,14 +5715,6 @@ if test "${enable_shared+set}" = set; then
 else
   tcl_ok=yes
 fi;
-
-    if test "${enable_shared+set}" = set; then
-	enableval="$enable_shared"
-	tcl_ok=$enableval
-    else
-	tcl_ok=yes
-    fi
-
     if test "$tcl_ok" = "yes" ; then
 	echo "$as_me:$LINENO: result: shared" >&5
 echo "${ECHO_T}shared" >&6
@@ -6787,7 +6780,7 @@ fi
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
-	CYGWIN_*|MINGW32*|MSYS_*)
+	CYGWIN_*|MINGW32_*|MSYS_*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD='${CC} -shared'
 	    SHLIB_SUFFIX=".dll"
@@ -8713,7 +8706,7 @@ fi
 	case $system in
 	    AIX-*) ;;
 	    BSD/OS*) ;;
-	    CYGWIN_*|MINGW32*|MSYS_*) ;;
+	    CYGWIN_*|MINGW32_*|MSYS_*) ;;
 	    IRIX*) ;;
 	    NetBSD-*|DragonFly-*|FreeBSD-*|OpenBSD-*) ;;
 	    Darwin-*) ;;
@@ -8872,6 +8865,67 @@ cat >>confdefs.h <<\_ACEOF
 _ACEOF
 
 	fi
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fno-lto"
+	echo "$as_me:$LINENO: checking for working -fno-lto" >&5
+echo $ECHO_N "checking for working -fno-lto... $ECHO_C" >&6
+if test "${ac_cv_nolto+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_nolto=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_nolto=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_nolto" >&5
+echo "${ECHO_T}$ac_cv_nolto" >&6
+	CFLAGS=$hold_cflags
+	if test "$ac_cv_nolto" = "yes" ; then
+	    CFLAGS_NOLTO="-fno-lto"
+	else
+	    CFLAGS_NOLTO=""
+	fi
 
     # FIXME: This subst was left in only because the TCL_DL_LIBS
     # entry in tclConfig.sh uses it. It is not clear why someone
@@ -8901,6 +8955,7 @@ _ACEOF
 
 
 
+
 cat >>confdefs.h <<_ACEOF
 #define TCL_SHLIB_EXT "${SHLIB_SUFFIX}"
 _ACEOF
@@ -13968,7 +14023,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-struct tm tm; tm.tm_tzadj;
+struct tm tm; (void)tm.tm_tzadj;
   ;
   return 0;
 }
@@ -19611,6 +19666,7 @@ s,@LDAIX_SRC@,$LDAIX_SRC,;t t
 s,@CFLAGS_DEBUG@,$CFLAGS_DEBUG,;t t
 s,@CFLAGS_OPTIMIZE@,$CFLAGS_OPTIMIZE,;t t
 s,@CFLAGS_WARNING@,$CFLAGS_WARNING,;t t
+s,@CFLAGS_NOLTO@,$CFLAGS_NOLTO,;t t
 s,@LDFLAGS_DEBUG@,$LDFLAGS_DEBUG,;t t
 s,@LDFLAGS_OPTIMIZE@,$LDFLAGS_OPTIMIZE,;t t
 s,@CC_SEARCH_FLAGS@,$CC_SEARCH_FLAGS,;t t
diff --git a/unix/configure.in b/unix/configure.in
index 2a66cb1..21e4737 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -4,7 +4,7 @@ dnl	generate the file "configure", which is run during Tcl installation
 dnl	to configure the system for the local environment.
 
 AC_INIT([tcl],[8.6])
-AC_PREREQ(2.59)
+AC_PREREQ([2.59])
 
 dnl This is only used when included from macosx/configure.ac
 m4_ifdef([SC_USE_CONFIG_HEADERS], [
@@ -17,15 +17,16 @@ m4_ifdef([SC_USE_CONFIG_HEADERS], [
     /* Undef unused package specific autoheader defines so that we can
      * include both tclConfig.h and tkConfig.h at the same time: */
     /* override */ #undef PACKAGE_NAME
-    /* override */ #undef PACKAGE_STRING
     /* override */ #undef PACKAGE_TARNAME
+    /* override */ #undef PACKAGE_VERSION
+    /* override */ #undef PACKAGE_STRING
     #endif /* _TCLCONFIG */])
 ])
 
 TCL_VERSION=8.6
 TCL_MAJOR_VERSION=8
 TCL_MINOR_VERSION=6
-TCL_PATCH_LEVEL=".10"
+TCL_PATCH_LEVEL=".11"
 VERSION=${TCL_VERSION}
 
 EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
@@ -112,7 +113,7 @@ if test -z "$no_pipe" && test -n "$GCC"; then
     AC_CACHE_CHECK([if the compiler understands -pipe],
 	tcl_cv_cc_pipe, [
 	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -pipe"
-	AC_TRY_COMPILE(,, tcl_cv_cc_pipe=yes, tcl_cv_cc_pipe=no)
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[tcl_cv_cc_pipe=yes],[tcl_cv_cc_pipe=no])
 	CFLAGS=$hold_cflags])
     if test $tcl_cv_cc_pipe = yes; then
 	CFLAGS="$CFLAGS -pipe"
@@ -285,8 +286,8 @@ AC_CHECK_HEADERS(sys/modem.h)
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([for fd_set in sys/types], tcl_cv_type_fd_set, [
-    AC_TRY_COMPILE([#include <sys/types.h>],[fd_set readMask, writeMask;],
-	tcl_cv_type_fd_set=yes, tcl_cv_type_fd_set=no)])
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>]], [[fd_set readMask, writeMask;]])],
+	[tcl_cv_type_fd_set=yes],[tcl_cv_type_fd_set=no])])
 tcl_ok=$tcl_cv_type_fd_set
 if test $tcl_ok = no; then
     AC_CACHE_CHECK([for fd_mask in sys/select], tcl_cv_grep_fd_mask, [
@@ -367,12 +368,12 @@ AC_TYPE_SIZE_T
 AC_TYPE_UID_T
 
 AC_CACHE_CHECK([for socklen_t], tcl_cv_type_socklen_t, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <sys/types.h>
 	#include <sys/socket.h>
-    ],[
+    ]], [[
     	socklen_t foo;
-    ],[tcl_cv_type_socklen_t=yes],[tcl_cv_type_socklen_t=no])])
+    ]])],[tcl_cv_type_socklen_t=yes],[tcl_cv_type_socklen_t=no])])
 if test $tcl_cv_type_socklen_t = no; then
     AC_DEFINE(socklen_t, int, [Define as int if socklen_t is not available])
 fi
@@ -427,12 +428,12 @@ AC_CHECK_FUNC(opendir, , [AC_DEFINE(USE_DIRENT2_H, 1, [May we include <dirent2.h
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([union wait], tcl_cv_union_wait, [
-    AC_TRY_LINK([#include <sys/types.h>
-#include <sys/wait.h>], [
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <sys/wait.h>]], [[
 union wait x;
 WIFEXITED(x);		/* Generates compiler error if WIFEXITED
 			 * uses an int. */
-    ], tcl_cv_union_wait=yes, tcl_cv_union_wait=no)])
+    ]])],[tcl_cv_union_wait=yes],[tcl_cv_union_wait=no])])
 if test $tcl_cv_union_wait = no; then
     AC_DEFINE(NO_UNION_WAIT, 1, [Do we have a usable 'union wait'?])
 fi
@@ -482,10 +483,10 @@ fi
 
