# configure.in for GCC # Process this file with autoconf to generate a configuration script. # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003 # 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 sanity checks # -------------------------------- AC_PREREQ(2.13) AC_INIT(tree.c) AC_CONFIG_HEADER(auto-host.h:config.in) # Determine the host, build, and target systems AC_CANONICAL_SYSTEM # Determine the noncanonical target name, for directory use. _GCC_TOPLEV_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. 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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_ARG_ENABLE(generated-files-in-srcdir, [ --enable-generated-files-in-srcdir Put generated files in source dir], [case ${enableval} in no) parsedir='$(objdir)'; docobjdir='$(objdir)/doc';; *) parsedir='$(srcdir)'; docobjdir='$(srcdir)/doc';; esac], [parsedir='$(objdir)'; docobjdir='$(objdir)/doc';]) # ------------------- # Find default linker # ------------------- # With GNU ld AC_ARG_WITH(gnu-ld, [ --with-gnu-ld arrange to work with GNU ld.], gnu_ld_flag="$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_WARN([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 # ---------------------- # 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_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. 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AC_COMPILE_CHECK_SIZEOF(void *) AC_COMPILE_CHECK_SIZEOF(short) AC_COMPILE_CHECK_SIZEOF(int) AC_COMPILE_CHECK_SIZEOF(long) if test $ac_cv_c_long_long = yes; then AC_COMPILE_CHECK_SIZEOF(long long) fi if test $ac_cv_c___int64 = yes; then AC_COMPILE_CHECK_SIZEOF(__int64) fi # ----------------- # Find Ada compiler # ----------------- # See if GNAT has been installed gcc_AC_PROG_GNAT if test x$have_gnat != xno ; then AC_CACHE_CHECK(whether ${ADAC} accepts -Wno-long-long, ac_cv_prog_adac_no_long_long, [cat >conftest.adb <&5 2>&5 ; then ac_cv_prog_adac_no_long_long=yes else ac_cv_prog_adac_no_long_long=no fi rm -f conftest*]) else ac_cv_prog_adac_no_long_long=yes fi # --------------------- # Warnings and checking # --------------------- strict1_warn= if test $ac_cv_prog_cc_no_long_long = yes && \ test $ac_cv_prog_adac_no_long_long = yes ; then strict1_warn="-pedantic -Wno-long-long" fi AC_SUBST(strict1_warn) # If the native compiler is GCC, we can enable warnings even in stage1. # That's useful for people building cross-compilers, or just running a # quick `make'. warn_cflags= if test "x$GCC" = "xyes"; then warn_cflags='$(GCC_WARN_CFLAGS)' fi AC_SUBST(warn_cflags) # Enable -Werror in bootstrap stage2 and later. # Change the default to "no" on release branches. 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AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_TRY_CPP( [#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif], [gcc_cv_header_valgrind_memcheck_h=yes], [gcc_cv_header_valgrind_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_TRY_CPP( [#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($gcc_cv_header_memcheck_h) AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, [$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). 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AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) # Do we have a single-tree copy of texinfo? if test -f $srcdir/../texinfo/Makefile.in; then MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo' gcc_cv_prog_makeinfo_modern=yes AC_MSG_RESULT([Using makeinfo from the unified source tree.]) else # See if makeinfo has been installed and is modern enough # that we can use it. gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, [GNU texinfo.* \([0-9][0-9.]*\)], [4.[2-9]*]) fi if test $gcc_cv_prog_makeinfo_modern = no; then AC_MSG_WARN([ *** Makeinfo is missing or too old. *** Info documentation will not be built.]) BUILD_INFO= else BUILD_INFO=info AC_SUBST(BUILD_INFO) fi # Is pod2man recent enough to regenerate manpages? 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, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex) 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, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison) fi # -------------------- # Checks for C headers # -------------------- AC_MSG_CHECKING(for GNU C library) AC_CACHE_VAL(gcc_cv_glibc, [AC_TRY_COMPILE( [#include ],[ #if ! 