# configure.in for GCC # Process this file with autoconf to generate a configuration script. # Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. #This file is part of GCC. #GCC is free software; you can redistribute it and/or modify it under #the terms of the GNU General Public License as published by the Free #Software Foundation; either version 2, or (at your option) any later #version. #GCC is distributed in the hope that it will be useful, but WITHOUT #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License #for more details. #You should have received a copy of the GNU General Public License #along with GCC; see the file COPYING. If not, write to the Free #Software Foundation, 59 Temple Place - Suite 330, Boston, MA #02111-1307, USA. # Initialization and defaults AC_PREREQ(2.13) AC_INIT(tree.c) AC_CONFIG_HEADER(auto-host.h:config.in) remove=rm hard_link=ln symbolic_link='ln -s' copy=cp # Check for bogus environment variables. # Test if LIBRARY_PATH contains the notation for the current directory # since this would lead to problems installing/building glibc. # LIBRARY_PATH contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(LIBRARY_PATH variable) changequote(,)dnl case ${LIBRARY_PATH} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) library_path_setting="contains current directory" ;; *) library_path_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($library_path_setting) if test "$library_path_setting" != "ok"; then AC_MSG_ERROR([ *** LIBRARY_PATH shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # Test if GCC_EXEC_PREFIX contains the notation for the current directory # since this would lead to problems installing/building glibc. # GCC_EXEC_PREFIX contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) changequote(,)dnl case ${GCC_EXEC_PREFIX} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) gcc_exec_prefix_setting="contains current directory" ;; *) gcc_exec_prefix_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($gcc_exec_prefix_setting) if test "$gcc_exec_prefix_setting" != "ok"; then AC_MSG_ERROR([ *** GCC_EXEC_PREFIX shouldn't contain the current directory when *** building gcc. 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DEFAULT_LINKER]) elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gnu_ld_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", [Define to enable the use of a default linker.]) fi # With GNU as AC_ARG_WITH(gnu-as, [ --with-gnu-as arrange to work with GNU as], gas_flag="$with_gnu_as", gas_flag=no) AC_ARG_WITH(as, [ --with-as arrange to use the specified as (full pathname)], DEFAULT_ASSEMBLER="$with_as") if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test ! -x "$DEFAULT_ASSEMBLER"; then AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. 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AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) # These tests can't be done till we know if we have limits.h. gcc_AC_C_CHAR_BIT gcc_AC_C_COMPILE_ENDIAN gcc_AC_C_FLOAT_FORMAT # See if GNAT has been installed gcc_AC_PROG_GNAT # See if we have the mktemp command. 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AC_MSG_CHECKING([for recent Pod::Man]) if perl -e 'use 1.10 Pod::Man' >/dev/null 2>&1; then AC_MSG_RESULT(yes) GENERATED_MANPAGES=generated-manpages AC_SUBST(GENERATED_MANPAGES) else AC_MSG_RESULT(no) GENERATED_MANPAGES= fi # How about lex? dnl Don't use AC_PROG_LEX; we insist on flex. dnl LEXLIB is not useful in gcc. if test -f $srcdir/../flex/skel.c; then FLEX='$(objdir)/../flex/flex' else AC_CHECK_PROG(FLEX, flex, flex, false) fi # Bison? # The -L switch is so bison can find its skeleton file. if test -f $srcdir/../bison/bison.simple; then BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/' else AC_CHECK_PROG(BISON, bison, bison, false) fi # These libraries may be used by collect2. # We may need a special search path to get them linked. AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, [save_LIBS="$LIBS" for libs in '' -lld -lmld \ '-L/usr/lib/cmplrs/cc2.11 -lmld' \ '-L/usr/lib/cmplrs/cc3.11 -lmld' do LIBS="$libs" AC_TRY_LINK_FUNC(ldopen, [gcc_cv_collect2_libs="$libs"; break]) done LIBS="$save_LIBS" test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) case $gcc_cv_collect2_libs in "none required") ;; *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; esac AC_SUBST(COLLECT2_LIBS) # When building Ada code on Alpha, we need exc_resume which is usually in # -lexc. So test for it. save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(exc_resume, exc) GNAT_LIBEXC="$LIBS" LIBS="$save_LIBS" AC_SUBST(GNAT_LIBEXC) # See if the stage1 system preprocessor understands the ANSI C # preprocessor stringification operator. (Used by symcat.h.) AC_C_STRINGIZE # Use only if it exists, # doesn't clash with , and declares intmax_t. AC_MSG_CHECKING(for inttypes.h) AC_CACHE_VAL(gcc_cv_header_inttypes_h, [AC_TRY_COMPILE( [#include #include ], [intmax_t i = -1;], [gcc_cv_header_inttypes_h=yes], gcc_cv_header_inttypes_h=no)]) AC_MSG_RESULT($gcc_cv_header_inttypes_h) if test $gcc_cv_header_inttypes_h = yes; then AC_DEFINE(HAVE_INTTYPES_H, 1, [Define if you have a working header file.]) fi dnl Disabled until we have a complete test for buggy enum bitfields. dnl gcc_AC_C_ENUM_BF_UNSIGNED AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \ sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \ fwrite_unlocked fprintf_unlocked getrusage nl_langinfo lstat) AC_CHECK_TYPE(ssize_t, int) # Try to determine the array type of the second argument of getgroups # for the target system (int or gid_t). AC_TYPE_GETGROUPS if test "${target}" = "${build}"; then TARGET_GETGROUPS_T=$ac_cv_type_getgroups else case "${target}" in # This condition may need some tweaking. 