 AC_C_CHAR_UNSIGNED
 AC_CACHE_CHECK([signed char declarations], tcl_cv_char_signed, [
-    AC_TRY_COMPILE(, [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 	signed char *p;
 	p = 0;
-	], tcl_cv_char_signed=yes, tcl_cv_char_signed=no)])
+	]])],[tcl_cv_char_signed=yes],[tcl_cv_char_signed=no])])
 if test $tcl_cv_char_signed = yes; then
     AC_DEFINE(HAVE_SIGNED_CHAR, 1, [Are characters signed?])
 fi
@@ -495,7 +496,7 @@ fi
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([for a putenv() that copies the buffer], tcl_cv_putenv_copy, [
-    AC_TRY_RUN([
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
 	#include <stdlib.h>
 	#include <string.h>
 	#define OURVAR "havecopy=yes"
@@ -514,10 +515,10 @@ AC_CACHE_CHECK([for a putenv() that copies the buffer], tcl_cv_putenv_copy, [
 		return 1;
 	    }
 	}
-    ],
-    tcl_cv_putenv_copy=no,
-    tcl_cv_putenv_copy=yes,
-    tcl_cv_putenv_copy=no)])
+    ]])],
+    [tcl_cv_putenv_copy=no],
+    [tcl_cv_putenv_copy=yes],
+    [tcl_cv_putenv_copy=no])])
 if test $tcl_cv_putenv_copy = yes; then
     AC_DEFINE(HAVE_PUTENV_THAT_COPIES, 1,
 	[Does putenv() copy strings or incorporate them by reference?])
@@ -540,9 +541,9 @@ AC_CHECK_FUNCS(chflags mkstemps)
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([isnan], tcl_cv_isnan, [
-    AC_TRY_LINK([#include <math.h>], [
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[
 isnan(0.0);			/* Generates an error if isnan is missing */
-], tcl_cv_isnan=yes, tcl_cv_isnan=no)])
+]])],[tcl_cv_isnan=yes],[tcl_cv_isnan=no])])
 if test $tcl_cv_isnan = no; then
     AC_DEFINE(NO_ISNAN, 1, [Do we have a usable 'isnan'?])
 fi
@@ -570,7 +571,7 @@ if test "`uname -s`" = "Darwin" ; then
     if test "$ac_cv_header_AvailabilityMacros_h" = yes; then
 	AC_CACHE_CHECK([if weak import is available], tcl_cv_cc_weak_import, [
 	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
-	    AC_TRY_LINK([
+	    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
 		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
 		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1020
@@ -579,8 +580,8 @@ if test "`uname -s`" = "Darwin" ; then
 		    #error MAC_OS_X_VERSION_MIN_REQUIRED < 1020
 		    #endif
 		    int rand(void) __attribute__((weak_import));
-		], [rand();],
-		tcl_cv_cc_weak_import=yes, tcl_cv_cc_weak_import=no)
+		]], [[rand();]])],
+		[tcl_cv_cc_weak_import=yes],[tcl_cv_cc_weak_import=no])
 	    CFLAGS=$hold_cflags])
 	if test $tcl_cv_cc_weak_import = yes; then
 	    AC_DEFINE(HAVE_WEAK_IMPORT, 1, [Is weak import available?])
@@ -588,7 +589,7 @@ if test "`uname -s`" = "Darwin" ; then
 	AC_CACHE_CHECK([if Darwin SUSv3 extensions are available],
 	    tcl_cv_cc_darwin_c_source, [
 	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
-	    AC_TRY_COMPILE([
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
 		    #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
 		    #error __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1050
@@ -598,7 +599,7 @@ if test "`uname -s`" = "Darwin" ; then
 		    #endif
 		    #define _DARWIN_C_SOURCE 1
 		    #include <sys/cdefs.h>
-		],,tcl_cv_cc_darwin_c_source=yes, tcl_cv_cc_darwin_c_source=no)
+		]], [[]])],[tcl_cv_cc_darwin_c_source=yes],[tcl_cv_cc_darwin_c_source=no])
 	    CFLAGS=$hold_cflags])
 	if test $tcl_cv_cc_darwin_c_source = yes; then
 	    AC_DEFINE(_DARWIN_C_SOURCE, 1,
@@ -618,15 +619,15 @@ fi
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([for fts], tcl_cv_api_fts, [
-    AC_TRY_LINK([
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    #include <sys/param.h>
 	    #include <sys/stat.h>
 	    #include <fts.h>
-	], [
+	]], [[
 	    char*const p[2] = {"/", NULL};
 	    FTS *f = fts_open(p, FTS_PHYSICAL|FTS_NOCHDIR|FTS_NOSTAT, NULL);
 	    FTSENT *e = fts_read(f); fts_close(f);
-	], tcl_cv_api_fts=yes, tcl_cv_api_fts=no)])
+	]])],[tcl_cv_api_fts=yes],[tcl_cv_api_fts=no])])
 if test $tcl_cv_api_fts = yes; then
     AC_DEFINE(HAVE_FTS, 1, [Do we have fts functions?])
 fi
@@ -643,7 +644,7 @@ SC_BLOCKING_STYLE
 
 AC_MSG_CHECKING([whether to use dll unloading])
 AC_ARG_ENABLE(dll-unloading,
-    AC_HELP_STRING([--enable-dll-unloading],
+    AS_HELP_STRING([--enable-dll-unloading],
 	[enable the 'unload' command (default: on)]),
     [tcl_ok=$enableval], [tcl_ok=yes])
 if test $tcl_ok = yes; then
@@ -659,7 +660,7 @@ AC_MSG_RESULT([$tcl_ok])
 
 AC_MSG_CHECKING([for timezone data])
 AC_ARG_WITH(tzdata,
-    AC_HELP_STRING([--with-tzdata],
+    AS_HELP_STRING([--with-tzdata],
 	[install timezone data (default: autodetect)]),
     [tcl_ok=$withval], [tcl_ok=auto])
 #
@@ -707,7 +708,7 @@ fi
 #--------------------------------------------------------------------
 
 AC_ARG_ENABLE(dtrace,
-    AC_HELP_STRING([--enable-dtrace],
+    AS_HELP_STRING([--enable-dtrace],
 	[build with DTrace support (default: off)]),
     [tcl_ok=$enableval], [tcl_ok=no])
 if test $tcl_ok = yes; then
@@ -744,7 +745,7 @@ AC_MSG_RESULT([$tcl_ok])
 #--------------------------------------------------------------------
 
 AC_CACHE_CHECK([whether the cpuid instruction is usable], tcl_cv_cpuid, [
-    AC_TRY_LINK(, [
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
 	int index,regsPtr[4];
     __asm__ __volatile__("mov %%ebx, %%edi     \n\t"
                  "cpuid            \n\t"
@@ -752,7 +753,7 @@ AC_CACHE_CHECK([whether the cpuid instruction is usable], tcl_cv_cpuid, [
                  "mov %%edi, %%ebx  \n\t"
                  : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
                  : "a"(index) : "edi");
-    ], tcl_cv_cpuid=yes, tcl_cv_cpuid=no)])
+    ]])],[tcl_cv_cpuid=yes],[tcl_cv_cpuid=no])])
 if test $tcl_cv_cpuid = yes; then
     AC_DEFINE(HAVE_CPUID, 1, [Is the cpuid instruction usable?])
 fi
diff --git a/unix/installManPage b/unix/installManPage
index 00c6cc5..a442892 100755
--- a/unix/installManPage
+++ b/unix/installManPage
@@ -117,7 +117,7 @@ for Target in $Names; do
 	chmod 644 "$Dir/$First"
 	$Gzip "$Dir/$First"
     else
-	ln "$SymOrLoc$First$Gz" "$Dir/$Target$Gz"
+	ln $SymOrLoc"$First$Gz" "$Dir/$Target$Gz"
     fi
 done
 
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 504826b..8139569 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -28,9 +28,9 @@ AC_DEFUN([SC_PATH_TCLCONFIG], [
 	# we reset no_tcl in case something fails here
 	no_tcl=true
 	AC_ARG_WITH(tcl,
-	    AC_HELP_STRING([--with-tcl],
+	    AS_HELP_STRING([--with-tcl],
 		[directory containing tcl configuration (tclConfig.sh)]),
-	    with_tclconfig="${withval}")
+	    [with_tclconfig="${withval}"])
 	AC_MSG_CHECKING([for Tcl configuration])
 	AC_CACHE_VAL(ac_cv_c_tclconfig,[
 