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AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, [save_LIBS="$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="$save_LIBS" AC_SUBST(GNAT_LIBEXC) # Some systems put ldexp and frexp in libm instead of libc; assume # they're both in the same place. jcf-dump needs them. save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(ldexp, m) LDEXP_LIB="$LIBS" LIBS="$save_LIBS" AC_SUBST(LDEXP_LIB) # 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 $gcc_cv_header_inttypes_h = yes; then AC_DEFINE(HAVE_INTTYPES_H, 1, [Define if you have a working header file.]) fi dnl Disabled until we have a complete test for buggy enum bitfields. dnl gcc_AC_C_ENUM_BF_UNSIGNED AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \ sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \ fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \ scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \ setlocale) if test x$ac_cv_func_mbstowcs = xyes; then AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, [ AC_TRY_RUN([#include int main() { mbstowcs(0, "", 0); return 0; }], gcc_cv_func_mbstowcs_works=yes, gcc_cv_func_mbstowcs_works=no, gcc_cv_func_mbstowcs_works=yes)]) if test x$gcc_cv_func_mbstowcs_works = xyes; then AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, [Define this macro if mbstowcs does not crash when its first argument is NULL.]) fi fi gcc_AC_CHECK_TYPE(ssize_t, int) # Try to determine the array type of the second argument of getgroups # for the target system (int or gid_t). AC_TYPE_GETGROUPS if test "${target}" = "${build}"; then TARGET_GETGROUPS_T=$ac_cv_type_getgroups else case "${target}" in # This condition may need some tweaking. It should include all # targets where the array type of the second argument of getgroups # is int and the type of gid_t is not equivalent to int. *-*-sunos* | *-*-ultrix*) TARGET_GETGROUPS_T=int ;; *) TARGET_GETGROUPS_T=gid_t ;; esac fi AC_SUBST(TARGET_GETGROUPS_T) gcc_AC_FUNC_PRINTF_PTR gcc_AC_FUNC_MMAP_BLACKLIST case "${host}" in *-*-*vms*) # Under VMS, vfork works very differently than on Unix. The standard test # won't work, and it isn't easily adaptable. It makes more sense to # just force it. ac_cv_func_vfork_works=yes ;; esac AC_FUNC_VFORK AM_ICONV # Until we have in-tree GNU iconv: LIBICONV_DEP= AC_SUBST(LIBICONV_DEP) AM_LC_MESSAGES # We will need to find libiberty.h and ansidecl.h saved_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include" gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \ strsignal putc_unlocked fputs_unlocked fwrite_unlocked \ fprintf_unlocked strstr errno snprintf vasprintf \ malloc realloc calloc free basename getopt clock, , ,[ #include "ansidecl.h" #include "system.h"]) gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ]) AC_TRY_COMPILE([ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long], [Define to \`long' if doesn't define.])]) gcc_AC_CHECK_DECLS(ldgetname, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_LDFCN_H #include #endif ]) gcc_AC_CHECK_DECLS(times, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_TIMES_H #include #endif ]) # More time-related stuff. AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ AC_TRY_COMPILE([ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_TIMES_H #include #endif ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)]) if test $ac_cv_struct_tms = yes; then AC_DEFINE(HAVE_STRUCT_TMS, 1, [Define if defines struct tms.]) fi # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. # revisit after autoconf 2.50. AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ AC_TRY_COMPILE([ #include "ansidecl.h" #include "system.h" ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)]) if test $gcc_cv_type_clock_t = yes; then AC_DEFINE(HAVE_CLOCK_T, 1, [Define if defines clock_t.]) fi AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar, [AC_TRY_COMPILE([ #include "ansidecl.h" #include "system.h" ], [if ((uchar *)0) return 0; if (sizeof(uchar)) return 0;], ac_cv_type_uchar=yes, ac_cv_type_uchar=no)]) if test $ac_cv_type_uchar = yes; then AC_DEFINE(HAVE_UCHAR, 1, [Define if defines \`uchar'.]) fi # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. CFLAGS="$saved_CFLAGS" gcc_AC_INITFINI_ARRAY # mkdir takes a single argument on some systems. gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG # File extensions