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If host!=build, we are in error and need to do more # work to find out the build config parameters. if test x$host = x$build then build_auto=auto-host.h FORBUILD=.. else # We create a subdir, then run autoconf in the subdir. # To prevent recursion we set host and build for the new # invocation of configure to the build for this invocation # of configure. tempdir=build.$$ rm -rf $tempdir mkdir $tempdir cd $tempdir case ${srcdir} in /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; *) realsrcdir=../${srcdir};; esac saved_CFLAGS="${CFLAGS}" CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ ${realsrcdir}/configure \ --target=$target --host=$build --build=$build CFLAGS="${saved_CFLAGS}" # We just finished tests for the build machine, so rename # the file auto-build.h in the gcc directory. mv auto-host.h ../auto-build.h cd .. rm -rf $tempdir build_auto=auto-build.h FORBUILD=../$build fi AC_SUBST(FORBUILD) tm_file="${tm_file} defaults.h" host_xm_file="auto-host.h ansidecl.h ${host_xm_file} ${tm_file}" build_xm_file="${build_auto} ansidecl.h ${build_xm_file} ${tm_file}" xm_file="ansidecl.h ${xm_file} ${tm_file}" # Truncate the target if necessary if test x$host_truncate_target != x; then target=`echo $target | sed -e 's/\(..............\).*/\1/'` fi # Get the version trigger filename from the toplevel if test "${with_gcc_version_trigger+set}" = set; then gcc_version_trigger=$with_gcc_version_trigger else gcc_version_trigger=${srcdir}/version.c fi changequote(,)dnl gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'` gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'` # Compile in configure arguments. if test -f configargs.h ; then # Being re-configured. gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" else gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" fi cat > configargs.h </dev/null then cc_set_by_configure="\$(CC)" quoted_cc_set_by_configure="\$(CC)" stage_prefix_set_by_configure="\$(STAGE_PREFIX)" else rm -f symtest.tem if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null then symbolic_link="cp -p" else symbolic_link="cp" fi cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`" quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`" stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`" fi rm -f symtest.tem out_object_file=`basename $out_file .c`.o tm_file_list= for f in $tm_file; do case $f in ansidecl.h ) tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;; defaults.h ) tm_file_list="${tm_file_list} $f" ;; *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;; esac done tm_p_file_list= for f in $tm_p_file; do tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" done host_xm_file_list= for f in $host_xm_file; do case $f in ansidecl.h ) host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;; auto-host.h | defaults.h ) host_xm_file_list="${host_xm_file_list} $f" ;; *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;; esac done build_xm_file_list= for f in $build_xm_file; do case $f in ansidecl.h ) build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;; auto-build.h | auto-host.h | defaults.h ) build_xm_file_list="${build_xm_file_list} $f" ;; *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;; esac done # Define macro CROSS_COMPILE in compilation # if this is a cross-compiler. # Also use all.cross instead of all.internal # and add cross-make to Makefile. cross_overrides="/dev/null" if test x$host != x$target then cross_defines="CROSS=-DCROSS_COMPILE" cross_overrides="${topdir}/cross-make" fi # If this is a cross-compiler that does not # have its own set of headers then define # inhibit_libc # If this is using newlib, then define inhibit_libc in LIBGCC2_CFLAGS. # This prevents libgcc2 from containing any code which requires libc # support. inhibit_libc= if [test x$host != x$target] && [test x$with_headers = x]; then inhibit_libc=-Dinhibit_libc else if [test x$with_newlib = xyes]; then inhibit_libc=-Dinhibit_libc fi fi AC_SUBST(inhibit_libc) # When building gcc with a cross-compiler, we need to fix a few things. # This must come after cross-make as we want all.build to override # all.cross. build_overrides="/dev/null" if test x$build != x$host then build_overrides="${topdir}/build-make" fi # Expand extra_headers to include complete path. # This substitutes for lots of t-* files. extra_headers_list= if test "x$extra_headers" = x then true else # Prepend ${srcdir}/ginclude/ to every entry in extra_headers. for file in $extra_headers; do extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}" done fi if test x$use_collect2 = xno; then use_collect2= fi # Add a