# configure.ac for GCC # Process this file with autoconf to generate a configuration script. # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 # 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, 51 Franklin Street, Fifth Floor, Boston, MA #02110-1301, USA. # -------------------------------- # Initialization and sanity checks # -------------------------------- AC_PREREQ(2.59) AC_INIT AC_CONFIG_SRCDIR(tree.c) AC_CONFIG_HEADER(auto-host.h:config.in) gcc_version=`cat $srcdir/BASE-VER` # Determine the host, build, and target systems AC_CANONICAL_BUILD AC_CANONICAL_HOST AC_CANONICAL_TARGET # Determine the noncanonical target name, for directory use. ACX_NONCANONICAL_TARGET # Determine the target- and build-specific subdirectories GCC_TOPLEV_SUBDIRS # Set program_transform_name AC_ARG_PROGRAM # 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 "$gcc_exec_prefix_setting" != "ok"; then AC_MSG_ERROR([ *** GCC_EXEC_PREFIX shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # ----------- # Directories # ----------- # Specify the local prefix local_prefix= AC_ARG_WITH(local-prefix, [ --with-local-prefix=DIR specifies directory to put local include], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; no) ;; *) local_prefix=$with_local_prefix ;; esac]) # Default local prefix if it is empty if test x$local_prefix = x; then local_prefix=/usr/local fi # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only # passed in by the toplevel make and thus we'd get different behavior # depending on where we built the sources. gcc_gxx_include_dir= # Specify the g++ header file directory AC_ARG_WITH(gxx-include-dir, [ --with-gxx-include-dir=DIR specifies directory to put g++ header files], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; no) ;; *) gcc_gxx_include_dir=$with_gxx_include_dir ;; esac]) # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. if test x${gcc_gxx_include_dir} = x; then if test x${enable_version_specific_runtime_libs} = xyes; then gcc_gxx_include_dir='${libsubdir}/include/c++' else libstdcxx_incdir='include/c++/$(version)' if test x$host != x$target; then libstdcxx_incdir="$target_alias/$libstdcxx_incdir" fi changequote(<<, >>)dnl gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir" changequote([, ])dnl fi fi AC_ARG_WITH(cpp_install_dir, [ --with-cpp-install-dir=DIR install the user visible C preprocessor in DIR (relative to PREFIX) as well as PREFIX/bin], [if test x$withval = xyes; then AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) elif test x$withval != xno; then cpp_install_dir=$withval fi]) # We would like to our source tree to be readonly. However when releases or # pre-releases are generated, the flex/bison generated files as well as the # various formats of manuals need to be included along with the rest of the # sources. Therefore we have --enable-generated-files-in-srcdir to do # just that. AC_MSG_CHECKING([whether to place generated files in the source directory]) dnl generated-files-in-srcdir is disabled by default AC_ARG_ENABLE(generated-files-in-srcdir, [ --enable-generated-files-in-srcdir put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex.], generated_files_in_srcdir=$enableval, generated_files_in_srcdir=no) AC_MSG_RESULT($generated_files_in_srcdir) if test "$generated_files_in_srcdir" = "yes"; then GENINSRC='' else GENINSRC='#' fi AC_SUBST(GENINSRC) # ------------------- # Find default linker # ------------------- # With GNU ld AC_ARG_WITH(gnu-ld, [ --with-gnu-ld arrange to work with GNU ld.], gnu_ld_flag="$with_gnu_ld", gnu_ld_flag=no) # With pre-defined ld AC_ARG_WITH(ld, [ --with-ld arrange to use the specified ld (full pathname)], DEFAULT_LINKER="$with_ld") if test x"${DEFAULT_LINKER+set}" = x"set"; then if test ! -x "$DEFAULT_LINKER"; then AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. 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 AC_MSG_CHECKING([whether a default linker was specified]) if test x"${DEFAULT_LINKER+set}" = x"set"; then if test x"$gnu_ld_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) else AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) fi else AC_MSG_RESULT(no) fi # With demangler in GNU ld AC_ARG_WITH(demangler-in-ld, [ --with-demangler-in-ld try to use demangler in GNU ld.], demangler_in_ld="$with_demangler_in_ld", demangler_in_ld=no) # ---------------------- # Find default assembler # ---------------------- # With GNU as AC_ARG_WITH(gnu-as, [ --with-gnu-as arrange to work with GNU as], gas_flag="$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_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gas_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", [Define to enable the use of a default assembler.]) fi AC_MSG_CHECKING([whether a default assembler was specified]) if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test x"$gas_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) else AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) fi else AC_MSG_RESULT(no) fi # --------------- # Find C compiler # --------------- # If a non-executable a.out is present (e.g. created by GNU as above even if # invoked with -v only), the IRIX 6 native ld just overwrites the existing # file, even when creating an executable, so an execution test fails. # Remove possible default executable files to avoid this. # # FIXME: This really belongs into AC_PROG_CC and can be removed once # Autoconf includes it. rm -f a.out a.exe b.out # Find the native compiler AC_PROG_CC AM_PROG_CC_C_O # autoconf is lame and doesn't give us any substitution variable for this. if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then NO_MINUS_C_MINUS_O=yes else OUTPUT_OPTION='-o $@' fi AC_SUBST(NO_MINUS_C_MINUS_O) AC_SUBST(OUTPUT_OPTION) # Remove the -O2: for historical reasons, unless bootstrapping we prefer # optimizations to be activated explicitly by the toplevel. case "$CC" in */prev-gcc/xgcc*) ;; *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;; esac AC_SUBST(CFLAGS) # ------------------------- # Check C compiler features # ------------------------- AC_PROG_CPP AC_C_INLINE # sizeof(char) is 1 by definition. AC_CHECK_SIZEOF(void *) AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)]) # --------------------- # Warnings and checking # --------------------- # Check $CC warning features (if it's GCC). # We want to use -pedantic, but we don't want warnings about # * 'long long' # * variadic macros # * overlong strings # So, we only use -pedantic if we can disable those warnings. AC_CACHE_CHECK( [whether ${CC} accepts -Wno-long-long], [ac_cv_prog_cc_w_no_long_long], [save_CFLAGS="$CFLAGS" CFLAGS="-Wno-long-long" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_no_long_long=yes], [ac_cv_prog_cc_w_no_long_long=no]) CFLAGS="$save_CFLAGS" ]) AC_CACHE_CHECK( [whether ${CC} accepts -Wno-variadic-macros], [ac_cv_prog_cc_w_no_variadic_macros], [save_CFLAGS="$CFLAGS" CFLAGS="-Wno-variadic-macros" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_no_variadic_macros=yes], [ac_cv_prog_cc_w_no_variadic_macros=no]) CFLAGS="$save_CFLAGS" ]) AC_CACHE_CHECK( [whether ${CC} accepts -Wno-overlength-strings], [ac_cv_prog_cc_w_no_overlength_strings], [save_CFLAGS="$CFLAGS" CFLAGS="-Wno-overlength-strings" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_no_overlength_strings=yes], [ac_cv_prog_cc_w_no_overlength_strings=no]) CFLAGS="$save_CFLAGS" ]) strict1_warn= if test $ac_cv_prog_cc_w_no_long_long = yes \ && test $ac_cv_prog_cc_w_no_variadic_macros = yes \ && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings" fi # Add -Wold-style-definition if it's accepted AC_CACHE_CHECK( [whether ${CC} accepts -Wold-style-definition], [ac_cv_prog_cc_w_old_style_definition], [save_CFLAGS="$CFLAGS" CFLAGS="-Wold-style-definition" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_old_style_definition=yes], [ac_cv_prog_cc_w_old_style_definition=no]) CFLAGS="$save_CFLAGS" ]) if