manext='.1' objext='.o' AC_SUBST(manext) AC_SUBST(objext) # 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, $sjlj, [Define 0/1 to force the choice for exception handling model.])]) if test x$host = x$target; then AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no) else use_libunwind_default=no fi # Use libunwind based exception handling. AC_ARG_ENABLE(libunwind-exceptions, [ --enable-libunwind-exceptions force use libunwind for exceptions], use_libunwind_exceptions=$enableval, use_libunwind_exceptions=$use_libunwind_default) if test x"$use_libunwind_exceptions" = xyes; then AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1, [Define if gcc should use -lunwind.]) fi # -------------------------------------------------------- # Build, host, and target specific configuration fragments # -------------------------------------------------------- # Collect build-machine-specific information. . ${srcdir}/config.build # Collect host-machine-specific information. . ${srcdir}/config.host target_gtfiles= # Collect target-machine-specific information. . ${srcdir}/config.gcc extra_objs="${host_extra_objs} ${extra_objs}" # Default the target-machine variables that were not explicitly set. if test x"$tm_file" = x then tm_file=$cpu_type/$cpu_type.h; fi if test x"$extra_headers" = x then extra_headers=; fi if test x$md_file = x then md_file=$cpu_type/$cpu_type.md; fi if test x$out_file = x then out_file=$cpu_type/$cpu_type.c; fi if test x"$tmake_file" = x then tmake_file=$cpu_type/t-$cpu_type fi if test x"$dwarf2" = xyes then tm_file="$tm_file tm-dwarf2.h" fi # Say what files are being used for the output code and MD file. echo "Using \`$srcdir/config/$out_file' for machine-specific logic." echo "Using \`$srcdir/config/$md_file' as machine description file." # If any of the xm_file variables contain nonexistent files, warn # about them and drop them. bx= for x in $build_xm_file; do if test -f $srcdir/config/$x then bx="$bx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done build_xm_file="$bx" hx= for x in $host_xm_file; do if test -f $srcdir/config/$x then hx="$hx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done host_xm_file="$hx" tx= for x in $xm_file; do if test -f $srcdir/config/$x then tx="$tx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done xm_file="$tx" count=a for f in $tm_file; do count=${count}x done if test $count = ax; then echo "Using \`$srcdir/config/$tm_file' as target machine macro file." else echo "Using the following target machine macro files:" for f in $tm_file; do echo " $srcdir/config/$f" done fi if test x$need_64bit_hwint = xyes; then AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1, [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).]) fi count=a for f in $host_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." else echo "Using the following host machine macro files:" for f in $host_xm_file; do echo " $srcdir/config/$f" done fi echo "Using ${out_host_hook_obj} for host machine hooks." if test "$host_xm_file" != "$build_xm_file"; then count=a for f in $build_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." else echo "Using the following build machine macro files:" for f in $build_xm_file; do echo " $srcdir/config/$f" done fi fi # Check if a valid thread package case ${enable_threads_flag} in "" | no) # No threads target_thread_file='single' ;; yes) # default target_thread_file='single' ;; aix | dce | gnat | irix | posix | rtems | \ single | solaris | vxworks | win32 ) target_thread_file=${enable_threads_flag} ;; *) echo "${enable_threads_flag} is an unknown thread package" 1>&2 exit 1 ;; esac if test x${thread_file} = x; then # No thread file set by target-specific clauses in config.gcc, # so use file chosen by default logic above thread_file=${target_thread_file} fi if test x$enable___cxa_atexit = xyes || \ test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1, [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 # 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/$extra_modes", [Define to the name of a file containing a list of extra machine modes for this architecture.]) fi # auto-host.h is the file containing items generated by autoconf and is # the first file included by config.h. # If host=build, it is correct to have bconfig include auto-host.h # as well. If host!