definition of USE_COLLECT2 if system wants one. if test x$use_collect2 != x then host_xm_defines="${host_xm_defines} USE_COLLECT2" xm_defines="${xm_defines} USE_COLLECT2" fi # If we have gas in the build tree, make a link to it. if test -f ../gas/Makefile; then rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null fi # If we have nm and objdump in the build tree, make a link to them. if test -f ../binutils/Makefile; then rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null rm -f objdump; $symbolic_link ../binutils/objdump$host_exeext objdump$host_exeext 2>/dev/null fi # If we have ld in the build tree, make a link to it. if test -f ../ld/Makefile; then rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null fi # Figure out what assembler we will be using. AC_MSG_CHECKING(what assembler to use) gcc_cv_as= gcc_cv_gas_major_version= gcc_cv_gas_minor_version= gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd if test -x "$DEFAULT_ASSEMBLER"; then gcc_cv_as="$DEFAULT_ASSEMBLER" elif test -x "$AS"; then gcc_cv_as="$AS" elif test -x as$host_exeext; then # Build using assembler in the current directory. gcc_cv_as=./as$host_exeext elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then # Single tree build which includes gas. for f in $gcc_cv_as_bfd_srcdir/configure $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in do changequote(,)dnl gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f` changequote([,])dnl if test x$gcc_cv_gas_version != x; then break fi done changequote(,)dnl gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"` gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"` changequote([,])dnl fi if test "x$gcc_cv_as" = x -a x$host = x$target; then # Native build. # Search the same directories that the installed compiler will # search. Else we may find the wrong assembler and lose. If we # do not find a suitable assembler binary, then try the user's # path. # # Also note we have to check MD_EXEC_PREFIX before checking the # user's path. Unfortunately, there is no good way to get at the # value of MD_EXEC_PREFIX here. So we do a brute force search # through all the known MD_EXEC_PREFIX values. Ugh. This needs # to be fixed as part of the make/configure rewrite too. if test "x$exec_prefix" = xNONE; then if test "x$prefix" = xNONE; then test_prefix=/usr/local else test_prefix=$prefix fi else test_prefix=$exec_prefix fi # If the loop below does not find an assembler, then use whatever # one we can find in the users's path. # user's path. gcc_cv_as=as$host_exeext test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \ $test_prefix/lib/gcc-lib/$target \ /usr/lib/gcc/$target/$gcc_version \ /usr/lib/gcc/$target \ $test_prefix/$target/bin/$target/$gcc_version \ $test_prefix/$target/bin \ /usr/libexec \ /usr/ccs/gcc \ /usr/ccs/bin \ /udk/usr/ccs/bin \ /bsd43/usr/lib/cmplrs/cc \ /usr/cross64/usr/bin \ /usr/lib/cmplrs/cc \ /sysv/usr/lib/cmplrs/cc \ /svr4/usr/lib/cmplrs/cc \ /usr/bin" for dir in $test_dirs; do if test -f $dir/as$host_exeext; then gcc_cv_as=$dir/as$host_exeext break; fi done fi if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then AC_MSG_RESULT("newly built gas") else AC_MSG_RESULT($gcc_cv_as) fi # Figure out what nm we will be using. AC_MSG_CHECKING(what nm to use) if test -x nm$host_exeext; then gcc_cv_nm=./nm$host_exeext elif test x$host = x$target; then # Native build. gcc_cv_nm=nm$host_exeext fi AC_MSG_RESULT($gcc_cv_nm) # Figure out what objdump we will be using. AC_MSG_CHECKING(what objdump to use) if test -x objdump$host_exeext; then gcc_cv_objdump=./objdump$host_exeext elif test x$host = x$target; then # Native build. gcc_cv_objdump=objdump$host_exeext fi AC_MSG_RESULT($gcc_cv_objdump) # Figure out what assembler alignment features are present. AC_MSG_CHECKING(assembler alignment features) gcc_cv_as_alignment_features=none if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then # Gas version 2.6 and later support for .balign and .p2align. # bytes to skip when using .p2align. if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then gcc_cv_as_alignment_features=".balign and .p2align" AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN) fi # Gas version 2.8 and later support specifying the maximum # bytes to skip when using .p2align. if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then gcc_cv_as_alignment_features=".p2align including maximum skip" AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN) fi elif test x$gcc_cv_as != x; then # Check if we have .balign and .p2align echo ".balign 4" > conftest.s echo ".p2align 2" >> conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_alignment_features=".balign and .p2align" AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN) fi rm -f conftest.s conftest.o # Check if specifying the maximum bytes to skip when # using .p2align is supported. echo ".p2align 4,,7" > conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_alignment_features=".p2align including maximum skip" AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN) fi rm -f conftest.s conftest.o fi AC_MSG_RESULT($gcc_cv_as_alignment_features) AC_MSG_CHECKING(assembler subsection support) gcc_cv_as_subsections=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then