test $ac_cv_prog_cc_w_old_style_definition = yes ; then strict1_warn="${strict1_warn} -Wold-style-definition" fi # Add -Wmissing-format-attribute if it's accepted AC_CACHE_CHECK( [whether ${CC} accepts -Wmissing-format-attribute], [ac_cv_prog_cc_w_missing_format_attribute], [save_CFLAGS="$CFLAGS" CFLAGS="-Wmissing-format-attribute" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_missing_format_attribute=yes], [ac_cv_prog_cc_w_missing_format_attribute=no]) CFLAGS="$save_CFLAGS" ]) if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then strict1_warn="${strict1_warn} -Wmissing-format-attribute" fi # Enable -Werror, period. AC_ARG_ENABLE(werror_always, [ --enable-werror-always enable -Werror always], [], [enable_werror_always=no]) if test x${enable_werror_always} = xyes ; then strict1_warn="${strict1_warn} -Werror" WERROR=-Werror fi AC_SUBST(strict1_warn) # Get C++ compatibility warning flag, if supported. AC_CACHE_CHECK( [whether ${CC} accepts -Wc++-compat], [ac_cv_prog_cc_w_cxx_compat], [save_CFLAGS="$CFLAGS" CFLAGS="-Wc++-compat" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])], [ac_cv_prog_cc_w_cxx_compat=yes], [ac_cv_prog_cc_w_cxx_compat=no]) CFLAGS="$save_CFLAGS" ]) if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then cxx_compat_warn="-Wc++-compat" fi AC_SUBST(cxx_compat_warn) # If the native compiler is GCC, we can enable warnings even in stage1. # That's useful for people building cross-compilers, or just running a # quick `make'. warn_cflags= if test "x$GCC" = "xyes"; then warn_cflags='$(GCC_WARN_CFLAGS)' fi AC_SUBST(warn_cflags) # Enable -Werror in bootstrap stage2 and later. is_release= if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then is_release=yes fi AC_ARG_ENABLE(werror, [ --enable-werror enable -Werror in bootstrap stage2 and later], [], [if test x$is_release = x ; then # Default to "yes" on development branches. enable_werror=yes else # Default to "no" on release branches. enable_werror=no fi]) if test x$enable_werror = xyes ; then WERROR=-Werror fi AC_SUBST(WERROR) # Enable expensive internal checks AC_ARG_ENABLE(checking, [ --enable-checking[=LIST] enable expensive run-time checks. With LIST, enable only specific categories of checks. Categories are: yes,no,all,none,release. Flags are: assert,fold,gc,gcac,misc, rtlflag,rtl,runtime,tree,valgrind.], [ac_checking_flags="${enableval}"],[ # Determine the default checks. if test x$is_release = x ; then ac_checking_flags=yes else ac_checking_flags=release fi]) ac_assert_checking=1 ac_checking= ac_fold_checking= ac_gc_checking= ac_gc_always_collect= ac_rtl_checking= ac_rtlflag_checking= ac_runtime_checking=1 ac_tree_checking= ac_valgrind_checking= IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," for check in $ac_checking_flags do case $check in # these set all the flags to specific states yes) ac_assert_checking=1 ; ac_checking=1 ; ac_fold_checking= ; ac_gc_checking=1 ; ac_gc_always_collect= ; ac_rtl_checking= ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ;; no|none) ac_assert_checking= ; ac_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_gc_always_collect= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking= ; ac_tree_checking= ; ac_valgrind_checking= ;; all) ac_assert_checking=1 ; ac_checking=1 ; ac_fold_checking=1 ; ac_gc_checking=1 ; ac_gc_always_collect=1 ; ac_rtl_checking=1 ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ;; release) ac_assert_checking=1 ; ac_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_gc_always_collect= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking=1 ; ac_tree_checking= ; ac_valgrind_checking= ;; # these enable particular checks assert) ac_assert_checking=1 ;; fold) ac_fold_checking=1 ;; gc) ac_gc_checking=1 ;; gcac) ac_gc_always_collect=1 ;; misc) ac_checking=1 ;; rtl) ac_rtl_checking=1 ;; rtlflag) ac_rtlflag_checking=1 ;; runtime) ac_runtime_checking=1 ;; tree) ac_tree_checking=1 ;; valgrind) ac_valgrind_checking=1 ;; *) AC_MSG_ERROR(unknown check category $check) ;; esac done IFS="$ac_save_IFS" nocommon_flag="" # LLVM LOCAL # Expose a flag in the makefile so we can tell when ENABLE_CHECKING is set. checkingenabled_flag="" if test x$ac_checking != x ; then AC_DEFINE(ENABLE_CHECKING, 1, [Define if you want more run-time sanity checks. This one gets a grab bag of miscellaneous but relatively cheap checks.]) nocommon_flag=-fno-common # LLVM LOCAL checkingenabled_flag=CHECKING_ENABLED=1 fi # LLVM LOCAL AC_SUBST(checkingenabled_flag) AC_SUBST(nocommon_flag) if test x$ac_assert_checking != x ; then AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, [Define if you want assertions enabled. This is a cheap check.]) fi GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) if test x$ac_runtime_checking != x ; then AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, [Define if you want runtime assertions enabled. This is a cheap check.]) fi if test x$ac_tree_checking != x ; then AC_DEFINE(ENABLE_TREE_CHECKING, 1, [Define if you want all operations on trees (the basic data structure of the front ends) to be checked for dynamic type safety at runtime. This is moderately expensive. The tree browser debugging routines will also be enabled by this option. ]) TREEBROWSER=tree-browser.o fi AC_SUBST(TREEBROWSER) if test x$ac_rtl_checking != x ; then AC_DEFINE(ENABLE_RTL_CHECKING, 1, [Define if you want all operations on RTL (the basic data structure of the optimizer and back end) to be checked for dynamic type safety at runtime. This is quite expensive.]) fi if test x$ac_rtlflag_checking != x ; then AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, [Define if you want RTL flag accesses to be checked against the RTL codes that are supported for each access macro. This is relatively cheap.]) fi if test x$ac_gc_checking != x ; then AC_DEFINE(ENABLE_GC_CHECKING, 1, [Define if you want the garbage collector to do object poisoning and other memory allocation checks. This is quite expensive.]) fi if test x$ac_gc_always_collect != x ; then AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, [Define if you want the garbage collector to operate in maximally paranoid mode, validating the entire heap and collecting garbage at every opportunity. This is extremely expensive.]) fi if test x$ac_fold_checking != x ; then AC_DEFINE(ENABLE_FOLD_CHECKING, 1, [Define if you want fold checked that it never destructs its argument. This is quite expensive.]) fi valgrind_path_defines= valgrind_command= dnl # This check AC_REQUIREs various stuff, so it *must not* be inside dnl # an if statement. This was the source of very frustrating bugs dnl # in converting to autoconf 2.5x! AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) if test x$ac_valgrind_checking != x ; then # It is certainly possible that there's valgrind but no valgrind.h. # GCC relies on making annotations so we must have both. AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_valgrind_memcheck_h=yes], [gcc_cv_header_valgrind_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_memcheck_h=yes], [gcc_cv_header_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_memcheck_h) AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) if test "x$valgrind_path" = "x" \ || (test $have_valgrind_h = no \ && test $gcc_cv_header_memcheck_h = no \ && test $gcc_cv_header_valgrind_memcheck_h = no); then AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) fi valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' valgrind_command="$valgrind_path -q" AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, [Define if you want to run subprograms and generated programs through valgrind (a memory checker). This is extremely expensive.]) if test $gcc_cv_header_valgrind_memcheck_h = yes; then AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, [Define if valgrind's