=build, we are in error and need to do more # work to find out the build config parameters. if test x$host = x$build then build_auto=auto-host.h 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_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 $tempdir build_auto=auto-build.h FORBUILD=../${build_subdir} fi AC_SUBST(FORBUILD) 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="ansidecl.h ${xm_file}" # -------- # UNSORTED # -------- # Get the version trigger filename from the toplevel if test "${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 # 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 </dev/null then cc_set_by_configure="\$(CC)" quoted_cc_set_by_configure="\$(CC)" stage_prefix_set_by_configure="\$(STAGE_PREFIX)" quoted_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\`" quoted_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= tm_include_list= for f in $tm_file; do case $f in defaults.h ) tm_file_list="${tm_file_list} \$(srcdir)/$f" tm_include_list="${tm_include_list} $f" ;; * ) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" tm_include_list="${tm_include_list} config/$f" ;; esac done tm_p_file_list= tm_p_include_list= for f in $tm_p_file; do case $f in tm-preds.h ) tm_p_file_list="${tm_p_file_list} $f" tm_p_include_list="${tm_p_include_list} $f" ;; * ) tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" tm_p_include_list="${tm_p_include_list} config/$f" esac done xm_file_list= xm_include_list= for f in $xm_file; do case $f in ansidecl.h ) xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" xm_include_list="${xm_include_list} $f" ;; auto-host.h ) xm_file_list="${xm_file_list} $f" xm_include_list="${xm_include_list} $f" ;; * ) xm_file_list="${xm_file_list} \$(srcdir)/config/$f" xm_include_list="${xm_include_list} config/$f" ;; esac done host_xm_file_list= host_xm_include_list= for f in $host_xm_file; do case $f in ansidecl.h ) host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" host_xm_include_list="${host_xm_include_list} $f" ;; auto-host.h ) host_xm_file_list="${host_xm_file_list} $f" host_xm_include_list="${host_xm_include_list} $f" ;; * ) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" host_xm_include_list="${host_xm_include_list} 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/$f" build_xm_include_list="${build_xm_include_list} $f" ;; auto-build.h | auto-host.h ) build_xm_file_list="${build_xm_file_list} $f" build_xm_include_list="${build_xm_include_list} $f" ;; * ) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" build_xm_include_list="${build_xm_include_list} config/$f" ;; esac done # Define macro CROSS_COMPILE in compilation if this is a cross-compiler. # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. CROSS= AC_SUBST(CROSS) ALL=all.internal AC_SUBST(ALL) SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) if test x$host != x$target then CROSS="-DCROSS_COMPILE" ALL=all.cross SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' case "$host","$target" in # Darwin crosses can use the host system's libraries and headers, # because of the fat library support. Of course, it must be the # same version of Darwin on both sides. Allow the user to # just say --target=foo-darwin without a version number to mean # "the version on this system". *-*-darwin*,*-*-darwin*) hostos=`echo $host | sed 's/.*-darwin/darwin/'` targetos=`echo $target | sed 's/.*-darwin/darwin/'` if test $hostos = $targetos -o $targetos = darwin ; then CROSS= SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' with_headers=yes fi ;; i?86-*-*,x86_64-*-* \ | powerpc*-*-*,powerpc64*-*-*) CROSS="$CROSS -DNATIVE_CROSS" ;; esac elif test "x$TARGET_SYSTEM_ROOT" != x; then # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR) SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' fi # If this is a cross-compiler that does not # have its own set of headers then define # inhibit_libc # If this is using newlib, without having the headers available now, # then define inhibit_libc in LIBGCC2_CFLAGS. # This prevents libgcc2 from containing any code which requires libc # support. inhibit_libc= if { { test x$host != x$target && test "x$with_sysroot" = x ; } || test x$with_newlib = xyes ; } && { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then inhibit_libc=-Dinhibit_libc fi AC_SUBST(inhibit_libc) # When building gcc with a cross-compiler, we need to adjust things so # that the generator programs are still built with the native compiler. # Also, we