@@ -161,9 +161,9 @@ AC_DEFUN([SC_PATH_TKCONFIG], [
 	# we reset no_tk in case something fails here
 	no_tk=true
 	AC_ARG_WITH(tk,
-	    AC_HELP_STRING([--with-tk],
+	    AS_HELP_STRING([--with-tk],
 		[directory containing tk configuration (tkConfig.sh)]),
-	    with_tkconfig="${withval}")
+	    [with_tkconfig="${withval}"])
 	AC_MSG_CHECKING([for Tk configuration])
 	AC_CACHE_VAL(ac_cv_c_tkconfig,[
 
@@ -508,17 +508,9 @@ AC_DEFUN([SC_BUILD_TCLSH], [
 AC_DEFUN([SC_ENABLE_SHARED], [
     AC_MSG_CHECKING([how to build libraries])
     AC_ARG_ENABLE(shared,
-	AC_HELP_STRING([--enable-shared],
+	AS_HELP_STRING([--enable-shared],
 	    [build and link with shared libraries (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
-
-    if test "${enable_shared+set}" = set; then
-	enableval="$enable_shared"
-	tcl_ok=$enableval
-    else
-	tcl_ok=yes
-    fi
-
     if test "$tcl_ok" = "yes" ; then
 	AC_MSG_RESULT([shared])
 	SHARED_BUILD=1
@@ -550,7 +542,7 @@ AC_DEFUN([SC_ENABLE_FRAMEWORK], [
     if test "`uname -s`" = "Darwin" ; then
 	AC_MSG_CHECKING([how to package libraries])
 	AC_ARG_ENABLE(framework,
-	    AC_HELP_STRING([--enable-framework],
+	    AS_HELP_STRING([--enable-framework],
 		[package shared libraries in MacOSX frameworks (default: off)]),
 	    [enable_framework=$enableval], [enable_framework=no])
 	if test $enable_framework = yes; then
@@ -597,11 +589,12 @@ AC_DEFUN([SC_ENABLE_FRAMEWORK], [
 #		TCL_THREADS
 #		_REENTRANT
 #		_THREAD_SAFE
+#
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_ENABLE_THREADS], [
     AC_ARG_ENABLE(threads,
-	AC_HELP_STRING([--enable-threads],
+	AS_HELP_STRING([--enable-threads],
 	    [build with threads (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
 
@@ -715,7 +708,7 @@ AC_DEFUN([SC_ENABLE_THREADS], [
 AC_DEFUN([SC_ENABLE_SYMBOLS], [
     AC_MSG_CHECKING([for build with symbols])
     AC_ARG_ENABLE(symbols,
-	AC_HELP_STRING([--enable-symbols],
+	AS_HELP_STRING([--enable-symbols],
 	    [build with debugging symbols (default: off)]),
 	[tcl_ok=$enableval], [tcl_ok=no])
 # FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
@@ -774,7 +767,7 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
 
 AC_DEFUN([SC_ENABLE_LANGINFO], [
     AC_ARG_ENABLE(langinfo,
-	AC_HELP_STRING([--enable-langinfo],
+	AS_HELP_STRING([--enable-langinfo],
 	    [use nl_langinfo if possible to determine encoding at startup, otherwise use old heuristic (default: on)]),
 	[langinfo_ok=$enableval], [langinfo_ok=yes])
 
@@ -785,8 +778,8 @@ AC_DEFUN([SC_ENABLE_LANGINFO], [
     AC_MSG_CHECKING([whether to use nl_langinfo])
     if test "$langinfo_ok" = "yes"; then
 	AC_CACHE_VAL(tcl_cv_langinfo_h, [
-	    AC_TRY_COMPILE([#include <langinfo.h>], [nl_langinfo(CODESET);],
-		    [tcl_cv_langinfo_h=yes],[tcl_cv_langinfo_h=no])])
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]], [[nl_langinfo(CODESET);]])],
+		    [tcl_cv_langinfo_h=yes], [tcl_cv_langinfo_h=no])])
 	AC_MSG_RESULT([$tcl_cv_langinfo_h])
 	if test $tcl_cv_langinfo_h = yes; then
 	    AC_DEFINE(HAVE_LANGINFO, 1, [Do we have nl_langinfo()?])
@@ -826,22 +819,22 @@ AC_DEFUN([SC_ENABLE_LANGINFO], [
 AC_DEFUN([SC_CONFIG_MANPAGES], [
     AC_MSG_CHECKING([whether to use symlinks for manpages])
     AC_ARG_ENABLE(man-symlinks,
-	AC_HELP_STRING([--enable-man-symlinks],
+	AS_HELP_STRING([--enable-man-symlinks],
 	    [use symlinks for the manpages (default: off)]),
-	test "$enableval" != "no" && MAN_FLAGS="$MAN_FLAGS --symlinks",
-	enableval="no")
+	[test "$enableval" != "no" && MAN_FLAGS="$MAN_FLAGS --symlinks"],
+	[enableval="no"])
     AC_MSG_RESULT([$enableval])
 
     AC_MSG_CHECKING([whether to compress the manpages])
     AC_ARG_ENABLE(man-compression,
-	AC_HELP_STRING([--enable-man-compression=PROG],
+	AS_HELP_STRING([--enable-man-compression=PROG],
 	    [compress the manpages with PROG (default: off)]),
 	[case $enableval in
 	    yes) AC_MSG_ERROR([missing argument to --enable-man-compression]);;
 	    no)  ;;
 	    *)   MAN_FLAGS="$MAN_FLAGS --compress $enableval";;
 	esac],
-	enableval="no")
+	[enableval="no"])
     AC_MSG_RESULT([$enableval])
     if test "$enableval" != "no"; then
 	AC_MSG_CHECKING([for compressed file suffix])
@@ -855,14 +848,14 @@ AC_DEFUN([SC_CONFIG_MANPAGES], [
 
     AC_MSG_CHECKING([whether to add a package name suffix for the manpages])
     AC_ARG_ENABLE(man-suffix,
-	AC_HELP_STRING([--enable-man-suffix=STRING],
+	AS_HELP_STRING([--enable-man-suffix=STRING],
 	    [use STRING as a suffix to manpage file names (default: no, AC_PACKAGE_NAME if enabled without specifying STRING)]),
 	[case $enableval in
 	    yes) enableval="AC_PACKAGE_NAME" MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
 	    no)  ;;
 	    *)   MAN_FLAGS="$MAN_FLAGS --suffix $enableval";;
 	esac],
-	enableval="no")
+	[enableval="no"])
     AC_MSG_RESULT([$enableval])
 