valgrind/memcheck.h header is installed.]) fi if test $gcc_cv_header_memcheck_h = yes; then AC_DEFINE(HAVE_MEMCHECK_H, 1, [Define if valgrind's memcheck.h header is installed.]) fi fi AC_SUBST(valgrind_path_defines) AC_SUBST(valgrind_command) AC_ARG_ENABLE(mapped-location, [ --enable-mapped-location location_t is fileline integer cookie],, enable_mapped_location=no) if test "$enable_mapped_location" = yes ; then AC_DEFINE(USE_MAPPED_LOCATION, 1, [Define if location_t is fileline integer cookie.]) fi # Enable code coverage collection AC_ARG_ENABLE(coverage, [ --enable-coverage[=LEVEL] enable compiler's code coverage collection. Use to measure compiler performance and locate unused parts of the compiler. With LEVEL, specify optimization. Values are opt, noopt, default is noopt], [case "${enableval}" in yes|noopt) coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0" ;; opt) coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2" ;; no) # a.k.a. --disable-coverage coverage_flags="" ;; *) AC_MSG_ERROR(unknown coverage setting $enableval) ;; esac], [coverage_flags=""]) AC_SUBST(coverage_flags) AC_ARG_ENABLE(gather-detailed-mem-stats, [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [], [enable_gather_detailed_mem_stats=no]) if test x$enable_gather_detailed_mem_stats = xyes ; then AC_DEFINE(GATHER_STATISTICS, 1, [Define to enable detailed memory allocation stats gathering.]) fi # ------------------------------- # Miscenalleous configure options # ------------------------------- # With stabs AC_ARG_WITH(stabs, [ --with-stabs arrange to use stabs instead of host debug format], stabs="$with_stabs", stabs=no) # Determine whether or not multilibs are enabled. AC_ARG_ENABLE(multilib, [ --enable-multilib enable library support for multiple ABIs], [], [enable_multilib=yes]) AC_SUBST(enable_multilib) # Enable __cxa_atexit for C++. AC_ARG_ENABLE(__cxa_atexit, [ --enable-__cxa_atexit enable __cxa_atexit for C++], [], []) # Enable C extension for decimal float if target supports it. 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then AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, [Define if you want to use __cxa_atexit, rather than atexit, to register C++ destructors for local statics and global objects. This is essential for fully standards-compliant handling of destructors, but requires __cxa_atexit in libc.]) fi fi use_getipinfo=yes if test x$with_system_libunwind = xyes; then if test x$host = x$target; then AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no]) fi fi GCC_TARGET_TEMPLATE(HAVE_GETIPINFO) if test x$use_getipinfo = xyes; then AC_DEFINE(HAVE_GETIPINFO, 1, [Define to 1 if system unwind library has _Unwind_GetIPInfo.]) else echo "The system unwind library does not support _Unwind_GetIPInfo." fi # Look for a file containing extra machine modes. if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then extra_modes_file='$(srcdir)'/config/${extra_modes} AC_SUBST(extra_modes_file) AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", [Define to the name of a file containing a list of extra machine modes for this architecture.]) fi # Convert extra_options into a form suitable for Makefile use. extra_opt_files= for f in $extra_options; do extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" done AC_SUBST(extra_opt_files) # auto-host.h is the file containing items generated by autoconf and is # the first file included by config.h. # If host=build, it is correct to have bconfig include auto-host.h # as well. If host!=build, we are in error and need to do more # work to find out the build config parameters. if test x$host = x$build then build_auto=auto-host.h 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}" \ ${realsrcdir}/configure \ --enable-languages=${enable_languages-all} \ --target=$target_alias --host=$build_alias --build=$build_alias CFLAGS="${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 $tempdir build_auto=auto-build.h fi AC_SUBST(build_subdir) tm_file="${tm_file} defaults.h" tm_p_file="${tm_p_file} tm-preds.h" host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" # We don't want ansidecl.h in target files, write code there in ISO/GNU C. # put this back in temporarily. xm_file="auto-host.h ansidecl.h ${xm_file}" # -------- # UNSORTED # -------- changequote(,)dnl # 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 # Double all backslashes and backslash all quotes to turn # gcc_config_arguments into a C string. sed -e 's/\\/\\\\/g; s/"/\\"/g' <conftest.out $gcc_config_arguments EOF gcc_config_arguments_str=`cat conftest.out` rm -f conftest.out cat > configargs.h <target assembler and hope that it will have the same features # as the host->target assembler we'll be using. gcc_cv_gas_major_version= gcc_cv_gas_minor_version= gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas m4_pattern_allow([AS_FOR_TARGET])dnl AS_VAR_SET_IF(gcc_cv_as,, [ if test -x "$DEFAULT_ASSEMBLER"; then gcc_cv_as="$DEFAULT_ASSEMBLER" elif test -f $gcc_cv_as_gas_srcdir/configure.in \ && test -f ../gas/Makefile \ && test x$build = x$host; then gcc_cv_as=../gas/as-new$build_exeext elif test -x as$build_exeext; then # Build using assembler in the current directory. gcc_cv_as=./as$build_exeext elif test -x $AS_FOR_TARGET; then gcc_cv_as="$AS_FOR_TARGET" else AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) fi]) ORIGINAL_AS_FOR_TARGET=$gcc_cv_as AC_SUBST(ORIGINAL_AS_FOR_TARGET) AC_MSG_CHECKING(what assembler to use) if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then # Single tree build which includes gas. We want to prefer it # over whatever linker top-level may have detected, since # we'll use what we're building after installation anyway. AC_MSG_RESULT(newly built gas) in_tree_gas=yes _gcc_COMPUTE_GAS_VERSION in_tree_gas_is_elf=no if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ || (grep 'obj_format = multi' ../gas/Makefile \ && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null then in_tree_gas_is_elf=yes fi else AC_MSG_RESULT($gcc_cv_as) in_tree_gas=no fi # Identify the linker which will work hand-in-glove with the newly # built GCC, so that we can examine its features. This is the linker # which will be driven by the driver program. # # If build != host, and we aren't building gas in-tree, we identify a # build->target linker and hope that it will have the same features # as the host->target linker we'll be using. gcc_cv_gld_major_version= gcc_cv_gld_minor_version= gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd AS_VAR_SET_IF(gcc_cv_ld,, [ if test -x "$DEFAULT_LINKER"; then gcc_cv_ld="$DEFAULT_LINKER" elif test -f $gcc_cv_ld_gld_srcdir/configure.in \ && test -f ../ld/Makefile \ && test x$build = x$host; then gcc_cv_ld=../ld/ld-new$build_exeext elif test -x collect-ld$build_exeext; then # Build using linker in the current directory. gcc_cv_ld=./collect-ld$build_exeext elif test -x $LD_FOR_TARGET; then gcc_cv_ld="$LD_FOR_TARGET" else AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) fi]) ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld AC_SUBST(ORIGINAL_LD_FOR_TARGET) AC_MSG_CHECKING(what linker to use) if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then # Single tree build which includes ld. We want to prefer it # over whatever linker top-level may have detected, since # we'll use what we're building after installation anyway. AC_MSG_RESULT(newly built ld) in_tree_ld=yes in_tree_ld_is_elf=no if (grep 'EMUL = .*elf' ../ld/Makefile \ || grep 'EMUL = .