cannot run fixincludes or fix-header. # These are the normal (build=host) settings: BUILD_PREFIX= AC_SUBST(BUILD_PREFIX) BUILD_PREFIX_1=ignore- AC_SUBST(BUILD_PREFIX_1) CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) # Possibly disable fixproto, on a per-target basis. case ${use_fixproto} in no) STMP_FIXPROTO= ;; yes) STMP_FIXPROTO=stmp-fixproto ;; esac AC_SUBST(STMP_FIXPROTO) # And these apply if build != host, or we are generating coverage data if test x$build != x$host || test "x$coverage_flags" != x then BUILD_PREFIX=build- BUILD_PREFIX_1=build- BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' if test "x$TARGET_SYSTEM_ROOT" = x; then STMP_FIXINC= STMP_FIXPROTO= fi fi # Expand extra_headers to include complete path. # This substitutes for lots of t-* files. extra_headers_list= # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. for file in ${extra_headers} ; do extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" done # Add a definition of USE_COLLECT2 if system wants one. case $use_collect2 in no) use_collect2= ;; "") ;; *) host_xm_defines="${host_xm_defines} USE_COLLECT2" xm_defines="${xm_defines} USE_COLLECT2" ;; esac # Identify the assembler which will work hand-in-glove with the newly # built GCC, so that we can examine its features. This is the assembler # which will be driven by the driver program. # # If build != host, and we aren't building gas in-tree, we identify a # build->target assembler and hope that it will have the same features # as the host->target assembler we'll be using. AC_MSG_CHECKING(what assembler to use) in_tree_gas=no 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 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 $gcc_cv_as_gas_srcdir/configure.in \ && test -f ../gas/Makefile; then # Single tree build which includes gas. in_tree_gas=yes _gcc_COMPUTE_GAS_VERSION rm -f as$host_exeext $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null in_tree_gas_is_elf=no if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ || (grep 'obj_format = multi' ../gas/Makefile \ && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null then in_tree_gas_is_elf=yes fi fi if test "x$gcc_cv_as" = x; then # 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. if test "x$program_prefix" != xNONE; then gcc_cv_as=${program_prefix}as$host_exeext else gcc_cv_as=`echo as | sed ${program_transform_name}`$host_exeext fi test_dirs="$test_prefix/lib/gcc-lib/$target_noncanonical/$gcc_version \ $test_prefix/lib/gcc-lib/$target_noncanonical \ /usr/lib/gcc/$target_noncanonical/$gcc_version \ /usr/lib/gcc/$target_noncanonical \ $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \ $test_prefix/$target_noncanonical/bin" if test x$host = x$target; then test_dirs="$test_dirs \ /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" fi for dir in $test_dirs; do if test -x $dir/as$host_exeext; then gcc_cv_as=$dir/as$host_exeext break; fi done fi case $in_tree_gas in yes) AC_MSG_RESULT("newly built gas") ;; no) AC_MSG_RESULT($gcc_cv_as) ;; esac # 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. AC_MSG_CHECKING(what linker to use) in_tree_ld=no gcc_cv_ld= 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 if test -x "$DEFAULT_LINKER"; then gcc_cv_ld="$DEFAULT_LINKER" elif test -x "$LD"; then gcc_cv_ld="$LD" elif test -x collect-ld$host_exeext; then # Build using linker in the current directory. gcc_cv_ld=./collect-ld$host_exeext elif test -f $gcc_cv_ld_gld_srcdir/configure.in \ && test -f ../ld/Makefile; then # Single tree build which includes ld. in_tree_ld=yes in_tree_ld_is_elf=no if (grep 'EMUL = .*elf' ../ld/Makefile \ || grep 'EMUL = .*linux' ../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=`grep '^VERSION=[0-9]*\.