     AC_SUBST(MAN_FLAGS)
@@ -1006,7 +999,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if 64bit support is requested])
     AC_ARG_ENABLE(64bit,
-	AC_HELP_STRING([--enable-64bit],
+	AS_HELP_STRING([--enable-64bit],
 	    [enable 64bit support (default: off)]),
 	[do64bit=$enableval], [do64bit=no])
     AC_MSG_RESULT([$do64bit])
@@ -1015,7 +1008,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if 64bit Sparc VIS support is requested])
     AC_ARG_ENABLE(64bit-vis,
-	AC_HELP_STRING([--enable-64bit-vis],
+	AS_HELP_STRING([--enable-64bit-vis],
 	    [enable 64bit Sparc VIS support (default: off)]),
 	[do64bitVIS=$enableval], [do64bitVIS=no])
     AC_MSG_RESULT([$do64bitVIS])
@@ -1028,10 +1021,11 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
 	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
-	AC_TRY_LINK([
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
-	    void f(void) {}], [f();], tcl_cv_cc_visibility_hidden=yes,
-	    tcl_cv_cc_visibility_hidden=no)
+	    void f(void) {}]], [[f();]])],
+	    [tcl_cv_cc_visibility_hidden=yes],
+	    [tcl_cv_cc_visibility_hidden=no])
 	CFLAGS=$hold_cflags])
     AS_IF([test $tcl_cv_cc_visibility_hidden = yes], [
 	AC_DEFINE(MODULE_SCOPE,
@@ -1044,7 +1038,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_MSG_CHECKING([if rpath support is requested])
     AC_ARG_ENABLE(rpath,
-	AC_HELP_STRING([--disable-rpath],
+	AS_HELP_STRING([--disable-rpath],
 	    [disable rpath support (default: on)]),
 	[doRpath=$enableval], [doRpath=yes])
     AC_MSG_RESULT([$doRpath])
@@ -1189,7 +1183,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
-	CYGWIN_*|MINGW32*|MSYS_*)
+	CYGWIN_*|MINGW32_*|MSYS_*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD='${CC} -shared'
 	    SHLIB_SUFFIX=".dll"
@@ -1204,13 +1198,13 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    SHLIB_LD_LIBS="${SHLIB_LD_LIBS} -Wl,--out-implib,\$[@].a"
 	    AC_CACHE_CHECK(for Cygwin version of gcc,
 		ac_cv_cygwin,
-		AC_TRY_COMPILE([
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 		#ifdef __CYGWIN__
 		    #error cygwin
 		#endif
-		], [],
-		ac_cv_cygwin=no,
-		ac_cv_cygwin=yes)
+		]], [[]])],
+		[ac_cv_cygwin=no],
+		[ac_cv_cygwin=yes])
 	    )
 	    if test "$ac_cv_cygwin" = "no"; then
 		AC_MSG_ERROR([${CC} is not a cygwin compiler.])
@@ -1399,7 +1393,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 		AC_CACHE_CHECK([if compiler accepts -m64 flag], tcl_cv_cc_m64, [
 		    hold_cflags=$CFLAGS
 		    CFLAGS="$CFLAGS -m64"
-		    AC_TRY_LINK(,, tcl_cv_cc_m64=yes, tcl_cv_cc_m64=no)
+		    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[tcl_cv_cc_m64=yes],[tcl_cv_cc_m64=no])
 		    CFLAGS=$hold_cflags])
 		AS_IF([test $tcl_cv_cc_m64 = yes], [
 		    CFLAGS="$CFLAGS -m64"
@@ -1541,8 +1535,9 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 				tcl_cv_cc_arch_ppc64, [
 			    hold_cflags=$CFLAGS
 			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
-			    AC_TRY_LINK(,, tcl_cv_cc_arch_ppc64=yes,
-				    tcl_cv_cc_arch_ppc64=no)
+			    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+				    [tcl_cv_cc_arch_ppc64=yes],
+				    [tcl_cv_cc_arch_ppc64=no])
 			    CFLAGS=$hold_cflags])
 			AS_IF([test $tcl_cv_cc_arch_ppc64 = yes], [
 			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
@@ -1553,8 +1548,9 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 				tcl_cv_cc_arch_x86_64, [
 			    hold_cflags=$CFLAGS
 			    CFLAGS="$CFLAGS -arch x86_64"
-			    AC_TRY_LINK(,, tcl_cv_cc_arch_x86_64=yes,
-				    tcl_cv_cc_arch_x86_64=no)
+			    AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+				    [tcl_cv_cc_arch_x86_64=yes],
+				    [tcl_cv_cc_arch_x86_64=no])
 			    CFLAGS=$hold_cflags])
 			AS_IF([test $tcl_cv_cc_arch_x86_64 = yes], [
 			    CFLAGS="$CFLAGS -arch x86_64"
@@ -1573,7 +1569,8 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    AC_CACHE_CHECK([if ld accepts -single_module flag], tcl_cv_ld_single_module, [
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
-		AC_TRY_LINK(, [int i;], tcl_cv_ld_single_module=yes, tcl_cv_ld_single_module=no)
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])],[tcl_cv_ld_single_module=yes],
+		    [tcl_cv_ld_single_module=no])
 		LDFLAGS=$hold_ldflags])
 	    AS_IF([test $tcl_cv_ld_single_module = yes], [
 		SHLIB_LD="${SHLIB_LD} -Wl,-single_module"
@@ -1586,8 +1583,8 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 		    tcl_cv_ld_search_paths_first, [
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
-		AC_TRY_LINK(, [int i;], tcl_cv_ld_search_paths_first=yes,
-			tcl_cv_ld_search_paths_first=no)
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])],[tcl_cv_ld_search_paths_first=yes],
+		    [tcl_cv_ld_search_paths_first=no])
 		LDFLAGS=$hold_ldflags])
 	    AS_IF([test $tcl_cv_ld_search_paths_first = yes], [
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
@@ -1605,7 +1602,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    PLAT_SRCS='${MAC_OSX_SRCS}'
 	    AC_MSG_CHECKING([whether to use CoreFoundation])
 	    AC_ARG_ENABLE(corefoundation,
-		AC_HELP_STRING([--enable-corefoundation],
+		AS_HELP_STRING([--enable-corefoundation],
 		    [use CoreFoundation API on MacOSX (default: on)]),
 		[tcl_corefoundation=$enableval], [tcl_corefoundation=yes])
 	    AC_MSG_RESULT([$tcl_corefoundation])
@@ -1622,10 +1619,10 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
 			done])
 		    LIBS="$LIBS -framework CoreFoundation"
-		    AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>],
-			[CFBundleRef b = CFBundleGetMainBundle();],
-			tcl_cv_lib_corefoundation=yes,
-			tcl_cv_lib_corefoundation=no)
+		    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <CoreFoundation/CoreFoundation.h>]],
+			[[CFBundleRef b = CFBundleGetMainBundle();]])],
+			[tcl_cv_lib_corefoundation=yes],
+			[tcl_cv_lib_corefoundation=no])
 		    AS_IF([test "$fat_32_64" = yes], [
 			for v in CFLAGS CPPFLAGS LDFLAGS; do
 			    eval $v'="$hold_'$v'"'
@@ -1642,10 +1639,10 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 			for v in CFLAGS CPPFLAGS LDFLAGS; do
 			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc / /g" -e "s/-arch i386 / /g"`"'
 			done
-			AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>],
-			    [CFBundleRef b = CFBundleGetMainBundle();],
-			    tcl_cv_lib_corefoundation_64=yes,
-			    tcl_cv_lib_corefoundation_64=no)
+			AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <CoreFoundation/CoreFoundation.h>]],
+			    [[CFBundleRef b = CFBundleGetMainBundle();]])],
+			    [tcl_cv_lib_corefoundation_64=yes],
+			    [tcl_cv_lib_corefoundation_64=no])
 			for v in CFLAGS CPPFLAGS LDFLAGS; do
 			    eval $v'="$hold_'$v'"'
 			done])
@@ -1932,7 +1929,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    AC_CACHE_CHECK([for ld accepts -Bexport flag], tcl_cv_ld_Bexport, [
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
-		AC_TRY_LINK(, [int i;], tcl_cv_ld_Bexport=yes, tcl_cv_ld_Bexport=no)
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])],[tcl_cv_ld_Bexport=yes],[tcl_cv_ld_Bexport=no])
 	        LDFLAGS=$hold_ldflags])
 	    AS_IF([test $tcl_cv_ld_Bexport = yes], [
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
@@ -1959,7 +1956,7 @@ dnl # preprocessing tests use only CPPFLAGS.
     # Step 4: disable dynamic loading if requested via a command-line switch.
 
     AC_ARG_ENABLE(load,
-	AC_HELP_STRING([--enable-load],
+	AS_HELP_STRING([--enable-load],
 	    [allow dynamic loading and "load" command (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
     AS_IF([test "$tcl_ok" = no], [DL_OBJS=""])
@@ -2046,18 +2043,30 @@ dnl # preprocessing tests use only CPPFLAGS.
 