gcc_cv_as_subsections="working .subsection -1" fi elif test x$gcc_cv_as != x; then # Check if we have .subsection echo ".subsection 1" > conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_subsections=".subsection" if test x$gcc_cv_nm != x; then cat > conftest.s < /dev/null 2>&1; then $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then : else gcc_cv_as_subsections="working .subsection -1" fi fi fi fi rm -f conftest.s conftest.o conftest.nm1 conftest.nm2 fi if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, [Define if your assembler supports .subsection and .subsection -1 starts emitting at the beginning of your section.]) fi AC_MSG_RESULT($gcc_cv_as_subsections) AC_MSG_CHECKING(assembler weak support) gcc_cv_as_weak=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then gcc_cv_as_weak="yes" fi elif test x$gcc_cv_as != x; then # Check if we have .weak echo " .weak foobar" > conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_weak="yes" fi rm -f conftest.s conftest.o conftest.nm1 conftest.nm2 fi if test x"$gcc_cv_as_weak" = xyes; then AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.]) fi AC_MSG_RESULT($gcc_cv_as_weak) AC_MSG_CHECKING(assembler hidden support) gcc_cv_as_hidden=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 10 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then gcc_cv_as_hidden="yes" fi elif test x$gcc_cv_as != x; then # Check if we have .hidden echo " .hidden foobar" > conftest.s echo "foobar:" >> conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_hidden="yes" fi rm -f conftest.s conftest.o conftest.nm1 conftest.nm2 fi if test x"$gcc_cv_as_hidden" = xyes; then AC_DEFINE(HAVE_GAS_HIDDEN, 1, [Define if your assembler supports .hidden.]) fi AC_MSG_RESULT($gcc_cv_as_hidden) AC_MSG_CHECKING(assembler leb128 support) gcc_cv_as_leb128=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 11 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then gcc_cv_as_leb128="yes" fi elif test x$gcc_cv_as != x; then # Check if we have .[us]leb128, and support symbol arithmetic with it. cat > conftest.s < /dev/null 2>&1; then gcc_cv_as_leb128="yes" # GAS versions before 2.11 do not support uleb128, # despite appearing to. # ??? There exists an elf-specific test that will crash # the assembler. Perhaps it's better to figure out whether # arbitrary sections are supported and try the test. as_ver=`$gcc_cv_as --version 2>/dev/null | head -1` if echo "$as_ver" | grep GNU > /dev/null; then changequote(,)dnl as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'` as_major=`echo $as_ver | sed 's/\..*//'` as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'` changequote([,])dnl if test $as_major -eq 2 -a $as_minor -lt 11; then gcc_cv_as_leb128="no" fi fi fi rm -f conftest.s conftest.o conftest.nm1 conftest.nm2 fi if test x"$gcc_cv_as_leb128" = xyes; then AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .uleb128.]) fi AC_MSG_RESULT($gcc_cv_as_leb128) AC_MSG_CHECKING(assembler eh_frame optimization) gcc_cv_as_eh_frame=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then gcc_cv_as_eh_frame="yes" fi elif test x$gcc_cv_as != x; then # Check if this is GAS. as_ver=`$gcc_cv_as --version < /dev/null 2> /dev/null | head -1` rm -f a.out 2> /dev/null if echo "$as_ver" | grep GNU > /dev/null; then # Versions up to and including 2.11.0 may mis-optimize # .eh_frame data. Try something. cat > conftest.s < conftest.lit < conftest.big < /dev/null 2>&1 \ && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ | tail -3 > conftest.got \ && { cmp conftest.lit conftest.got > /dev/null 2>&1 \ || cmp conftest.big conftest.got > /dev/null 2>&1; } then gcc_cv_as_eh_frame="yes" else gcc_cv_as_eh_frame="bad" if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, [Define if your assembler mis-optimizes .eh_frame data.]) fi fi fi rm -f conftest.* fi AC_MSG_RESULT($gcc_cv_as_eh_frame) AC_MSG_CHECKING(assembler section merging support) gcc_cv_as_shf_merge=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then gcc_cv_as_shf_merge=yes fi elif test x$gcc_cv_as != x; then # Check if we support SHF_MERGE sections echo '.section .rodata.str, "aMS", @progbits, 1' > conftest.s if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_shf_merge=yes fi rm -f conftest.s conftest.o fi if test x"$gcc_cv_as_shf_merge" = xyes; then AC_DEFINE(HAVE_GAS_SHF_MERGE, 1, [Define if your assembler supports marking sections with SHF_MERGE flag.]) fi AC_MSG_RESULT($gcc_cv_as_shf_merge) case "$target" in sparc*-*-*) AC_CACHE_CHECK([assembler .register pseudo-op support], gcc_cv_as_register_pseudo_op, [ gcc_cv_as_register_pseudo_op=unknown if test x$gcc_cv_as != x; then # Check if we have .register echo ".register %g2, #scratch" > conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_register_pseudo_op=yes else gcc_cv_as_register_pseudo_op=no fi rm -f conftest.s conftest.o fi ]) if test "x$gcc_cv_as_register_pseudo_op" = xyes; then AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, [Define if your assembler supports .register.]) fi AC_CACHE_CHECK([assembler supports -relax], gcc_cv_as_relax_opt, [ gcc_cv_as_relax_opt=unknown if test x$gcc_cv_as != x; then # Check if gas