[0-9]*' $f` changequote([,])dnl if test x$gcc_cv_gld_version != x; then break fi done changequote(,)dnl 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 rm -f collect-ld$host_exeext $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \ 2>/dev/null fi if test "x$gcc_cv_ld" = x; then # Search the same directories that the installed compiler will # search. Else we may find the wrong linker and lose. If we # do not find a suitable linker 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 linker, then use whatever # one we can find in the users's path. # user's path. if test "x$program_prefix" != xNONE; then gcc_cv_ld=${program_prefix}ld$host_exeext else gcc_cv_ld=`echo ld | sed ${program_transform_name}`$host_exeext fi test_dirs="$test_prefix/lib/gcc-lib/$target_noncanonical/$gcc_version \ $test_prefix/lib/gcc-lib/$target_noncanonical \ /usr/lib/gcc/$target_noncanonical/$gcc_version \ /usr/lib/gcc/$target_noncanonical \ $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \ $test_prefix/$target_noncanonical/bin" if test x$host = x$target; then test_dirs="$test_dirs \ /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" fi for dir in $test_dirs; do if test -x $dir/ld$host_exeext; then gcc_cv_ld=$dir/ld$host_exeext break; fi done fi case $in_tree_ld in yes) AC_MSG_RESULT("newly built ld") ;; no) AC_MSG_RESULT($gcc_cv_ld) ;; esac # Figure out what nm we will be using. gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils AC_MSG_CHECKING(what nm to use) in_tree_nm=no if test -x nm$host_exeext; then gcc_cv_nm=./nm$host_exeext elif test -f $gcc_cv_binutils_srcdir/configure.in \ && test -f ../binutils/Makefile; then # Single tree build which includes binutils. in_tree_nm=yes gcc_cv_nm=./nm$host_exeext rm -f nm$host_exeext $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null elif test "x$program_prefix" != xNONE; then gcc_cv_nm=${program_prefix}nm$host_exeext else gcc_cv_nm=`echo nm | sed ${program_transform_name}`$host_exeext fi case $in_tree_nm in yes) AC_MSG_RESULT("newly built nm") ;; no) AC_MSG_RESULT($gcc_cv_nm) ;; esac # Figure out what objdump we will be using. AC_MSG_CHECKING(what objdump to use) in_tree_objdump=no if test -x objdump$host_exeext; then gcc_cv_objdump=./objdump$host_exeext elif test -f $gcc_cv_binutils_srcdir/configure.in \ && test -f ../binutils/Makefile; then # Single tree build which includes binutils. in_tree_objdump=yes gcc_cv_objdump=./objdump$host_exeext rm -f objdump$host_exeext $symbolic_link ../binutils/objdump$host_exeext \ objdump$host_exeext 2>/dev/null elif test "x$program_prefix" != xNONE; then gcc_cv_objdump=${program_prefix}objdump$host_exeext else gcc_cv_objdump=`echo objdump | \ sed ${program_transform_name}`$host_exeext fi case $in_tree_objdump in yes) AC_MSG_RESULT("newly built objdump") ;; no) AC_MSG_RESULT($gcc_cv_objdump) ;; esac # 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.])]) 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.])]) # .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'` ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` if test 0"$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 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]*\.\([0-9]*\)'` 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 # non-GNU linkers don't seem to support .hidden yet gcc_cv_ld_hidden=no fi fi]) libgcc_visibility=no AC_SUBST(libgcc_visibility) 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 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 && test $as_minor -lt 11 then : else gcc_cv_as_leb128=yes fi fi], [AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .sleb128 and .uleb128.])]) # GAS versions up to and including 2.11.0 may mis-optimize # .eh_frame data. gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, [elf,2,12,0],, [ .text .LFB1: .4byte 0 .L1: .4byte 0 .LFE1: .section .eh_frame,"aw",@progbits __FRAME_BEGIN__: .4byte .LECIE1-.LSCIE1 .LSCIE1: .4byte 0x0 .byte 0x1 .ascii "z\0" .byte 0x1 .byte 0x78 .byte 0x1a .byte 0x0 .byte 0x4 .4byte 1 .p2align 1 .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 .LASFDE1: .4byte .LASFDE1-__FRAME_BEGIN__ .4byte .LFB1 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .L1-.LFB1 .LEFDE1:], [ cat > conftest.lit < conftest.big </dev/null \ | tail -3 > conftest.got \ && { cmp conftest.lit conftest.got > /dev/null 2>&1 \ || cmp conftest.big conftest.got > /dev/null 2>&1; } then gcc_cv_as_eh_frame=yes elif AC_TRY_COMMAND($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]) AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) # Thread-local storage - the check is heavily parametrized. conftest_s= tls_first_major= tls_first_minor= tls_as_opt= case "$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 ;; 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 ;; 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 ;; 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 ;; 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 ;; 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 ;; 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 ;; 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" ;; 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 ;; sparc*-*-*) 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 ;; changequote([,])dnl esac if 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], [$tls_as_opt --fatal-warnings], [$conftest_s],, [AC_DEFINE(HAVE_AS_TLS, 1, [Define if your assembler supports thread-local storage.])]) fi # Target-specific assembler checks. 