 	AC_CACHE_CHECK(for cast to union support,
 	    tcl_cv_cast_to_union,
-	    AC_TRY_COMPILE([],
-	    [
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 		  union foo { int i; double d; };
 		  union foo f = (union foo) (int) 0;
-	    ],
-	    tcl_cv_cast_to_union=yes,
-	    tcl_cv_cast_to_union=no)
+	    ]])],
+	    [tcl_cv_cast_to_union=yes],
+	    [tcl_cv_cast_to_union=no])
 	)
 	if test "$tcl_cv_cast_to_union" = "yes"; then
 	    AC_DEFINE(HAVE_CAST_TO_UNION, 1,
 		    [Defined when compiler supports casting to union type.])
 	fi
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fno-lto"
+	AC_CACHE_CHECK(for working -fno-lto,
+	    ac_cv_nolto,
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
+	    [ac_cv_nolto=yes],
+	    [ac_cv_nolto=no])
+	)
+	CFLAGS=$hold_cflags
+	if test "$ac_cv_nolto" = "yes" ; then
+	    CFLAGS_NOLTO="-fno-lto"
+	else
+	    CFLAGS_NOLTO=""
+	fi
 
     # FIXME: This subst was left in only because the TCL_DL_LIBS
     # entry in tclConfig.sh uses it. It is not clear why someone
@@ -2072,6 +2081,7 @@ dnl # preprocessing tests use only CPPFLAGS.
     AC_SUBST(CFLAGS_DEBUG)
     AC_SUBST(CFLAGS_OPTIMIZE)
     AC_SUBST(CFLAGS_WARNING)
+    AC_SUBST(CFLAGS_NOLTO)
 
     AC_SUBST(LDFLAGS)
     AC_SUBST(LDFLAGS_DEBUG)
@@ -2127,8 +2137,8 @@ dnl # preprocessing tests use only CPPFLAGS.
 
 AC_DEFUN([SC_MISSING_POSIX_HEADERS], [
     AC_CACHE_CHECK([dirent.h], tcl_cv_dirent_h, [
-    AC_TRY_LINK([#include <sys/types.h>
-#include <dirent.h>], [
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <dirent.h>]], [[
 #ifndef _POSIX_SOURCE
 #   ifdef __Lynx__
 	/*
@@ -2146,7 +2156,7 @@ d = opendir("foobar");
 entryPtr = readdir(d);
 p = entryPtr->d_name;
 closedir(d);
-], tcl_cv_dirent_h=yes, tcl_cv_dirent_h=no)])
+]])],[tcl_cv_dirent_h=yes],[tcl_cv_dirent_h=no])])
 
     if test $tcl_cv_dirent_h = no; then
 	AC_DEFINE(NO_DIRENT_H, 1, [Do we have <dirent.h>?])
@@ -2176,7 +2186,7 @@ closedir(d);
     AC_CHECK_HEADER(dlfcn.h, , [AC_DEFINE(NO_DLFCN_H, 1, [Do we have <dlfcn.h>?])])
 
     # OS/390 lacks sys/param.h (and doesn't need it, by chance).
-    AC_HAVE_HEADERS(sys/param.h)
+    AC_CHECK_HEADERS([sys/param.h])
 ])
 
 #--------------------------------------------------------------------
@@ -2205,7 +2215,7 @@ AC_DEFUN([SC_PATH_X], [
     not_really_there=""
     if test "$no_x" = ""; then
 	if test "$x_includes" = ""; then
-	    AC_TRY_CPP([#include <X11/Xlib.h>], , not_really_there="yes")
+	    AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <X11/Xlib.h>]])],[],[not_really_there="yes"])
 	else
 	    if test ! -r $x_includes/X11/Xlib.h; then
 		not_really_there="yes"
@@ -2215,7 +2225,7 @@ AC_DEFUN([SC_PATH_X], [
     if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
 	AC_MSG_CHECKING([for X11 header files])
 	found_xincludes="no"
-	AC_TRY_CPP([#include <X11/Xlib.h>], found_xincludes="yes", found_xincludes="no")
+	AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <X11/Xlib.h>]])],[found_xincludes="yes"],[found_xincludes="no"])
 	if test "$found_xincludes" = "no"; then
 	    dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/X11R6/include /usr/X11R5/include /usr/include/X11R5 /usr/include/X11R4 /usr/openwin/include /usr/X11/include /usr/sww/include"
 	    for i in $dirs ; do
@@ -2332,15 +2342,17 @@ AC_DEFUN([SC_TIME_HANDLER], [
     AC_CHECK_FUNCS(gmtime_r localtime_r mktime)
 
     AC_CACHE_CHECK([tm_tzadj in struct tm], tcl_cv_member_tm_tzadj, [
-	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; tm.tm_tzadj;],
-	    tcl_cv_member_tm_tzadj=yes, tcl_cv_member_tm_tzadj=no)])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[struct tm tm; (void)tm.tm_tzadj;]])],
+	    [tcl_cv_member_tm_tzadj=yes],
+	    [tcl_cv_member_tm_tzadj=no])])
     if test $tcl_cv_member_tm_tzadj = yes ; then
 	AC_DEFINE(HAVE_TM_TZADJ, 1, [Should we use the tm_tzadj field of struct tm?])
     fi
 
     AC_CACHE_CHECK([tm_gmtoff in struct tm], tcl_cv_member_tm_gmtoff, [
-	AC_TRY_COMPILE([#include <time.h>], [struct tm tm; (void)tm.tm_gmtoff;],
-	    tcl_cv_member_tm_gmtoff=yes, tcl_cv_member_tm_gmtoff=no)])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[struct tm tm; (void)tm.tm_gmtoff;]])],
+	    [tcl_cv_member_tm_gmtoff=yes],
+	    [tcl_cv_member_tm_gmtoff=no])])
     if test $tcl_cv_member_tm_gmtoff = yes ; then
 	AC_DEFINE(HAVE_TM_GMTOFF, 1, [Should we use the tm_gmtoff field of struct tm?])
     fi
@@ -2350,11 +2362,11 @@ AC_DEFUN([SC_TIME_HANDLER], [
     # (like convex) have timezone functions, etc.
     #
     AC_CACHE_CHECK([long timezone variable], tcl_cv_timezone_long, [
-	AC_TRY_COMPILE([#include <time.h>],
-	    [extern long timezone;
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]],
+	[[extern long timezone;
 	    timezone += 1;
-	    exit (0);],
-	    tcl_cv_timezone_long=yes, tcl_cv_timezone_long=no)])
+	    exit (0);]])],
+	    [tcl_cv_timezone_long=yes], [tcl_cv_timezone_long=no])])
     if test $tcl_cv_timezone_long = yes ; then
 	AC_DEFINE(HAVE_TIMEZONE_VAR, 1, [Should we use the global timezone variable?])
     else
@@ -2362,11 +2374,11 @@ AC_DEFUN([SC_TIME_HANDLER], [
 	# On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
 	#
 	AC_CACHE_CHECK([time_t timezone variable], tcl_cv_timezone_time, [
-	    AC_TRY_COMPILE([#include <time.h>],
-		[extern time_t timezone;
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]],
+	    [[extern time_t timezone;
 		timezone += 1;
-		exit (0);],
-		tcl_cv_timezone_time=yes, tcl_cv_timezone_time=no)])
+		exit (0);]])],
+		[tcl_cv_timezone_time=yes], [tcl_cv_timezone_time=no])])
 	if test $tcl_cv_timezone_time = yes ; then
 	    AC_DEFINE(HAVE_TIMEZONE_VAR, 1, [Should we use the global timezone variable?])
 	fi
@@ -2377,8 +2389,8 @@ AC_DEFUN([SC_TIME_HANDLER], [
 # SC_TCL_LINK_LIBS
 #
 #	Search for the libraries needed to link the Tcl shell.
-#	Things like the math library (-lm) and socket stuff (-lsocket vs.
-#	-lnsl) are dealt with here.
+#	Things like the math library (-lm), socket stuff (-lsocket vs.
+#	-lnsl), zlib (-lz) and libtommath (-ltommath) are dealt with here.
 #
 # Arguments:
 #	None.
@@ -2464,11 +2476,11 @@ AC_DEFUN([SC_TCL_LINK_LIBS], [
 