supports -relax echo ".text" > conftest.s if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_relax_opt=yes else gcc_cv_as_relax_opt=no fi rm -f conftest.s conftest.o fi ]) if test "x$gcc_cv_as_relax_opt" = xyes; then AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.]) fi case "$tm_file" in *64*) AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)], gcc_cv_as_flags64, [ if test -n "$gcc_cv_as"; then echo ".xword foo" > conftest.s gcc_cv_as_flags64=no for flag in "-xarch=v9" "-64 -Av9"; do if $gcc_cv_as $flag -o conftest.o conftest.s \ > /dev/null 2>&1; then gcc_cv_as_flags64=$flag break fi done rm -f conftest.s conftest.o else if test "$gas" = yes; then gcc_cv_as_flags64="-64 -Av9" else gcc_cv_as_flags64="-xarch=v9" fi fi ]) if test "x$gcc_cv_as_flags64" = xno; then changequote(, ) tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'` dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'` changequote([, ]) else AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64", [Define if the assembler supports 64bit sparc.]) fi ;; *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no} ;; esac if test "x$gcc_cv_as_flags64" != xno; then AC_CACHE_CHECK([for assembler offsetable %lo() support], gcc_cv_as_offsetable_lo10, [ gcc_cv_as_offsetable_lo10=unknown if test "x$gcc_cv_as" != x; then # Check if assembler has offsetable %lo() echo "or %g1, %lo(ab) + 12, %g1" > conftest.s echo "or %g1, %lo(ab + 12), %g1" > conftest1.s if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \ > /dev/null 2>&1 && $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \ > /dev/null 2>&1; then if cmp conftest.o conftest1.o > /dev/null 2>&1; then gcc_cv_as_offsetable_lo10=no else gcc_cv_as_offsetable_lo10=yes fi else gcc_cv_as_offsetable_lo10=no fi rm -f conftest.s conftest.o conftest1.s conftest1.o fi ]) if test "x$gcc_cv_as_offsetable_lo10" = xyes; then AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, [Define if your assembler supports offsetable %lo().]) fi fi ;; changequote(,)dnl i[34567]86-*-* | x86_64-*-*) changequote([,])dnl AC_MSG_CHECKING(assembler instructions) gcc_cv_as_instructions= if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then gcc_cv_as_instructions="filds fists" fi elif test x$gcc_cv_as != x; then set "filds fists" "filds mem; fists mem" while test $# -gt 0 do echo "$2" > conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" " fi shift 2 done rm -f conftest.s conftest.o fi if test x"$gcc_cv_as_instructions" != x; then AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`) fi AC_MSG_RESULT($gcc_cv_as_instructions) AC_MSG_CHECKING(assembler GOTOFF in data directives) gcc_cv_as_gotoff_in_data=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x then if test "$gcc_cv_gas_major_version" -eq 2 \ -a "$gcc_cv_gas_minor_version" -ge 11 \ -o "$gcc_cv_gas_major_version" -gt 2; then gcc_cv_as_gotoff_in_data=yes fi elif test x$gcc_cv_as != x; then cat > conftest.s < /dev/null 2>&1; then gcc_cv_as_gotoff_in_data=yes fi fi AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, [`if test $gcc_cv_as_gotoff_in_data = yes; then echo 1; else echo 0; fi`], [Define true if the assembler supports '.long foo@GOTOFF'.]) AC_MSG_RESULT($gcc_cv_as_gotoff_in_data) ;; esac AC_MSG_CHECKING(assembler dwarf2 debug_line support) gcc_cv_as_dwarf2_debug_line=no # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any # info to the output file. So, as supported targets are added to gas 2.11, # add some instruction here to (also) show we expect this might work. # ??? Once 2.11 is released, probably need to add first known working # version to the per-target configury. case "$target" in i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* | x86_64*-*-*) insn="nop" ;; ia64*-*-*) insn="nop 0" ;; esac if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 \ -a "$gcc_cv_gas_minor_version" -ge 11 \ -o "$gcc_cv_gas_major_version" -gt 2 \ && grep 'obj_format = elf' ../gas/Makefile > /dev/null \ && test x"$insn" != x ; then gcc_cv_as_dwarf2_debug_line="yes" fi elif test x$gcc_cv_as != x -a x"$insn" != x ; then echo ' .file 1 "conftest.s"' > conftest.s echo ' .loc 1 3 0' >> conftest.s echo " $insn" >> conftest.s # ??? This fails with non-gnu grep. if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \ && grep debug_line conftest.o > /dev/null 2>&1 ; then # The .debug_line file table must be in the exact order that # we specified the files, since these indices are also used # by DW_AT_decl_file. Approximate this test by testing if # the assembler bitches if the same index is assigned twice. echo ' .file 1 "foo.s"' > conftest.s echo ' .file 1 "bar.s"' >> conftest.s if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_dwarf2_debug_line="no" else gcc_cv_as_dwarf2_debug_line="yes" fi fi rm -f conftest.s conftest.o conftest.nm1 conftest.nm2 fi if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, [Define if your assembler supports dwarf2 .file/.loc directives, and preserves file table indices exactly as given.]) fi AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line) AC_MSG_CHECKING(assembler --gdwarf2 support) gcc_cv_as_gdwarf2_flag=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 \ -a "$gcc_cv_gas_minor_version" -ge 