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($29) !gpdisp!3],, [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, [Define if your assembler supports explicit relocations.])]) ;; sparc*-*-*) gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, [.register %g2, #scratch],, [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, [Define if your assembler supports .register.])]) gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, [-relax], [.text],, [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.])]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], gcc_cv_as_sparc_ua_pcrel,, [-K PIC], [.text foo: nop .data .align 4 .byte 0 .uaword %r_disp32(foo)], [if test x$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_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 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.])]) # 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 $target in *-*-aix) conftest_s=' .csect .text[PR]';; *) conftest_s=' .text';; esac conftest_s="$conftest_s mfcr 3,128" 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.])]) ;; 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="($target_cpu_default)|MASK_EXPLICIT_RELOCS" fi]) ;; esac # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any # info to the output file. So, as supported targets are added to gas 2.11, # add some instruction here to (also) show we expect this might work. # ??? Once 2.11 is released, probably need to add first known working # version to the per-target configury. case "$target" in i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \ | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \ | xstormy16*-*-* | cris-*-*) insn="nop" ;; ia64*-*-*) 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], [# ??? This fails with non-gnu grep. Maybe use objdump? if grep debug_line conftest.o > /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 $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then gcc_cv_ld_eh_frame_hdr=yes fi fi if test x"$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($gcc_cv_ld_pie) # Miscellaneous target-specific checks. case "$target" in mips*-*-*) AC_MSG_CHECKING(whether libgloss uses STARTUP directives consistently) gcc_cv_mips_libgloss_startup=no gcc_cv_libgloss_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/libgloss 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 for f in $gcc_cv_libgloss_srcdir/mips/idt.ld $test_prefix/$target_noncanonical/lib/idt.ld do if grep '^STARTUP' $f > /dev/null 2>&1; then gcc_cv_mips_libgloss_startup=yes break fi done if test x"$gcc_cv_mips_libgloss_startup" = xyes; then AC_DEFINE(HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES, 1, [Define if your MIPS libgloss linker scripts consistently include STARTUP directives.]) fi AC_MSG_RESULT($gcc_cv_mips_libgloss_startup) ;; esac if test x$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 # 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 expected_languages=`echo ,${enable_languages}, | sed -e 's:,: :g' -e 's: *: :g' -e 's: *: :g' -e 's:^ ::' -e 's: $::'` found_languages= 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 *,$lang_alias,*) add_this_lang=yes ;; no,*) add_this_lang=no ;; *,all,*) add_this_lang=yes ;; *) add_this_lang=no ;; esac found_languages="${found_languages} ${lang_alias}" if test x"${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 missing_languages= for expected_language in ${expected_languages} .. do if test "${expected_language}" != ..; then missing_language="${expected_language}" if test "${expected_language}" = "c" \ || test "${expected_language}" = "all"; then missing_language= fi for found_language in ${found_languages} .. do if test "${found_language}" != ..; then if test "${expected_language}" = "${found_language}"; then missing_language= fi fi done if test "x${missing_language}" != x; then