*linux' ../ld/Makefile \ || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then in_tree_ld_is_elf=yes fi for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in do changequote(,)dnl gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f` if test x$gcc_cv_gld_version != x; then break fi done gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` changequote([,])dnl else AC_MSG_RESULT($gcc_cv_ld) in_tree_ld=no fi # Figure out what nm we will be using. gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils AS_VAR_SET_IF(gcc_cv_nm,, [ if test -f $gcc_cv_binutils_srcdir/configure.in \ && test -f ../binutils/Makefile \ && test x$build = x$host; then gcc_cv_nm=../binutils/nm-new$build_exeext elif test -x nm$build_exeext; then gcc_cv_nm=./nm$build_exeext elif test -x $NM_FOR_TARGET; then gcc_cv_nm="$NM_FOR_TARGET" else AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) fi]) AC_MSG_CHECKING(what nm to use) if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built nm) in_tree_nm=yes else AC_MSG_RESULT($gcc_cv_nm) in_tree_nm=no fi ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm AC_SUBST(ORIGINAL_NM_FOR_TARGET) # Figure out what objdump we will be using. AS_VAR_SET_IF(gcc_cv_objdump,, [ if test -f $gcc_cv_binutils_srcdir/configure.in \ && test -f ../binutils/Makefile \ && test x$build = x$host; then # Single tree build which includes binutils. gcc_cv_objdump=../binutils/objdump$build_exeext elif test -x objdump$build_exeext; then gcc_cv_objdump=./objdump$build_exeext elif test -x $OBJDUMP_FOR_TARGET; then gcc_cv_objdump="$OBJDUMP_FOR_TARGET" else AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) fi]) AC_MSG_CHECKING(what objdump to use) if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built objdump) elif test x$gcc_cv_objdump = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_objdump) fi # Figure out what assembler alignment features are present. gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, [2,6,0],, [.balign 4 .p2align 2],, [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, [Define if your assembler supports .balign and .p2align.])]) gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, [2,8,0],, [.p2align 4,,7],, [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, [Define if your assembler supports specifying the maximum number of bytes to skip when using the GAS .p2align command.])]) # APPLE LOCAL begin mainline x86_64 literal16 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, [2,8,0],, [.literal16],, [AC_DEFINE(HAVE_GAS_LITERAL16, 1, [Define if your assembler supports .literal16.])]) # APPLE LOCAL end mainline x86_64 literal16 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, [elf,2,9,0],, [conftest_label1: .word 0 .subsection -1 conftest_label2: .word 0 .previous], [if test x$gcc_cv_nm != x; 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_subsection_m1=yes fi rm -f conftest.nm1 conftest.nm2 fi], [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, [Define if your assembler supports .subsection and .subsection -1 starts emitting at the beginning of your section.])]) gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, [2,2,0],, [ .weak foobar],, [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, [2,17,0],, [ .weakref foobar, barfnot],, [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, [2,15,91],, [ .SPACE $TEXT$ .NSUBSPA $CODE$,COMDAT],, [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) # .hidden needs to be supported in both the assembler and the linker, # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. # This is irritatingly difficult to feature test for; we have to check the # date string after the version number. If we've got an in-tree # ld, we don't know its patchlevel version, so we set the baseline at 2.13 # to be safe. # The gcc_GAS_CHECK_FEATURE call just sets a cache variable. gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, [elf,2,13,0],, [ .hidden foobar foobar:]) AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, [if test $in_tree_ld = yes ; then gcc_cv_ld_hidden=no if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_hidden=yes fi else gcc_cv_ld_hidden=yes ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then changequote(,)dnl ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ -].*$,\1,p'` ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` if test 0"$ld_date" -lt 20020404; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2002-04-04, fail gcc_cv_ld_hidden=no elif test -z "$ld_vers"; then # If there was no date string nor ld version number, something is wrong gcc_cv_ld_hidden=no else test -z "$ld_vers_patch" && ld_vers_patch=0 if test "$ld_vers_major" -lt 2; then gcc_cv_ld_hidden=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then gcc_cv_ld_hidden="no" elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then gcc_cv_ld_hidden=no fi fi changequote([,])dnl fi else case "${target}" in hppa64*-*-hpux* | ia64*-*-hpux*) gcc_cv_ld_hidden=yes ;; *) gcc_cv_ld_hidden=no ;; esac fi fi]) libgcc_visibility=no AC_SUBST(libgcc_visibility) GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then libgcc_visibility=yes AC_DEFINE(HAVE_GAS_HIDDEN, 1, [Define if your assembler and linker support .hidden.]) fi # Check if we have .[us]leb128, and support symbol arithmetic with it. gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, [elf,2,11,0],, [ .data .uleb128 L2 - L1 L1: .uleb128 1280 .sleb128 -1010 L2:], [# GAS versions before 2.11 do not support uleb128, # despite appearing to. # ??? There exists an elf-specific test that will crash # the assembler. Perhaps it's better to figure out whether # arbitrary sections are supported and try the test. as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` if echo "$as_ver" | grep GNU > /dev/null; then changequote(,)dnl # LLVM local as_ver=`echo $as_ver | sed -e 's/GNU assembler[^0-9]*\([0-9.][0-9.]*\).*/\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 && test $as_minor -lt 11 then : else gcc_cv_as_leb128=yes fi fi], [AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .sleb128 and .uleb128.])]) # GAS versions up to and including 2.11.0 may mis-optimize # .eh_frame data. gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, [elf,2,12,0],, [ .text .LFB1: .4byte 0 .L1: .4byte 0 .LFE1: .section .eh_frame,"aw",@progbits __FRAME_BEGIN__: .4byte .LECIE1-.LSCIE1 .LSCIE1: .4byte 0x0 .byte 0x1 .ascii "z\0" .byte 0x1 .byte 0x78 .byte 0x1a .byte 0x0 .byte 0x4 .4byte 1 .p2align 1 .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 .LASFDE1: .4byte .LASFDE1-__FRAME_BEGIN__ .4byte .LFB1 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .L1-.LFB1 .LEFDE1:], [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. cat > conftest.lit < conftest.big </dev/null \ | tail -3 > conftest.got \ && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ || diff -b conftest.big conftest.got > /dev/null 2>&1; } then gcc_cv_as_eh_frame=yes elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then gcc_cv_as_eh_frame=buggy else # Uh oh, what do we do now? gcc_cv_as_eh_frame=no fi]) if test $gcc_cv_as_eh_frame = buggy; then AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, [Define if your assembler mis-optimizes .eh_frame data.]) fi gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [elf,2,12,0], [--fatal-warnings], [.section .rodata.str, "aMS", @progbits, 1]) if test $gcc_cv_as_shf_merge = no; then gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [elf,2,12,0], [--fatal-warnings], [.section .rodata.str, "aMS", %progbits, 1]) fi AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group, [elf,2,16,0], [--fatal-warnings], [.section .text,"axG",@progbits,.foo,comdat]) if test $gcc_cv_as_comdat_group = yes; then gcc_cv_as_comdat_group_percent=no else gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent, [elf,2,16,0], [--fatal-warnings], [.section .text,"axG",%progbits,.foo,comdat]) fi if test $in_tree_ld != yes && test x"$ld_vers" != x; then comdat_group=yes if test 0"$ld_date" -lt 20050308; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2005-03-08, fail comdat_group=no elif test "$ld_vers_major" -lt 2; then comdat_group=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then comdat_group=no fi fi else # assume linkers other than GNU ld don't support COMDAT group comdat_group=no fi if test $comdat_group = no; then gcc_cv_as_comdat_group=no gcc_cv_as_comdat_group_percent=no fi AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support COMDAT groups.]) # Thread-local storage - the check is heavily parametrized. conftest_s= tls_first_major= tls_first_minor= tls_as_opt= case "$target" in changequote(,)dnl alpha*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text ldq $27,__tls_get_addr($29) !literal!1 lda $16,foo($29) !tlsgd!1 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 ldq $27,__tls_get_addr($29) !literal!2 lda $16,foo($29) !tlsldm!2 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 ldq $1,foo($29) !gotdtprel ldah $2,foo($29) !dtprelhi lda $3,foo($2) !dtprello lda $4,foo($29) !dtprel ldq $1,foo($29) !gottprel ldah $2,foo($29) !tprelhi lda $3,foo($2) !tprello lda $4,foo($29) !tprel' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; frv*-*-*) conftest_s=' .section ".tdata","awT",@progbits x: .long 25 .text call #gettlsoff(x)' tls_first_major=2 tls_first_minor=14 ;; hppa*-*-linux*) conftest_s=' t1: .reg %r20 t2: .reg %r21 gp: .reg %r19 .section ".tdata","awT",@progbits foo: .long 25 .text .align 4 addil LT%foo-$tls_gdidx$,gp ldo RT%foo-$tls_gdidx$(%r1),%arg0 b __tls_get_addr nop addil LT%foo-$tls_ldidx$,gp b __tls_get_addr ldo RT%foo-$tls_ldidx$(%r1),%arg0 addil LR%foo-$tls_dtpoff$,%ret0 ldo RR%foo-$tls_dtpoff$(%r1),%t1 mfctl %cr27,%t1 addil LT%foo-$tls_ieoff$,gp ldw RT%foo-$tls_ieoff$(%r1),%t2 add %t1,%t2,%t3 mfctl %cr27,%t1 addil LR%foo-$tls_leoff$,%t1 ldo RR%foo-$tls_leoff$(%r1),%t2' tls_first_major=2 tls_first_minor=15 tls_as_opt=--fatal-warnings ;; arm*-*-*) conftest_s=' .section ".tdata","awT",%progbits foo: .long 25 .text .word foo(gottpoff) .word foo(tpoff) .word foo(tlsgd) .word foo(tlsldm) .word foo(tlsldo)' tls_first_major=2 tls_first_minor=17 ;; i[34567]86-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text movl %gs:0, %eax leal foo@TLSGD(,%ebx,1), %eax leal foo@TLSLDM(%ebx), %eax leal foo@DTPOFF(%eax), %edx movl foo@GOTTPOFF(%ebx), %eax subl foo@GOTTPOFF(%ebx), %eax addl foo@GOTNTPOFF(%ebx), %eax movl foo@INDNTPOFF, %eax movl $foo@TPOFF, %eax subl $foo@TPOFF, %eax leal foo@NTPOFF(%ecx), %eax' tls_first_major=2 tls_first_minor=14 tls_as_opt=--fatal-warnings ;; x86_64-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text movq %fs:0, %rax leaq foo@TLSGD(%rip), %rdi leaq foo@TLSLD(%rip), %rdi leaq foo@DTPOFF(%rax), %rdx movq foo@GOTTPOFF(%rip), %rax movq $foo@TPOFF, %rax' tls_first_major=2 tls_first_minor=14 tls_as_opt=--fatal-warnings ;; ia64-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: data8 25 .text addl r16 = @ltoff(@dtpmod(foo#)), gp addl r17 = @ltoff(@dtprel(foo#)), gp addl r18 = @ltoff(@tprel(foo#)), gp addl r19 = @dtprel(foo#), gp adds r21 = @dtprel(foo#), r13 movl r23 = @dtprel(foo#) addl r20 = @tprel(foo#), gp adds r22 = @tprel(foo#), r13 movl r24 = @tprel(foo#)' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; mips*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text addiu $4, $28, %tlsgd(x) addiu $4, $28, %tlsldm(x) lui $4, %dtprel_hi(x) addiu $4, $4, %dtprel_lo(x) lw $4, %gottprel(x)($28) lui $4, %tprel_hi(x) addiu $4, $4, %tprel_lo(x)' tls_first_major=2 tls_first_minor=16 tls_as_opt='-32 --fatal-warnings' ;; powerpc-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 2 ld0: .space 4 ld1: .space 4 x1: .space 4 x2: .space 4 x3: .space 4 .text addi 3,31,ld0@got@tlsgd bl __tls_get_addr addi 3,31,x1@got@tlsld bl __tls_get_addr addi 9,3,x1@dtprel addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l lwz 9,x3@got@tprel(31) add 9,9,x@tls addi 9,2,x1@tprel addis 9,2,x2@tprel@ha addi 9,9,x2@tprel@l' tls_first_major=2 tls_first_minor=14 tls_as_opt="-a32 --fatal-warnings" ;; powerpc64-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 3 ld0: .space 8 ld1: .space 8 x1: .space 8 x2: .space 8 x3: .space 8 .text addi 3,2,ld0@got@tlsgd bl .__tls_get_addr nop addi 3,2,ld1@toc bl .__tls_get_addr nop addi 3,2,x1@got@tlsld bl .__tls_get_addr nop addi 9,3,x1@dtprel bl .__tls_get_addr nop addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l bl .__tls_get_addr nop ld 9,x3@got@dtprel(2) add 9,9,3 bl .__tls_get_addr nop' tls_first_major=2 tls_first_minor=14 tls_as_opt="-a64 --fatal-warnings" ;; s390-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@NTPOFF .long foo@GOTNTPOFF .long foo@INDNTPOFF l %r1,foo@GOTNTPOFF(%r12) l %r1,0(%r1):tls_load:foo bas %r14,0(%r1,%r13):tls_gdcall:foo bas %r14,0(%r1,%r13):tls_ldcall:foo' tls_first_major=2 tls_first_minor=14 tls_as_opt="-m31 --fatal-warnings" ;; s390x-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .quad foo@TLSGD .quad foo@TLSLDM .quad foo@DTPOFF .quad foo@NTPOFF .quad foo@GOTNTPOFF lg %r1,foo@GOTNTPOFF(%r12) larl %r1,foo@INDNTPOFF brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' tls_first_major=2 tls_first_minor=14 tls_as_opt="-m64 -Aesame --fatal-warnings" ;; sh-*-* | sh[34]-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@GOTTPOFF .long foo@TPOFF' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; sparc*-*-*) case "$target" in sparc*-sun-solaris2.[56789]*) # TLS was introduced in the Solaris 9 4/04 release but # we do not enable it by default on Solaris 9 either. if test "x$enable_tls" = xyes ; then on_solaris=yes else enable_tls=no; fi ;; sparc*-sun-solaris2.*) on_solaris=yes ;; *) on_solaris=no ;; esac if test x$on_solaris = xyes && test x$gas_flag = xno; then conftest_s=' .section ".tdata",#alloc,#write,#tls foo: .long 25 .text sethi %tgd_hi22(foo), %o0 add %o0, %tgd_lo10(foo), %o1 add %l7, %o1, %o0, %tgd_add(foo) call __tls_get_addr, %tgd_call(foo) sethi %tldm_hi22(foo), %l1 add %l1, %tldm_lo10(foo), %l2 add %l7, %l2, %o0, %tldm_add(foo) call __tls_get_addr, %tldm_call(foo) sethi %tldo_hix22(foo), %l3 xor %l3, %tldo_lox10(foo), %l4 add %o0, %l4, %l5, %tldo_add(foo) sethi %tie_hi22(foo), %o3 add %o3, %tie_lo10(foo), %o3 ld [%l7 + %o3], %o2, %tie_ld(foo) add %g7, %o2, %o4, %tie_add(foo) sethi %tle_hix22(foo), %l1 xor %l1, %tle_lox10(foo), %o5 ld [%g7 + %o5], %o1' tls_first_major=0 tls_first_minor=0 else conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text sethi %tgd_hi22(foo), %o0 add %o0, %tgd_lo10(foo), %o1 add %l7, %o1, %o0, %tgd_add(foo) call __tls_get_addr, %tgd_call(foo) sethi %tldm_hi22(foo), %l1 add %l1, %tldm_lo10(foo), %l2 add %l7, %l2, %o0, %tldm_add(foo) call __tls_get_addr, %tldm_call(foo) sethi %tldo_hix22(foo), %l3 xor %l3, %tldo_lox10(foo), %l4 add %o0, %l4, %l5, %tldo_add(foo) sethi %tie_hi22(foo), %o3 add %o3, %tie_lo10(foo), %o3 ld [%l7 + %o3], %o2, %tie_ld(foo) add %g7, %o2, %o4, %tie_add(foo) sethi %tle_hix22(foo), %l1 xor %l1, %tle_lox10(foo), %o5 ld [%g7 + %o5], %o1' tls_first_major=2 tls_first_minor=14 tls_as_opt="-32 --fatal-warnings" fi ;; changequote([,])dnl esac set_have_as_tls=no if test "x$enable_tls" = xno ; then : # TLS explicitly disabled. elif test "x$enable_tls" = xyes ; then set_have_as_tls=yes # TLS explicitly enabled. elif test -z "$tls_first_major"; then : # If we don't have a check, assume no support. else gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, [set_have_as_tls=yes]) fi if test $set_have_as_tls = yes ; then AC_DEFINE(HAVE_AS_TLS, 1, [Define if your assembler supports thread-local storage.]) fi # Target-specific assembler checks. AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) gcc_cv_ld_static_dynamic=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then gcc_cv_ld_static_dynamic=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -Bstatic/-Bdynamic option if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \ && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then gcc_cv_ld_static_dynamic=yes fi fi if test x"$gcc_cv_ld_static_dynamic" = xyes; then AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, [Define