 AC_DEFUN([SC_TCL_EARLY_FLAG],[
     AC_CACHE_VAL([tcl_cv_flag_]translit($1,[A-Z],[a-z]),
-	AC_TRY_COMPILE([$2], $3, [tcl_cv_flag_]translit($1,[A-Z],[a-z])=no,
-	    AC_TRY_COMPILE([[#define ]$1[ 1
-]$2], $3,
-		[tcl_cv_flag_]translit($1,[A-Z],[a-z])=yes,
-		[tcl_cv_flag_]translit($1,[A-Z],[a-z])=no)))
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$2]], [[$3]])],
+	    [tcl_cv_flag_]translit($1,[A-Z],[a-z])=no,[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[[#define ]$1[ 1
+]$2]], [[$3]])],
+	[tcl_cv_flag_]translit($1,[A-Z],[a-z])=yes,
+	[tcl_cv_flag_]translit($1,[A-Z],[a-z])=no)]))
     if test ["x${tcl_cv_flag_]translit($1,[A-Z],[a-z])[}" = "xyes"] ; then
 	AC_DEFINE($1, 1, [Add the ]$1[ flag when building])
 	tcl_flags="$tcl_flags $1"
@@ -2515,14 +2527,14 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
     AC_CACHE_VAL(tcl_cv_type_64bit,[
 	tcl_cv_type_64bit=none
 	# See if the compiler knows natively about __int64
-	AC_TRY_COMPILE(,[__int64 value = (__int64) 0;],
-	    tcl_type_64bit=__int64, tcl_type_64bit="long long")
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[__int64 value = (__int64) 0;]])],
+	    [tcl_type_64bit=__int64], [tcl_type_64bit="long long"])
 	# See if we should use long anyway  Note that we substitute in the
 	# type that is our current guess for a 64-bit type inside this check
 	# program, so it should be modified only carefully...
-        AC_TRY_COMPILE(,[switch (0) {
-            case 1: case (sizeof(]${tcl_type_64bit}[)==sizeof(long)): ;
-        }],tcl_cv_type_64bit=${tcl_type_64bit})])
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[switch (0) {
+            case 1: case (sizeof(${tcl_type_64bit})==sizeof(long)): ;
+        }]])],[tcl_cv_type_64bit=${tcl_type_64bit}],[])])
     if test "${tcl_cv_type_64bit}" = none ; then
 	AC_DEFINE(TCL_WIDE_INT_IS_LONG, 1, [Are wide integers to be implemented with C 'long's?])
 	AC_MSG_RESULT([using long])
@@ -2533,26 +2545,26 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
 
 	# Now check for auxiliary declarations
 	AC_CACHE_CHECK([for struct dirent64], tcl_cv_struct_dirent64,[
-	    AC_TRY_COMPILE([#include <sys/types.h>
-#include <dirent.h>],[struct dirent64 p;],
-		tcl_cv_struct_dirent64=yes,tcl_cv_struct_dirent64=no)])
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <dirent.h>]], [[struct dirent64 p;]])],
+		[tcl_cv_struct_dirent64=yes],[tcl_cv_struct_dirent64=no])])
 	if test "x${tcl_cv_struct_dirent64}" = "xyes" ; then
 	    AC_DEFINE(HAVE_STRUCT_DIRENT64, 1, [Is 'struct dirent64' in <sys/types.h>?])
 	fi
 
 	AC_CACHE_CHECK([for DIR64], tcl_cv_DIR64,[
-	    AC_TRY_COMPILE([#include <sys/types.h>
-#include <dirent.h>],[struct dirent64 *p; DIR64 d = opendir64(".");
-            p = readdir64(d); rewinddir64(d); closedir64(d);],
-		tcl_cv_DIR64=yes,tcl_cv_DIR64=no)])
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <dirent.h>]], [[struct dirent64 *p; DIR64 d = opendir64(".");
+            p = readdir64(d); rewinddir64(d); closedir64(d);]])],
+		[tcl_cv_DIR64=yes], [tcl_cv_DIR64=no])])
 	if test "x${tcl_cv_DIR64}" = "xyes" ; then
 	    AC_DEFINE(HAVE_DIR64, 1, [Is 'DIR64' in <sys/types.h>?])
 	fi
 
 	AC_CACHE_CHECK([for struct stat64], tcl_cv_struct_stat64,[
-	    AC_TRY_COMPILE([#include <sys/stat.h>],[struct stat64 p;
-],
-		tcl_cv_struct_stat64=yes,tcl_cv_struct_stat64=no)])
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/stat.h>]], [[struct stat64 p;
+]])],
+		[tcl_cv_struct_stat64=yes], [tcl_cv_struct_stat64=no])])
 	if test "x${tcl_cv_struct_stat64}" = "xyes" ; then
 	    AC_DEFINE(HAVE_STRUCT_STAT64, 1, [Is 'struct stat64' in <sys/stat.h>?])
 	fi
@@ -2560,9 +2572,9 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
 	AC_CHECK_FUNCS(open64 lseek64)
 	AC_MSG_CHECKING([for off64_t])
 	AC_CACHE_VAL(tcl_cv_type_off64_t,[
-	    AC_TRY_COMPILE([#include <sys/types.h>],[off64_t offset;
-],
-		tcl_cv_type_off64_t=yes,tcl_cv_type_off64_t=no)])
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>]], [[off64_t offset;
+]])],
+		[tcl_cv_type_off64_t=yes], [tcl_cv_type_off64_t=no])])
 	dnl Define HAVE_TYPE_OFF64_T only when the off64_t type and the
 	dnl functions lseek64 and open64 are defined.
 	if test "x${tcl_cv_type_off64_t}" = "xyes" && \
@@ -2595,9 +2607,9 @@ AC_DEFUN([SC_TCL_64BIT_FLAGS], [
 
 AC_DEFUN([SC_TCL_CFG_ENCODING], [
     AC_ARG_WITH(encoding,
-	AC_HELP_STRING([--with-encoding],
+	AS_HELP_STRING([--with-encoding],
 	    [encoding for configuration values (default: iso8859-1)]),
-	with_tcencoding=${withval})
+	[with_tcencoding=${withval}])
 
     if test x"${with_tcencoding}" != x ; then
 	AC_DEFINE_UNQUOTED(TCL_CFGVAL_ENCODING,"${with_tcencoding}",
@@ -2628,11 +2640,11 @@ AC_DEFUN([SC_TCL_CHECK_BROKEN_FUNC],[
     AC_CHECK_FUNC($1, tcl_ok=1, tcl_ok=0)
     if test ["$tcl_ok"] = 1; then
 	AC_CACHE_CHECK([proper ]$1[ implementation], [tcl_cv_]$1[_unbroken],
-	    AC_TRY_RUN([[
+	    AC_RUN_IFELSE([AC_LANG_SOURCE([[[
 #include <stdlib.h>
 #include <string.h>
-int main() {]$2[}]],[tcl_cv_]$1[_unbroken]=ok,
-		[tcl_cv_]$1[_unbroken]=broken,[tcl_cv_]$1[_unbroken]=unknown))
+int main() {]$2[}]]])],[tcl_cv_$1_unbroken=ok],
+		[tcl_cv_$1_unbroken=broken],[tcl_cv_$1_unbroken=unknown]))
 	if test ["$tcl_cv_]$1[_unbroken"] = "ok"; then
 	    tcl_ok=1
 	else
@@ -2677,9 +2689,9 @@ AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_DECL], [AC_CHECK_DECLS(gethostbyaddr_r, [
 
 AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_TYPE], [AC_CHECK_FUNC(gethostbyaddr_r, [
     AC_CACHE_CHECK([for gethostbyaddr_r with 7 args], tcl_cv_api_gethostbyaddr_r_7, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <netdb.h>
-    ], [
+    ]], [[
 	char *addr;
 	int length;
 	int type;
@@ -2690,16 +2702,16 @@ AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_TYPE], [AC_CHECK_FUNC(gethostbyaddr_r, [
 