missing_languages="${missing_languages} ${missing_language}" fi fi done if test "x$missing_languages" != x; then AC_MSG_ERROR([ The following requested languages were not found:${missing_languages} The following languages were available: c${found_languages}]) fi # 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,zone} choose the garbage collection mechanism to use with the compiler], [case "$withval" in simple | page | zone) GGC=ggc-$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 # 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_opt_files= lang_specs_files= lang_tree_files= for subdir in . $subdirs do if test -f $srcdir/$subdir/lang.opt; then lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt" fi if test -f $srcdir/$subdir/lang-specs.h; then lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h" fi if test -f $srcdir/$subdir/$subdir-tree.def; then lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def" fi done # These (without "all_") are set in each config-lang.in. # `language' must be a single word so is spelled singularly. all_languages= all_boot_languages= all_compilers= all_stagestuff= all_outputs='Makefile fixinc/Makefile gccbug mklibgcc mkheaders' # List of language makefile fragments. all_lang_makefrags= # List of language subdirectory makefiles. Deprecated. all_lang_makefiles= # Files for gengtype all_gtfiles="$target_gtfiles" # Files for gengtype with language all_gtfiles_files_langs= all_gtfiles_files_files= # 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 s in $subdirs do language= boot_language= compilers= stagestuff= outputs= gtfiles= . ${srcdir}/$s/config-lang.in if test "x$language" = x then echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2 exit 1 fi all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in" if test -f ${srcdir}/$s/Makefile.in then all_lang_makefiles="$s/Makefile" fi all_languages="$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 ${s} " all_gtfiles_files_files="$all_gtfiles_files_files ${f} " done done # Pick up gtfiles for c gtfiles= s="c" . ${srcdir}/c-config-lang.in all_gtfiles="$all_gtfiles $gtfiles" for f in $gtfiles do all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} " all_gtfiles_files_files="$all_gtfiles_files_files ${f} " done check_languages= for language in $all_languages do check_languages="$check_languages check-$language" done # We link each language in with a set of hooks, reached indirectly via # lang.${target}. rm -f Make-hooks touch Make-hooks target_list="all.build all.cross start.encap rest.encap tags \ install-normal install-common install-man \ uninstall \ mostlyclean clean distclean maintainer-clean \ stage1 stage2 stage3 stage4 stageprofile stagefeedback" for t in $target_list do x= for lang in $all_languages do x="$x $lang.$t" 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 # 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) # Substitute configuration variables AC_SUBST(subdirs) AC_SUBST(srcdir) AC_SUBST(docobjdir) AC_SUBST(parsedir) 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_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_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_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) AC_SUBST(out_object_file) AC_SUBST(stage_prefix_set_by_configure) AC_SUBST(quoted_stage_prefix_set_by_configure) AC_SUBST(symbolic_link) 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(target_noncanonical) 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 ${target}." 1>&2 fi fi # Configure the subdirectories # AC_CONFIG_SUBDIRS($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 # Make sure all the subdirs exist. for d in $subdirs do test -d $d || mkdir $d done # If the host supports symlinks, point stage[1234] at ../stage[1234] so # bootstrapping and the installation procedure can still use # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks, # FLAGS_TO_PASS has been modified to solve the problem there. # This is virtually a duplicate of what happens in configure.lang; we do # an extra check to make sure this only happens if ln -s can be used. if test "$symbolic_link" = "ln -s"; then for d in ${subdirs} fixinc ; do STARTDIR=`${PWDCMD-pwd}` cd $d for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include do rm -f $t $symbolic_link ../$t $t 2>/dev/null done cd $STARTDIR done else true ; fi ], [subdirs='$subdirs' symbolic_link='$symbolic_link' ])