if your linker supports -Bstatic/-Bdynamic option.]) fi AC_MSG_RESULT($gcc_cv_ld_static_dynamic) if test x"$demangler_in_ld" = xyes; then AC_MSG_CHECKING(linker --demangle support) gcc_cv_ld_demangle=no if test $in_tree_ld = yes; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ gcc_cv_ld_demangle=yes fi elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then # Check if the GNU linker supports --demangle option if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then gcc_cv_ld_demangle=yes fi fi if test x"$gcc_cv_ld_demangle" = xyes; then AC_DEFINE(HAVE_LD_DEMANGLE, 1, [Define if your linker supports --demangle option.]) fi AC_MSG_RESULT($gcc_cv_ld_demangle) fi case "$target" in # All TARGET_ABI_OSF targets. alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_alpha_explicit_relocs, [2,12,0],, [ .set nomacro .text extbl $3, $2, $3 !lituse_bytoff!1 ldq $2, a($29) !literal!1 ldq $4, b($29) !literal!2 ldq_u $3, 0($2) !lituse_base!1 ldq $27, f($29) !literal!5 jsr $26, ($27), f !lituse_jsr!5 ldah $29, 0($26) !gpdisp!3 lda $0, c($29) !gprel ldah $1, d($29) !gprelhigh lda $1, d($1) !gprellow lda $29, 0($29) !gpdisp!3],, [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, [Define if your assembler supports explicit relocations.])]) gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, [ .set nomacro .text ldq $27, a($29) !literal!1 jsr $26, ($27), a !lituse_jsrdirect!1],, [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, [Define if your assembler supports the lituse_jsrdirect relocation.])]) ;; cris-*-*) gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], gcc_cv_as_cris_no_mul_bug,[2,15,91], [-no-mul-bug-abort], [.text],, [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, [Define if your assembler supports the -no-mul-bug-abort option.])]) ;; sparc*-*-*) gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, [.register %g2, #scratch],, [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, [Define if your assembler supports .register.])]) gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, [-relax], [.text],, [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.])]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], gcc_cv_as_sparc_ua_pcrel,, [-K PIC], [.text foo: nop .data .align 4 .byte 0 .uaword %r_disp32(foo)], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_sparc_ua_pcrel=yes fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, [Define if your assembler and linker support unaligned PC relative relocs.]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], gcc_cv_as_sparc_ua_pcrel_hidden,, [-K PIC], [.data .align 4 .byte 0x31 .uaword %r_disp32(foo) .byte 0x32, 0x33, 0x34 .global foo .hidden foo foo: .skip 4], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ | grep ' 31000000 07323334' > /dev/null 2>&1; then if $gcc_cv_objdump -R conftest 2> /dev/null \ | grep 'DISP32' > /dev/null 2>&1; then : else gcc_cv_as_sparc_ua_pcrel_hidden=yes fi fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) ]) # unaligned pcrel relocs gcc_GAS_CHECK_FEATURE([offsetable %lo()], gcc_cv_as_sparc_offsetable_lo10,, [-xarch=v9], [.text or %g1, %lo(ab) + 12, %g1 or %g1, %lo(ab + 12), %g1], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ | grep ' 82106000 82106000' > /dev/null 2>&1; then gcc_cv_as_sparc_offsetable_lo10=yes fi], [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, [Define if your assembler supports offsetable %lo().])]) ;; changequote(,)dnl i[34567]86-*-* | x86_64-*-*) changequote([,])dnl case $target_os in cygwin* | pe | mingw32*) # Used for DWARF 2 in PE gcc_GAS_CHECK_FEATURE([.secrel32 relocs], gcc_cv_as_ix86_pe_secrel32, [2,15,91],, [.text foo: nop .data .secrel32 foo], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_as_ix86_pe_secrel32=yes fi rm -f conftest], [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) ;; esac gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], gcc_cv_as_ix86_filds_fists, [2,9,0],, [filds mem; fists mem],, [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1, [Define if your assembler uses the new HImode fild and fist notation.])]) gcc_GAS_CHECK_FEATURE([cmov syntax], gcc_cv_as_ix86_cmov_sun_syntax,,, [cmovl.l %edx, %eax],, [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, [Define if your assembler supports the Sun syntax for cmov.])]) gcc_GAS_CHECK_FEATURE([ffreep mnemonic], gcc_cv_as_ix86_ffreep,,, [ffreep %st(1)],, [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, [Define if your assembler supports the ffreep mnemonic.])]) # This one is used unconditionally by i386.[ch]; it is to be defined # to 1 if the feature is present, 0 otherwise. gcc_GAS_CHECK_FEATURE([GOTOFF in data], gcc_cv_as_ix86_gotoff_in_data, [2,11,0],, [ .text .L0: nop .data .long .L0@GOTOFF]) AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], [Define true if the assembler supports '.long foo@GOTOFF'.]) ;; ia64*-*-*) gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, [ .text addl r15 = @ltoffx(x#), gp ;; ld8.mov r16 = [[r15]], x#],, [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, [Define if your assembler supports ltoffx and ldxmov relocations.])]) ;; powerpc*-*-*) case $target in *-*-aix*) conftest_s=' .machine "pwr5" .csect .text[[PR]] mfcr 3,128';; *-*-darwin*) gcc_GAS_CHECK_FEATURE([.machine directive support], gcc_cv_as_machine_directive,,, [ .machine ppc7400]) if test x$gcc_cv_as_machine_directive != xyes; then echo "*** This target requires an assembler supporting \".machine\"" >&2 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 test x$build = x$target && exit 1 fi conftest_s=' .text mfcr r3,128';; *) conftest_s=' .machine power4 .text mfcr 3,128';; esac gcc_GAS_CHECK_FEATURE([mfcr field support], gcc_cv_as_powerpc_mfcrf, [2,14,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_MFCRF, 1, [Define if your assembler supports mfcr field.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr5" .csect .text[[PR]] popcntb 3,3';; *) conftest_s=' .machine power5 .text popcntb 3,3';; esac gcc_GAS_CHECK_FEATURE([popcntb support], gcc_cv_as_powerpc_popcntb, [2,17,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_POPCNTB, 1, [Define if your assembler supports popcntb field.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr5x" .csect .text[[PR]] frin 1,1';; *) conftest_s=' .machine power5 .text frin 1,1';; esac gcc_GAS_CHECK_FEATURE([fp round support], gcc_cv_as_powerpc_fprnd, [2,17,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_FPRND, 1, [Define if your assembler supports fprnd.])]) case $target in *-*-aix*) conftest_s=' .csect .text[[PR]] LCF..0: addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; *-*-darwin*) conftest_s=' .text LCF0: addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; *) conftest_s=' .text .LCF0: addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; esac gcc_GAS_CHECK_FEATURE([rel16 relocs], gcc_cv_as_powerpc_rel16, [2,17,0], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_REL16, 1, [Define if your assembler supports R_PPC_REL16 relocs.])]) ;; mips*-*-*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_mips_explicit_relocs, [2,14,0],, [ lw $4,%gp_rel(foo)($4)],, [if test x$target_cpu_default = x then target_cpu_default=MASK_EXPLICIT_RELOCS else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" fi]) ;; esac # Mips and HP-UX need the GNU assembler. # Linux on IA64 might be able to use the Intel assembler. case "$target" in mips*-*-* | *-*-hpux* ) if test x$gas_flag = xyes \ || test x"$host" != x"$build" \ || test ! -x "$gcc_cv_as" \ || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then : else echo "*** This configuration requires the GNU assembler" >&2 exit 1 fi ;; esac # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any # info to the output file. So, as supported targets are added to gas 2.11, # add some instruction here to (also) show