 	(void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
 			       &h_errnop);
-    ], tcl_cv_api_gethostbyaddr_r_7=yes, tcl_cv_api_gethostbyaddr_r_7=no)])
+    ]])],[tcl_cv_api_gethostbyaddr_r_7=yes],[tcl_cv_api_gethostbyaddr_r_7=no])])
     tcl_ok=$tcl_cv_api_gethostbyaddr_r_7
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETHOSTBYADDR_R_7, 1,
 	    [Define to 1 if gethostbyaddr_r takes 7 args.])
     else
 	AC_CACHE_CHECK([for gethostbyaddr_r with 8 args], tcl_cv_api_gethostbyaddr_r_8, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <netdb.h>
-	], [
+	]], [[
 	    char *addr;
 	    int length;
 	    int type;
@@ -2710,7 +2722,7 @@ AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_TYPE], [AC_CHECK_FUNC(gethostbyaddr_r, [
 
 	    (void) gethostbyaddr_r(addr, length, type, result, buffer, buflen,
 				   &resultp, &h_errnop);
-	], tcl_cv_api_gethostbyaddr_r_8=yes, tcl_cv_api_gethostbyaddr_r_8=no)])
+	]])],[tcl_cv_api_gethostbyaddr_r_8=yes],[tcl_cv_api_gethostbyaddr_r_8=no])])
 	tcl_ok=$tcl_cv_api_gethostbyaddr_r_8
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETHOSTBYADDR_R_8, 1,
@@ -2758,9 +2770,9 @@ AC_DEFUN([SC_TCL_GETHOSTBYNAME_R_DECL], [AC_CHECK_DECLS(gethostbyname_r, [
 
 AC_DEFUN([SC_TCL_GETHOSTBYNAME_R_TYPE], [AC_CHECK_FUNC(gethostbyname_r, [
     AC_CACHE_CHECK([for gethostbyname_r with 6 args], tcl_cv_api_gethostbyname_r_6, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <netdb.h>
-    ], [
+    ]], [[
 	char *name;
 	struct hostent *he, *res;
 	char buffer[2048];
@@ -2768,16 +2780,16 @@ AC_DEFUN([SC_TCL_GETHOSTBYNAME_R_TYPE], [AC_CHECK_FUNC(gethostbyname_r, [
 	int h_errnop;
 
 	(void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop);
-    ], tcl_cv_api_gethostbyname_r_6=yes, tcl_cv_api_gethostbyname_r_6=no)])
+    ]])],[tcl_cv_api_gethostbyname_r_6=yes],[tcl_cv_api_gethostbyname_r_6=no])])
     tcl_ok=$tcl_cv_api_gethostbyname_r_6
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETHOSTBYNAME_R_6, 1,
 	    [Define to 1 if gethostbyname_r takes 6 args.])
     else
 	AC_CACHE_CHECK([for gethostbyname_r with 5 args], tcl_cv_api_gethostbyname_r_5, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <netdb.h>
-	], [
+	]], [[
 	    char *name;
 	    struct hostent *he;
 	    char buffer[2048];
@@ -2785,22 +2797,22 @@ AC_DEFUN([SC_TCL_GETHOSTBYNAME_R_TYPE], [AC_CHECK_FUNC(gethostbyname_r, [
 	    int h_errnop;
 
 	    (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop);
-	], tcl_cv_api_gethostbyname_r_5=yes, tcl_cv_api_gethostbyname_r_5=no)])
+	]])],[tcl_cv_api_gethostbyname_r_5=yes],[tcl_cv_api_gethostbyname_r_5=no])])
 	tcl_ok=$tcl_cv_api_gethostbyname_r_5
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETHOSTBYNAME_R_5, 1,
 		[Define to 1 if gethostbyname_r takes 5 args.])
 	else
 	    AC_CACHE_CHECK([for gethostbyname_r with 3 args], tcl_cv_api_gethostbyname_r_3, [
-	    AC_TRY_COMPILE([
+	    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 		#include <netdb.h>
-	    ], [
+	    ]], [[
 		char *name;
 		struct hostent *he;
 		struct hostent_data data;
 
 		(void) gethostbyname_r(name, he, &data);
-	    ], tcl_cv_api_gethostbyname_r_3=yes, tcl_cv_api_gethostbyname_r_3=no)])
+	    ]])],[tcl_cv_api_gethostbyname_r_3=yes],[tcl_cv_api_gethostbyname_r_3=no])])
 	    tcl_ok=$tcl_cv_api_gethostbyname_r_3
 	    if test "$tcl_ok" = yes; then
 		AC_DEFINE(HAVE_GETHOSTBYNAME_R_3, 1,
@@ -2834,34 +2846,34 @@ AC_DEFUN([SC_TCL_GETHOSTBYNAME_R_TYPE], [AC_CHECK_FUNC(gethostbyname_r, [
 
 AC_DEFUN([SC_TCL_GETPWUID_R], [AC_CHECK_FUNC(getpwuid_r, [
     AC_CACHE_CHECK([for getpwuid_r with 5 args], tcl_cv_api_getpwuid_r_5, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <sys/types.h>
 	#include <pwd.h>
-    ], [
+    ]], [[
 	uid_t uid;
 	struct passwd pw, *pwp;
 	char buf[512];
 	int buflen = 512;
 
 	(void) getpwuid_r(uid, &pw, buf, buflen, &pwp);
-    ], tcl_cv_api_getpwuid_r_5=yes, tcl_cv_api_getpwuid_r_5=no)])
+    ]])],[tcl_cv_api_getpwuid_r_5=yes],[tcl_cv_api_getpwuid_r_5=no])])
     tcl_ok=$tcl_cv_api_getpwuid_r_5
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETPWUID_R_5, 1,
 	    [Define to 1 if getpwuid_r takes 5 args.])
     else
 	AC_CACHE_CHECK([for getpwuid_r with 4 args], tcl_cv_api_getpwuid_r_4, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <sys/types.h>
 	    #include <pwd.h>
-	], [
+	]], [[
 	    uid_t uid;
 	    struct passwd pw;
 	    char buf[512];
 	    int buflen = 512;
 
 	    (void)getpwnam_r(uid, &pw, buf, buflen);
-	], tcl_cv_api_getpwuid_r_4=yes, tcl_cv_api_getpwuid_r_4=no)])
+	]])],[tcl_cv_api_getpwuid_r_4=yes],[tcl_cv_api_getpwuid_r_4=no])])
 	tcl_ok=$tcl_cv_api_getpwuid_r_4
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETPWUID_R_4, 1,
@@ -2894,34 +2906,34 @@ AC_DEFUN([SC_TCL_GETPWUID_R], [AC_CHECK_FUNC(getpwuid_r, [
 
 AC_DEFUN([SC_TCL_GETPWNAM_R], [AC_CHECK_FUNC(getpwnam_r, [
     AC_CACHE_CHECK([for getpwnam_r with 5 args], tcl_cv_api_getpwnam_r_5, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <sys/types.h>
 	#include <pwd.h>
-    ], [
+    ]], [[
 	char *name;
 	struct passwd pw, *pwp;
 	char buf[512];
 	int buflen = 512;
 
 	(void) getpwnam_r(name, &pw, buf, buflen, &pwp);
-    ], tcl_cv_api_getpwnam_r_5=yes, tcl_cv_api_getpwnam_r_5=no)])
+    ]])],[tcl_cv_api_getpwnam_r_5=yes],[tcl_cv_api_getpwnam_r_5=no])])
     tcl_ok=$tcl_cv_api_getpwnam_r_5
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETPWNAM_R_5, 1,
 	    [Define to 1 if getpwnam_r takes 5 args.])
     else
 	AC_CACHE_CHECK([for getpwnam_r with 4 args], tcl_cv_api_getpwnam_r_4, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <sys/types.h>
 	    #include <pwd.h>
-	], [
+	]], [[
 	    char *name;
 	    struct passwd pw;
 	    char buf[512];
 	    int buflen = 512;
 
 	    (void)getpwnam_r(name, &pw, buf, buflen);
-	], tcl_cv_api_getpwnam_r_4=yes, tcl_cv_api_getpwnam_r_4=no)])
+	]])],[tcl_cv_api_getpwnam_r_4=yes],[tcl_cv_api_getpwnam_r_4=no])])
 	tcl_ok=$tcl_cv_api_getpwnam_r_4
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETPWNAM_R_4, 1,
@@ -2954,34 +2966,34 @@ AC_DEFUN([SC_TCL_GETPWNAM_R], [AC_CHECK_FUNC(getpwnam_r, [
 