11 \ -o "$gcc_cv_gas_major_version" -gt 2 \ && grep 'obj_format = elf' ../gas/Makefile > /dev/null \ && test x"$insn" != x ; then gcc_cv_as_gdwarf2_debug_flag="yes" fi elif test x$gcc_cv_as != x -a x"$insn" != x ; then echo '' > conftest.s # ??? This fails with non-gnu grep. if $gcc_cv_as --gdwarf2 -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_gdwarf2_flag="yes" fi rm -f conftest.s conftest.o fi if test x"$gcc_cv_as_gdwarf2_flag" = xyes; then AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, [Define if your assembler supports the --gdwarf2 option.]) fi AC_MSG_RESULT($gcc_cv_as_gdwarf2_flag) AC_MSG_CHECKING(assembler --gstabs support) gcc_cv_as_gstabs_flag=no if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then if test "$gcc_cv_gas_major_version" -eq 2 \ -a "$gcc_cv_gas_minor_version" -ge 11 \ -o "$gcc_cv_gas_major_version" -gt 2 \ && grep 'obj_format = elf' ../gas/Makefile > /dev/null \ && test x"$insn" != x ; then gcc_cv_as_gstabs_debug_flag="yes" fi elif test x$gcc_cv_as != x -a x"$insn" != x ; then echo '' > conftest.s # ??? This fails with non-gnu grep. if $gcc_cv_as --gstabs -o conftest.o conftest.s > /dev/null 2>&1 ; then gcc_cv_as_gstabs_flag="yes" fi rm -f conftest.s conftest.o fi if test x"$gcc_cv_as_gstabs_flag" = xyes; then AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, [Define if your assembler supports the --gstabs option.]) fi AC_MSG_RESULT($gcc_cv_as_gstabs_flag) if test "$prefix" != "/usr" && test "$prefix" != "/usr/local" ; then AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include") fi # Figure out what language subdirectories are present. # Look if the user specified --enable-languages="..."; if not, use # the environment variable $LANGUAGES if defined. $LANGUAGES might # go away some day. # NB: embedded tabs in this IF block -- do not untabify if test x"${enable_languages+set}" != xset; then if test x"${LANGUAGES+set}" = xset; then enable_languages="${LANGUAGES}" AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead]) else enable_languages=all fi else if test x"${enable_languages}" = x || test x"${enable_languages}" = xyes; then AC_MSG_ERROR([--enable-languages needs at least one language argument]) fi fi enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'` # First scan to see if an enabled language requires some other language. # We assume that a given config-lang.in will list all the language # front ends it requires, even if some are required indirectly. for lang in ${srcdir}/*/config-lang.in .. do case $lang in ..) ;; # The odd quoting in the next line works around # an apparent bug in bash 1.12 on linux. changequote(,)dnl ${srcdir}/[*]/config-lang.in) ;; *) lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^ ]*\).*$,\1,p' $lang` for other in $this_lang_requires do case ,${enable_languages}, in *,$other,*) ;; *,all,*) ;; *,$lang_alias,*) enable_languages="$enable_languages,$other" ;; esac done ;; changequote([,])dnl esac done subdirs= for lang in ${srcdir}/*/config-lang.in .. do case $lang in ..) ;; # The odd quoting in the next line works around # an apparent bug in bash 1.12 on linux. changequote(,)dnl ${srcdir}/[*]/config-lang.in) ;; *) lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^ ]*\).*$,\1,p' $lang` build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^ ]*\).*$,\1,p' $lang` if test "x$lang_alias" = x then echo "$lang doesn't set \$language." 1>&2 exit 1 fi case ${build_by_default},${enable_languages}, in *,$lang_alias,*) add_this_lang=yes ;; no,*) add_this_lang=no ;; *,all,*) add_this_lang=yes ;; *) add_this_lang=no ;; esac if test x"${add_this_lang}" = xyes; then case $lang in ${srcdir}/ada/config-lang.in) if test x$have_gnat = xyes ; then subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" fi ;; *) subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;; esac fi ;; changequote([,])dnl esac done # Make gthr-default.h if we have a thread file. gthread_flags= if test $thread_file != single; then rm -f gthr-default.h echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h gthread_flags=-DHAVE_GTHR_DEFAULT fi AC_SUBST(gthread_flags) # Find out what GC implementation we want, or may, use. AC_ARG_WITH(gc, [ --with-gc={simple,page} choose the garbage collection mechanism to use with the compiler], [case "$withval" in simple | page) GGC=ggc-$withval ;; *) AC_MSG_ERROR([$withval is an invalid option to --with-gc]) ;; esac], [GGC=ggc-page]) AC_SUBST(GGC) echo "Using $GGC for garbage collection." # Use the system's zlib library. zlibdir=-L../zlib zlibinc="-I\$(srcdir)/../zlib" AC_ARG_WITH(system-zlib, [ --with-system-zlib use installed libz], zlibdir= zlibinc= ) AC_SUBST(zlibdir) AC_SUBST(zlibinc) dnl Very limited version of automake's enable-maintainer-mode AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) dnl maintainer-mode is disabled by default AC_ARG_ENABLE(maintainer-mode, [ --enable-maintainer-mode enable make rules and dependencies not useful (and sometimes confusing) to the casual installer], maintainer_mode=$enableval, maintainer_mode=no) AC_MSG_RESULT($maintainer_mode) if test "$maintainer_mode" = "yes"; then MAINT='' else MAINT='#' fi AC_SUBST(MAINT)dnl # With Setjmp/Longjmp based exception