we expect this might work. # ??? Once 2.11 is released, probably need to add first known working # version to the per-target configury. case "$target" in i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \ | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \ | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-* | score*-*-*) insn="nop" ;; ia64*-*-* | s390*-*-*) insn="nop 0" ;; mmix-*-*) insn="swym 0" ;; esac if test x"$insn" != x; then conftest_s="\ .file 1 \"conftest.s\" .loc 1 3 0 $insn" gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], gcc_cv_as_dwarf2_debug_line, [elf,2,11,0],, [$conftest_s], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -h conftest.o 2> /dev/null \ | grep debug_line > /dev/null 2>&1; then gcc_cv_as_dwarf2_debug_line=yes fi]) # 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. gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], gcc_cv_as_dwarf2_file_buggy,,, [ .file 1 "foo.s" .file 1 "bar.s"]) if test $gcc_cv_as_dwarf2_debug_line = yes \ && test $gcc_cv_as_dwarf2_file_buggy = no; then AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, [Define if your assembler supports dwarf2 .file/.loc directives, and preserves file table indices exactly as given.]) fi gcc_GAS_CHECK_FEATURE([--gdwarf2 option], gcc_cv_as_gdwarf2_flag, [elf,2,11,0], [--gdwarf2], [$insn],, [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, [Define if your assembler supports the --gdwarf2 option.])]) gcc_GAS_CHECK_FEATURE([--gstabs option], gcc_cv_as_gstabs_flag, [elf,2,11,0], [--gstabs], [$insn], [# The native Solaris 9/Intel assembler doesn't understand --gstabs # and warns about it, but still exits successfully. So check for # this. if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null]) then : else gcc_cv_as_gstabs_flag=yes fi], [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, [Define if your assembler supports the --gstabs option.])]) fi AC_MSG_CHECKING(linker read-only and read-write section mixing) gcc_cv_ld_ro_rw_mix=unknown if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_ro_rw_mix=read-write fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then echo '.section myfoosect, "a"' > conftest1.s echo '.section myfoosect, "aw"' > conftest2.s echo '.byte 1' >> conftest2.s echo '.section myfoosect, "a"' > conftest3.s echo '.byte 0' >> conftest3.s if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ conftest2.o conftest3.o > /dev/null 2>&1; then gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ | sed -e '/myfoosect/!d' -e N` if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then gcc_cv_ld_ro_rw_mix=read-only else gcc_cv_ld_ro_rw_mix=read-write fi fi fi changequote(,)dnl rm -f conftest.* conftest[123].* changequote([,])dnl fi if test x$gcc_cv_ld_ro_rw_mix = xread-write; then AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, [Define if your linker links a mix of read-only and read-write sections into a read-write section.]) fi AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) gcc_cv_ld_eh_frame_hdr=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_frame_hdr=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports --eh-frame-hdr option if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then gcc_cv_ld_eh_frame_hdr=yes fi fi GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, [Define if your linker supports --eh-frame-hdr option.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) AC_MSG_CHECKING(linker position independent executable support) gcc_cv_ld_pie=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_pie=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -pie option if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then gcc_cv_ld_pie=yes fi fi if test x"$gcc_cv_ld_pie" = xyes; then AC_DEFINE(HAVE_LD_PIE, 1, [Define if your linker supports -pie option.]) fi AC_MSG_RESULT($gcc_cv_ld_pie) # -------- # UNSORTED # -------- AC_CACHE_CHECK(linker --as-needed support, gcc_cv_ld_as_needed, [gcc_cv_ld_as_needed=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_as_needed=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports --as-needed and --no-as-needed options if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then gcc_cv_ld_as_needed=yes fi fi ]) if test x"$gcc_cv_ld_as_needed" = xyes; then AC_DEFINE(HAVE_LD_AS_NEEDED, 1, [Define if your linker supports --as-needed and --no-as-needed options.]) fi case "$target:$tm_file" in powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) AC_CACHE_CHECK(linker support for omitting dot symbols, gcc_cv_ld_no_dot_syms, [gcc_cv_ld_no_dot_syms=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_no_dot_syms=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then gcc_cv_ld_no_dot_syms=yes fi rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s fi ]) if test x"$gcc_cv_ld_no_dot_syms" = xyes; then AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, [Define if your PowerPC64 linker only needs function descriptor syms.]) fi ;; esac AC_CACHE_CHECK(linker --sysroot support, gcc_cv_ld_sysroot, [gcc_cv_ld_sysroot=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then gcc_cv_ld_sysroot=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then gcc_cv_ld_sysroot=yes fi fi]) if test x"$gcc_cv_ld_sysroot" = xyes; then AC_DEFINE(HAVE_LD_SYSROOT, 1, [Define if your linker supports --sysroot.]) fi if test x$with_sysroot = x && test x$host = x$target \ && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", [Define to PREFIX/include if cpp should also search that directory.]) fi # APPLE LOCAL begin mainline # Test for stack protector support in target C library. AC_CACHE_CHECK(__stack_chk_fail in target C library, gcc_cv_libc_provides_ssp, [gcc_cv_libc_provides_ssp=no case "$target" in *-*-linux*) if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then if test "x$with_sysroot" = x; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" elif test "x$with_sysroot" = xyes; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" else glibc_header_dir="${with_sysroot}/usr/include" fi else glibc_header_dir=/usr/include fi # glibc 2.4 and later provides __stack_chk_fail and # either __stack_chk_guard, or TLS access to stack guard canary. if test -f $glibc_header_dir/features.h \ && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ $glibc_header_dir/features.h > /dev/null; then if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \ $glibc_header_dir/features.h > /dev/null; then gcc_cv_libc_provides_ssp=yes elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \ $glibc_header_dir/features.h > /dev/null \ && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ $glibc_header_dir/features.h > /dev/null; then gcc_cv_libc_provides_ssp=yes fi fi ;; *-*-darwin*) AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], [echo "no __stack_chk_fail on this target"]) ;; *) gcc_cv_libc_provides_ssp=no ;; esac]) # APPLE LOCAL end mainline if test x$gcc_cv_libc_provides_ssp = xyes; then AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, [Define if your target C library provides stack protector support]) fi # Check if TFmode long double should be used by default or not. # Some glibc targets used DFmode long double, but with glibc 2.4 # and later they can use TFmode. case "$target" in powerpc*-*-*gnu* | \ sparc*-*-linux* | \ s390*-*-linux* | \ alpha*-*-linux*) AC_ARG_WITH(long-double-128, [ --with-long-double-128 Use 128-bit long double by default.], gcc_cv_target_ldbl128="$with_long_double_128", [gcc_cv_target_ldbl128=no if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then if test "x$with_sysroot" = x; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" elif test "x$with_sysroot" = xyes; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" else glibc_header_dir="${with_sysroot}/usr/include" fi else glibc_header_dir=/usr/include fi changequote(,)dnl grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \ && gcc_cv_target_ldbl128=yes changequote([,])dnl ]) ;; esac if test x$gcc_cv_target_ldbl128 = xyes; then AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, [Define if TFmode long double should be the default]) fi # Find out what GC implementation we want, or may, use. AC_ARG_WITH(gc, [ --with-gc={page,zone} choose the garbage collection mechanism to use with the compiler], [case "$withval" in page) GGC=ggc-$withval ;; zone) GGC=ggc-$withval AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use]) ;; *) AC_MSG_ERROR([$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 # -------------- # Language hooks # -------------- # 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. subdirs= lang_opt_files= lang_specs_files= lang_tree_files= # 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_outputs='Makefile gccbug mklibgcc libada-mk' # List of language makefile fragments. all_lang_makefrags= # List of language subdirectory makefiles. Deprecated. all_lang_makefiles= # Files for gengtype all_gtfiles="$target_gtfiles" # Files for gengtype with language all_gtfiles_files_langs= all_gtfiles_files_files= # These are the languages that are set in --enable-languages, # and are available in the GCC tree. all_selected_languages= # 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_hooks="Make-hooks" for lang in ${srcdir}/*/config-lang.in do changequote(,)dnl test "$lang" = "${srcdir}/*/config-lang.in" && continue lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` if test "x$lang_alias" = x then echo "$lang doesn't set \$language." 1>&2 exit 1 fi subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" subdirs="$subdirs $subdir" case ",$enable_languages," in *,$lang_alias,*) all_selected_languages="$all_selected_languages $lang_alias" if test -f $srcdir/$subdir/lang-specs.h; then lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h" fi ;; esac changequote([,])dnl language= boot_language= compilers= stagestuff= outputs= gtfiles= subdir_requires= . ${srcdir}/$subdir/config-lang.in if test "x$language" = x then echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2 exit 1 fi ok=: case ",$enable_languages," in *,$lang_alias,*) ;; *) for i in $subdir_requires; do test -f "${srcdir}/$i/config-lang.in" && continue ok=false break done ;; esac $ok || continue all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in" if test -f $srcdir/$subdir/lang.opt; then lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt" fi if test -f $srcdir/$subdir/$subdir-tree.def; then lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def" fi if test -f ${srcdir}/$subdir/Makefile.in then all_lang_makefiles="$subdir/Makefile" fi all_languages="$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 $stagestuff" all_outputs="$all_outputs $outputs" all_gtfiles="$all_gtfiles $gtfiles" for f in $gtfiles do all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} " all_gtfiles_files_files="$all_gtfiles_files_files ${f} " done done # Pick up gtfiles for c gtfiles= subdir="c" . ${srcdir}/c-config-lang.in all_gtfiles="$all_gtfiles $gtfiles" for f in $gtfiles do all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} " all_gtfiles_files_files="$all_gtfiles_files_files ${f} " done check_languages= for language in $all_selected_languages do check_languages="$check_languages check-$language" done # We link each language in with a set of hooks, reached indirectly via # lang.${target}. Only do so for selected languages. rm -f Make-hooks touch Make-hooks target_list="all.cross start.encap rest.encap tags \ install-common install-man install-info dvi pdf html \ uninstall info man srcextra srcman srcinfo \ mostlyclean clean distclean maintainer-clean \ stage1 stage2 stage3 stage4 stageprofile stagefeedback" for t in $target_list do x= for lang in $all_selected_languages do x="$x $lang.$t" done echo "lang.$t: $x" >> Make-hooks done # -------- # UNSORTED # -------- # 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 # 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)/../$(target_noncanonical)' else changequote(<<, >>)dnl # An explanation of the sed strings: # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix' # -e 's|/$||' 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_noncanonical)" 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='$(libdir)' fi) AC_SUBST(slibdir) objdir=`${PWDCMD-pwd}` AC_SUBST(objdir) AC_ARG_WITH(datarootdir, [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]], datarootdir="\${prefix}/$with_datarootdir", datarootdir='$(prefix)/share') AC_SUBST(datarootdir) AC_ARG_WITH(docdir, [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]], docdir="\${prefix}/$with_docdir", docdir='$(datarootdir)') AC_SUBST(docdir) AC_ARG_WITH(htmldir, [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]], htmldir="\${prefix}/$with_htmldir", htmldir='$(docdir)') AC_SUBST(htmldir) # Substitute configuration variables AC_SUBST(subdirs) AC_SUBST(srcdir) AC_SUBST(all_boot_languages) AC_SUBST(all_compilers) AC_SUBST(all_gtfiles) AC_SUBST(all_gtfiles_files_langs) AC_SUBST(all_gtfiles_files_files) AC_SUBST(all_lang_makefrags) AC_SUBST(all_lang_makefiles) AC_SUBST(all_languages) AC_SUBST(all_selected_languages) AC_SUBST(all_stagestuff) AC_SUBST(build_exeext) AC_SUBST(build_install_headers_dir) AC_SUBST(build_xm_file_list) AC_SUBST(build_xm_include_list) 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(xmake_file) AC_SUBST(tmake_file) AC_SUBST(extra_gcc_objs) 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(host_exeext) AC_SUBST(host_xm_file_list) AC_SUBST(host_xm_include_list) AC_SUBST(host_xm_defines) AC_SUBST(out_host_hook_obj) AC_SUBST(install) AC_SUBST(lang_opt_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) # LLVM LOCAL AC_SUBST(out_cxx_file) AC_SUBST(out_object_file) # LLVM LOCAL AC_SUBST(out_cxx_object_file) AC_SUBST(stage_prefix_set_by_configure) AC_SUBST(quoted_stage_prefix_set_by_configure) AC_SUBST(thread_file) AC_SUBST(tm_file_list) AC_SUBST(tm_include_list) AC_SUBST(tm_defines) AC_SUBST(tm_p_file_list) AC_SUBST(tm_p_include_list) AC_SUBST(xm_file_list) AC_SUBST(xm_include_list) AC_SUBST(xm_defines) AC_SUBST(c_target_objs) AC_SUBST(cxx_target_objs) AC_SUBST(target_cpu_default) AC_SUBST_FILE(language_hooks) # Echo link setup. if test x${build} = x${host} ; then if test x${host} = x${target} ; then echo "Links are now set up to build a native compiler for ${target}." 1>&2 else echo "Links are now set up to build a cross-compiler" 1>&2 echo " from ${host} to ${target}." 1>&2 fi else if test x${host} = x${target} ; then echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 echo " for ${target}." 1>&2 else echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 echo " from ${host} to ${target}." 1>&2 fi fi AC_ARG_VAR(GMPLIBS,[How to link GMP]) AC_ARG_VAR(GMPINC,[How to find GMP include files]) # Configure the subdirectories # AC_CONFIG_SUBDIRS($subdirs) # Create the Makefile # and configure language subdirectories AC_CONFIG_FILES($all_outputs) AC_CONFIG_COMMANDS([default], [ case ${CONFIG_HEADERS} in *auto-host.h:config.in*) echo > cstamp-h ;; esac # Make sure all the subdirs exist. for d in $subdirs doc build do test -d $d || mkdir $d done # If the host supports symlinks, point stage[1234] at ../stage[1234] so # bootstrapping and the installation procedure can still use # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks, # FLAGS_TO_PASS has been modified to solve the problem there. # This is virtually a duplicate of what happens in configure.lang; we do # an extra check to make sure this only happens if ln -s can be used. case "$LN_S" in *-s*) for d in ${subdirs} ; do STARTDIR=`${PWDCMD-pwd}` cd $d for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include do rm -f $t $LN_S ../$t $t 2>/dev/null done cd $STARTDIR done ;; esac ], [subdirs='$subdirs']) AC_OUTPUT