 AC_DEFUN([SC_TCL_GETGRGID_R], [AC_CHECK_FUNC(getgrgid_r, [
     AC_CACHE_CHECK([for getgrgid_r with 5 args], tcl_cv_api_getgrgid_r_5, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <sys/types.h>
 	#include <grp.h>
-    ], [
+    ]], [[
 	gid_t gid;
 	struct group gr, *grp;
 	char buf[512];
 	int buflen = 512;
 
 	(void) getgrgid_r(gid, &gr, buf, buflen, &grp);
-    ], tcl_cv_api_getgrgid_r_5=yes, tcl_cv_api_getgrgid_r_5=no)])
+    ]])],[tcl_cv_api_getgrgid_r_5=yes],[tcl_cv_api_getgrgid_r_5=no])])
     tcl_ok=$tcl_cv_api_getgrgid_r_5
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETGRGID_R_5, 1,
 	    [Define to 1 if getgrgid_r takes 5 args.])
     else
 	AC_CACHE_CHECK([for getgrgid_r with 4 args], tcl_cv_api_getgrgid_r_4, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <sys/types.h>
 	    #include <grp.h>
-	], [
+	]], [[
 	    gid_t gid;
 	    struct group gr;
 	    char buf[512];
 	    int buflen = 512;
 
 	    (void)getgrgid_r(gid, &gr, buf, buflen);
-	], tcl_cv_api_getgrgid_r_4=yes, tcl_cv_api_getgrgid_r_4=no)])
+	]])],[tcl_cv_api_getgrgid_r_4=yes],[tcl_cv_api_getgrgid_r_4=no])])
 	tcl_ok=$tcl_cv_api_getgrgid_r_4
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETGRGID_R_4, 1,
@@ -3014,34 +3026,34 @@ AC_DEFUN([SC_TCL_GETGRGID_R], [AC_CHECK_FUNC(getgrgid_r, [
 
 AC_DEFUN([SC_TCL_GETGRNAM_R], [AC_CHECK_FUNC(getgrnam_r, [
     AC_CACHE_CHECK([for getgrnam_r with 5 args], tcl_cv_api_getgrnam_r_5, [
-    AC_TRY_COMPILE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	#include <sys/types.h>
 	#include <grp.h>
-    ], [
+    ]], [[
 	char *name;
 	struct group gr, *grp;
 	char buf[512];
 	int buflen = 512;
 
 	(void) getgrnam_r(name, &gr, buf, buflen, &grp);
-    ], tcl_cv_api_getgrnam_r_5=yes, tcl_cv_api_getgrnam_r_5=no)])
+    ]])],[tcl_cv_api_getgrnam_r_5=yes],[tcl_cv_api_getgrnam_r_5=no])])
     tcl_ok=$tcl_cv_api_getgrnam_r_5
     if test "$tcl_ok" = yes; then
 	AC_DEFINE(HAVE_GETGRNAM_R_5, 1,
 	    [Define to 1 if getgrnam_r takes 5 args.])
     else
 	AC_CACHE_CHECK([for getgrnam_r with 4 args], tcl_cv_api_getgrnam_r_4, [
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 	    #include <sys/types.h>
 	    #include <grp.h>
-	], [
+	]], [[
 	    char *name;
 	    struct group gr;
 	    char buf[512];
 	    int buflen = 512;
 
 	    (void)getgrnam_r(name, &gr, buf, buflen);
-	], tcl_cv_api_getgrnam_r_4=yes, tcl_cv_api_getgrnam_r_4=no)])
+	]])],[tcl_cv_api_getgrnam_r_4=yes],[tcl_cv_api_getgrnam_r_4=no])])
 	tcl_ok=$tcl_cv_api_getgrnam_r_4
 	if test "$tcl_ok" = yes; then
 	    AC_DEFINE(HAVE_GETGRNAM_R_4, 1,
diff --git a/unix/tcl.spec b/unix/tcl.spec
index e050a30..1758836 100644
--- a/unix/tcl.spec
+++ b/unix/tcl.spec
@@ -4,7 +4,7 @@
 
 Name:          tcl
 Summary:       Tcl scripting language development environment
-Version:       8.6.10
+Version:       8.6.11
 Release:       2
 License:       BSD
 Group:         Development/Languages
diff --git a/unix/tclConfig.h.in b/unix/tclConfig.h.in
index 2aa3bb8..c8d4e0c 100644
--- a/unix/tclConfig.h.in
+++ b/unix/tclConfig.h.in
@@ -4,9 +4,6 @@
     #ifndef _TCLCONFIG
     #define _TCLCONFIG
 
-/* Define if building universal (internal helper macro) */
-#undef AC_APPLE_UNIVERSAL_BUILD
-
 /* Is gettimeofday() actually declared in <sys/time.h>? */
 #undef GETTOD_NOT_DECLARED
 
@@ -222,10 +219,10 @@
 /* Is 'struct stat64' in <sys/stat.h>? */
 #undef HAVE_STRUCT_STAT64
 
-/* Define to 1 if `st_blksize' is a member of `struct stat'. */
+/* Define to 1 if `st_blksize' is member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
-/* Define to 1 if `st_blocks' is a member of `struct stat'. */
+/* Define to 1 if `st_blocks' is member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLOCKS
 
 /* Define to 1 if you have the <sys/filio.h> header file. */
@@ -366,9 +363,6 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
-/* Define to the home page for this package. */
-#undef PACKAGE_URL
-
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
@@ -447,17 +441,9 @@
 /* Should we use vfork() instead of fork()? */
 #undef USE_VFORK
 
-/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
-   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-#  undef WORDS_BIGENDIAN
-# endif
-#endif
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+#undef WORDS_BIGENDIAN
 
 /* Are Darwin SUSv3 extensions available? */
 #undef _DARWIN_C_SOURCE
@@ -512,7 +498,7 @@
 /* Define to `int' if <sys/types.h> does not define. */
 #undef pid_t
 
-/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* Define to `unsigned' if <sys/types.h> does not define. */
 #undef size_t
 
 /* Define as int if socklen_t is not available */
@@ -528,6 +514,7 @@
     /* Undef unused package specific autoheader defines so that we can
      * include both tclConfig.h and tkConfig.h at the same time: */
     /* override */ #undef PACKAGE_NAME
-    /* override */ #undef PACKAGE_STRING
     /* override */ #undef PACKAGE_TARNAME
+    /* override */ #undef PACKAGE_VERSION
+    /* override */ #undef PACKAGE_STRING
     #endif /* _TCLCONFIG */
diff --git a/unix/tclUnixInit.c b/unix/tclUnixInit.c
index 72039ac..7467938 100644
--- a/unix/tclUnixInit.c
+++ b/unix/tclUnixInit.c
@@ -48,10 +48,10 @@ DLLIMPORT extern __stdcall void GetSystemInfo(void *);
 }
 #endif
 
-#define NUMPROCESSORS 11
+#define NUMPROCESSORS 15
 static const char *const processors[NUMPROCESSORS] = {
-    "intel", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil",
-    "amd64", "ia32_on_win64"
+    "i686", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil",
+    "x86_64", "ia32_on_win64", "neutral", "arm64", "arm32_on_win64", "ia32_on_arm64"
 };
 
 typedef struct {
@@ -895,8 +895,7 @@ TclpSetVariables(
 
     GetSystemInfo(&sysInfo);
 
-    Tcl_SetVar2(interp, "tcl_platform", "os",
-	    "Windows NT", TCL_GLOBAL_ONLY);
+    Tcl_SetVar2(interp, "tcl_platform", "os", "Windows NT", TCL_GLOBAL_ONLY);
     sprintf(buffer, "%d.%d", osInfo.dwMajorVersion, osInfo.dwMinorVersion);
     Tcl_SetVar2(interp, "tcl_platform", "osVersion", buffer, TCL_GLOBAL_ONLY);
     if (sysInfo.wProcessorArchitecture < NUMPROCESSORS) {