handling. AC_ARG_ENABLE(sjlj-exceptions, [ --enable-sjlj-exceptions arrange to use setjmp/longjmp exception handling], [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, [Define 0/1 to force the choice for exception handling model.])]) # Make empty files to contain the specs and options for each language. # Then add #include lines to for a compiler that has specs and/or options. lang_specs_files= lang_options_files= lang_tree_files= rm -f specs.h options.h gencheck.h touch specs.h options.h gencheck.h for subdir in . $subdirs do if test -f $srcdir/$subdir/lang-specs.h; then echo "#include \"$subdir/lang-specs.h\"" >>specs.h lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h" fi if test -f $srcdir/$subdir/lang-options.h; then echo "#include \"$subdir/lang-options.h\"" >>options.h lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h" fi if test -f $srcdir/$subdir/$subdir-tree.def; then echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def" fi done # These (without "all_") are set in each config-lang.in. # `language' must be a single word so is spelled singularly. all_languages= all_boot_languages= all_compilers= all_stagestuff= all_diff_excludes= all_outputs='Makefile intl/Makefile fixinc/Makefile gccbug mklibgcc' # List of language makefile fragments. all_lang_makefiles= all_headers= all_lib2funcs= # Add the language fragments. # Languages are added via two mechanisms. Some information must be # recorded in makefile variables, these are defined in config-lang.in. # We accumulate them and plug them into the main Makefile. # The other mechanism is a set of hooks for each of the main targets # like `clean', `install', etc. language_fragments="Make-lang" language_hooks="Make-hooks" for s in .. $subdirs do if test $s != ".." then language= boot_language= compilers= stagestuff= diff_excludes= headers= outputs= lib2funcs= . ${srcdir}/$s/config-lang.in if test "x$language" = x then echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2 exit 1 fi all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in" if test -f ${srcdir}/$s/Makefile.in then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in" fi all_languages="$all_languages $language" if test "x$boot_language" = xyes then all_boot_languages="$all_boot_languages $language" fi all_compilers="$all_compilers $compilers" all_stagestuff="$all_stagestuff $stagestuff" all_diff_excludes="$all_diff_excludes $diff_excludes" all_headers="$all_headers $headers" all_outputs="$all_outputs $outputs" all_lib2funcs="$all_lib2funcs $lib2funcs" fi done check_languages= for language in .. $all_languages do if test $language != ".." then check_languages="$check_languages check-$language" fi done # Since we can't use `::' targets, we link each language in # with a set of hooks, reached indirectly via lang.${target}. rm -f Make-hooks touch Make-hooks target_list="all.build all.cross start.encap rest.encap \ info dvi generated-manpages \ install-normal install-common install-info install-man \ uninstall \ mostlyclean clean distclean extraclean maintainer-clean \ stage1 stage2 stage3 stage4" for t in $target_list do x= for lang in .. $all_languages do if test $lang != ".."; then x="$x $lang.$t" fi done echo "lang.$t: $x" >> Make-hooks done # Create .gdbinit. echo "dir ." > .gdbinit echo "dir ${srcdir}" >> .gdbinit if test x$gdb_needs_out_file_path = xyes then echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit fi if test "x$subdirs" != x; then for s in $subdirs do echo "dir ${srcdir}/$s" >> .gdbinit done fi echo "source ${srcdir}/gdbinit.in" >> .gdbinit # Define variables host_canonical and build_canonical # because some Cygnus local changes in the Makefile depend on them. build_canonical=${build} host_canonical=${host} target_subdir= if test "${host}" != "${target}" ; then target_subdir=${target_alias}/ fi AC_SUBST(build_canonical) AC_SUBST(host_canonical) AC_SUBST(target_subdir) # If $(exec_prefix) exists and is not the same as $(prefix), then compute an # absolute path for gcc_tooldir based on inserting the number of up-directory # movements required to get from $(exec_prefix) to $(prefix) into the basic # $(libsubdir)/@(unlibsubdir) based path. # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel # make and thus we'd get different behavior depending on where we built the # sources. if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)' else changequote(<<, >>)dnl # An explanation of the sed strings: # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix' # -e 's|/$||' match a trailing forward slash and eliminates it # -e 's|^[^/]|/|' forces the string to start with a forward slash (*) # -e 's|/[^/]*|../|g' replaces each occurrence of / with ../ # # (*) Note this pattern overwrites the first character of the string # with a forward slash if one is not already present. This is not a # problem because the exact names of the sub-directories concerned is # unimportant, just the number of them matters. # # The practical upshot of these patterns is like this: # # prefix exec_prefix result # ------ ----------- ------ # /foo /foo/bar ../ # /foo/ /foo/bar ../ # /foo /foo/bar/ ../ # /foo/ /foo/bar/ ../ # /foo /foo/bar/ugg ../../ # dollar='$$' gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)" changequote([, ])dnl fi AC_SUBST(gcc_tooldir) AC_SUBST(dollar) # Find a directory in which to install a shared libgcc. AC_ARG_ENABLE(version-specific-runtime-libs, [ --enable-version-specific-runtime-libs specify that runtime libraries should be installed in a compiler-specific directory]) AC_ARG_WITH(slibdir, [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], slibdir="$with_slibdir", if test "${enable_version_specific_runtime_libs+set}" = set; then slibdir='$(libsubdir)' elif test "$host" != "$target"; then slibdir='$(build_tooldir)/lib' else slibdir='$(libdir)' fi) AC_SUBST(slibdir) # Nothing to do for FLOAT_H, float_format already handled. objdir=`pwd` AC_SUBST(objdir) # Process the language and host/target makefile fragments. ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file" # Substitute configuration variables AC_SUBST(subdirs) AC_SUBST(all_boot_languages) AC_SUBST(all_compilers) AC_SUBST(all_diff_excludes) AC_SUBST(all_headers) AC_SUBST(all_lang_makefiles) AC_SUBST(all_languages) AC_SUBST(all_lib2funcs) AC_SUBST(all_stagestuff) AC_SUBST(build_exeext) AC_SUBST(build_install_headers_dir) AC_SUBST(build_xm_file_list) AC_SUBST(build_xm_file) AC_SUBST(build_xm_defines) AC_SUBST(check_languages) AC_SUBST(cc_set_by_configure) AC_SUBST(quoted_cc_set_by_configure) AC_SUBST(cpp_install_dir) AC_SUBST(dep_host_xmake_file) AC_SUBST(dep_tmake_file) AC_SUBST(extra_c_flags) AC_SUBST(extra_headers_list) AC_SUBST(extra_objs) AC_SUBST(extra_parts) AC_SUBST(extra_passes) AC_SUBST(extra_programs) AC_SUBST(float_h_file) AC_SUBST(gcc_config_arguments) AC_SUBST(gcc_gxx_include_dir) AC_SUBST(libstdcxx_incdir) AC_SUBST(gcc_version) AC_SUBST(gcc_version_full) AC_SUBST(gcc_version_trigger) AC_SUBST(host_exeext) AC_SUBST(host_extra_gcc_objs) AC_SUBST(host_xm_file_list) AC_SUBST(host_xm_file) AC_SUBST(host_xm_defines) AC_SUBST(install) AC_SUBST(lang_options_files) AC_SUBST(lang_specs_files) AC_SUBST(lang_tree_files) AC_SUBST(local_prefix) AC_SUBST(md_file) AC_SUBST(objc_boehm_gc) AC_SUBST(out_file) AC_SUBST(out_object_file) AC_SUBST(stage_prefix_set_by_configure) AC_SUBST(symbolic_link) AC_SUBST(thread_file) AC_SUBST(tm_file_list) AC_SUBST(tm_file) AC_SUBST(tm_p_file_list) AC_SUBST(tm_p_file) AC_SUBST(xm_file) AC_SUBST(xm_defines) AC_SUBST(c_target_objs) AC_SUBST(cxx_target_objs) AC_SUBST(target_cpu_default) AC_SUBST_FILE(target_overrides) AC_SUBST_FILE(host_overrides) AC_SUBST(cross_defines) AC_SUBST_FILE(cross_overrides) AC_SUBST_FILE(build_overrides) AC_SUBST_FILE(language_fragments) AC_SUBST_FILE(language_hooks) # Echo that links are built if test x$host = x$target then str1="native " else str1="cross-" str2=" from $host" fi if test x$host != x$build then str3=" on a $build system" fi if test "x$str2" != x || test "x$str3" != x then str4= fi echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2 if test "x$str2" != x || test "x$str3" != x then echo " ${str2}${str3}." 1>&2 fi # Truncate the target if necessary if test x$host_truncate_target != x; then target=`echo $target | sed -e 's/\(..............\).*/\1/'` fi # Configure the subdirectories # AC_CONFIG_SUBDIRS($subdirs) # Create the Makefile # and configure language subdirectories AC_OUTPUT($all_outputs, [ case x$CONFIG_HEADERS in xauto-host.h:config.in) echo > cstamp-h ;; esac # If the host supports symlinks, point stage[1234] at ../stage[1234] so # bootstrapping and the installation procedure can still use # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks, # FLAGS_TO_PASS has been modified to solve the problem there. # This is virtually a duplicate of what happens in configure.lang; we do # an extra check to make sure this only happens if ln -s can be used. if test "$symbolic_link" = "ln -s"; then for d in .. ${subdirs} fixinc ; do if test $d != ..; then STARTDIR=`pwd` cd $d for t in stage1 stage2 stage3 stage4 include do rm -f $t $symbolic_link ../$t $t 2>/dev/null done cd $STARTDIR fi done else true ; fi # Avoid having to add intl to our include paths. if test -f intl/libintl.h; then echo creating libintl.h echo '#include "intl/libintl.h"' >libintl.h fi ], [ host='${host}' build='${build}' target='${target}' target_alias='${target_alias}' srcdir='${srcdir}' subdirs='${subdirs}' symbolic_link='${symbolic_link}' program_transform_set='${program_transform_set}' program_transform_name='${program_transform_name}' dep_host_xmake_file='${dep_host_xmake_file}' host_xmake_file='${host_xmake_file}' dep_tmake_file='${dep_tmake_file}' tmake_file='${tmake_file}' thread_file='${thread_file}' gcc_config_arguments='${gcc_config_arguments}' gcc_version='${gcc_version}' gcc_version_full='${gcc_version_full}' gcc_version_trigger='${gcc_version_trigger}' local_prefix='${local_prefix}' build_install_headers_dir='${build_install_headers_dir}' build_exeext='${build_exeext}' host_exeext='${host_exeext}' out_file='${out_file}' gdb_needs_out_file_path='${gdb_needs_out_file_path}' SET_MAKE='${SET_MAKE}' target_list='${target_list}' target_overrides='${target_overrides}' host_overrides='${host_overrides}' cross_defines='${cross_defines}' cross_overrides='${cross_overrides}' build_overrides='${build_overrides}' cpp_install_dir='${cpp_install_dir}' ])