X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fconfigure.ac;h=cd31f4e6db88efed3f34f89c0fa51838fab6adfa;hp=c067770cb5935f6e2eedd9e6217fb0260213516a;hb=3665c1ba3f3c8290fde59822a52ce6e8324d4612;hpb=f9a42338750c992b54ec6fe3a15c5116a58d18bc diff --git a/gcc/configure.ac b/gcc/configure.ac index c067770cb59..cd31f4e6db8 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -2,7 +2,7 @@ # Process this file with autoconf to generate a configuration script. # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, -# 2007, 2008 Free Software Foundation, Inc. +# 2007, 2008, 2009, 2010 Free Software Foundation, Inc. #This file is part of GCC. @@ -24,7 +24,7 @@ # Initialization and sanity checks # -------------------------------- -AC_PREREQ(2.59) +AC_PREREQ(2.64) AC_INIT AC_CONFIG_SRCDIR(tree.c) AC_CONFIG_HEADER(auto-host.h:config.in) @@ -276,6 +276,7 @@ rm -f a.out a.exe b.out # Find the native compiler AC_PROG_CC AM_PROG_CC_C_O +AC_PROG_CXX ACX_PROG_GNAT([-I"$srcdir"/ada]) # autoconf is lame and doesn't give us any substitution variable for this. @@ -310,6 +311,7 @@ AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)]) +GCC_STDINT_TYPES # --------------------- # Warnings and checking @@ -323,24 +325,30 @@ AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)]) # So, we only use -pedantic if we can disable those warnings. ACX_PROG_CC_WARNING_OPTS( - m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ], - [-Wmissing-prototypes -Wcast-qual])), [loose_warn]) + m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn]) ACX_PROG_CC_WARNING_OPTS( - m4_quote(m4_do([-Wold-style-definition -Wc++-compat ], - [-Wmissing-format-attribute])), [strict_warn]) + m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])), + [c_loose_warn]) +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn]) +ACX_PROG_CC_WARNING_OPTS( + m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) ACX_PROG_CC_WARNING_ALMOST_PEDANTIC( m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], [-Wno-overlength-strings])), [strict_warn]) ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn]) # The above macros do nothing if the compiler is not GCC. However, the -# Makefile has more goo to add other flags, so this variabl is used to -# enables warnings only for GCC. +# Makefile has more goo to add other flags, so these variables are used +# to enable warnings only for GCC. warn_cflags= +warn_cxxflags= if test "x$GCC" = "xyes"; then warn_cflags='$(GCC_WARN_CFLAGS)' + warn_cxxflags='$(GCC_WARN_CXXFLAGS)' fi AC_SUBST(warn_cflags) +AC_SUBST(warn_cxxflags) # Enable expensive internal checks is_release= @@ -573,6 +581,13 @@ fi # Miscenalleous configure options # ------------------------------- +# See if we are building gcc with C++. +AC_ARG_ENABLE(build-with-cxx, +[ --enable-build-with-cxx build with C++ compiler instead of C compiler], +ENABLE_BUILD_WITH_CXX=$enableval, +ENABLE_BUILD_WITH_CXX=no) +AC_SUBST(ENABLE_BUILD_WITH_CXX) + # With stabs AC_ARG_WITH(stabs, [ --with-stabs arrange to use stabs instead of host debug format], @@ -770,6 +785,14 @@ AC_SUBST(TARGET_SYSTEM_ROOT) AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) AC_SUBST(CROSS_SYSTEM_HEADER_DIR) +AC_ARG_WITH(specs, + [AS_HELP_STRING([--with-specs=SPECS], + [add SPECS to driver command-line processing])], + [CONFIGURE_SPECS=$withval], + [CONFIGURE_SPECS=] +) +AC_SUBST(CONFIGURE_SPECS) + # Build with intermodule optimisations AC_ARG_ENABLE(intermodule, [ --enable-intermodule build the compiler in one step], @@ -805,10 +828,10 @@ AC_ARG_ENABLE(languages, esac], [enable_languages=c]) -# Used by documentation targets -AC_SUBST(datarootdir) -AC_SUBST(docdir) -AC_SUBST(htmldir) +AC_ARG_WITH(multilib-list, +[ --with-multilib-list Select multilibs (SH only)], +:, +with_multilib_list=default) # ------------------------- # Checks for other programs @@ -1001,6 +1024,22 @@ AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \ gettimeofday mbstowcs wcswidth mmap mincore setlocale \ gcc_UNLOCKED_FUNCS) +save_CPPFLAGS="$CPPFLAGS" +save_LIBS="$LIBS" +LIBS="$LIBS $LIBELFLIBS" +AC_CHECK_FUNCS(elf_getshdrstrndx,, + [AC_CHECK_FUNCS(elf_getshstrndx, + [AC_RUN_IFELSE([AC_LANG_SOURCE([[#include +#include +int main() +{ + return elf_getshstrndx (NULL, 0) == 0; +}]])], AC_DEFINE(HAVE_ELF_GETSHSTRNDX_GABI, 1, + [Define if elf_getshstrndx has gABI conformant return values.]))])] + ) +LIBS="$save_LIBS" +CPPFLAGS="$save_CPPFLAGS" + if test x$ac_cv_func_mbstowcs = xyes; then AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include @@ -1022,26 +1061,6 @@ fi AC_CHECK_TYPE(ssize_t, int) AC_CHECK_TYPE(caddr_t, char *) -# 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_MMAP_BLACKLIST case "${host}" in @@ -1510,6 +1529,32 @@ static const struct { EOF changequote([,])dnl +changequote(,)dnl +gcc_BASEVER=`cat $srcdir/BASE-VER` +gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` +gcc_DATESTAMP=`cat $srcdir/DATESTAMP` +if test -f $srcdir/REVISION ; then + gcc_REVISION=`cat $srcdir/REVISION` +else + gcc_REVISION="" +fi +cat > plugin-version.h </dev/null | sed 1q \ + | grep "GNU gold" > /dev/null; then + ld_is_gold=yes + fi +fi +AC_MSG_RESULT($ld_is_gold) + ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld AC_SUBST(ORIGINAL_LD_FOR_TARGET) case "$ORIGINAL_LD_FOR_TARGET" in @@ -2096,24 +2154,53 @@ gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, [ .hidden foobar foobar:]) +changequote(,)dnl +if test $in_tree_ld != yes ; then + ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` + if test x"$ld_is_gold" = xyes; then + gcc_cv_ld_hidden=yes + elif echo "$ld_ver" | grep GNU > /dev/null; then + ld_vers=`echo $ld_ver | sed -n \ + -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\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]*\.\([0-9]*\)'` + else + case "${target}" in + *-*-solaris2*) + # + # Solaris 2 ld -V output looks like this for a regular version: + # + # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 + # + # but test versions add stuff at the end: + # + # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 + # + ld_ver=`$gcc_cv_ld -V 2>&1` + if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then + ld_vers=`echo $ld_ver | sed -n \ + -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` + ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` + ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` + fi + ;; + esac + fi +fi +changequote([,])dnl + AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, -[if test $in_tree_ld = yes ; then +[[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 $in_tree_ld_is_elf = yes; then gcc_cv_ld_hidden=yes fi else -changequote(,)dnl gcc_cv_ld_hidden=yes - ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then - ld_vers=`echo $ld_ver | sed -n \ - -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\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 @@ -2145,8 +2232,7 @@ changequote(,)dnl ;; esac fi -changequote([,])dnl -fi]) +fi]]) libgcc_visibility=no AC_SUBST(libgcc_visibility) GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) @@ -2204,24 +2290,22 @@ L1: .uleb128 1280 .sleb128 -1010 L2:], - [# GAS versions before 2.11 do not support uleb128, +[[# 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_vers=`echo $as_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` as_major=`expr "$as_vers" : '\([0-9]*\)'` as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` -changequote([,])dnl if test $as_major -eq 2 && test $as_minor -lt 11 then : else gcc_cv_as_leb128=yes fi - fi], + fi]], [AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .sleb128 and .uleb128.])]) @@ -2246,7 +2330,23 @@ gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then gcc_cv_as_cfi_directive=no else - gcc_cv_as_cfi_directive=yes + case "$target" in + i?86-*-solaris2.1[[0-9]]*) + # On Solaris/x86, make sure that GCC and gas agree on using + # read-only .eh_frame sections for 64-bit. + if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \ + $gcc_cv_objdump -h conftest.o 2>/dev/null | \ + sed -e /.eh_frame/!d -e N | \ + grep READONLY > /dev/null; then + gcc_cv_as_cfi_directive=yes + else + gcc_cv_as_cfi_directive=no + fi + ;; + *) + gcc_cv_as_cfi_directive=yes + ;; + esac fi else # no objdump, err on the side of caution @@ -2266,17 +2366,15 @@ gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, [ .text .cfi_startproc .cfi_adjust_cfa_offset 64 - .skip 512, 0 + .skip 75040, 0 .cfi_adjust_cfa_offset 128 .cfi_endproc], -[ -changequote(,)dnl +[[ if $gcc_cv_readelf -wf conftest.o 2>/dev/null \ - | grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then + | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then gcc_cv_as_cfi_advance_working=yes fi -changequote([,])dnl -]) +]]) else # no readelf, err on the side of caution gcc_cv_as_cfi_advance_working=no @@ -2297,6 +2395,17 @@ AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports .cfi_personality.]) +gcc_GAS_CHECK_FEATURE([cfi sections directive], + gcc_cv_as_cfi_sections_directive, ,, +[ .text + .cfi_sections .debug_frame, .eh_frame + .cfi_startproc + .cfi_endproc]) +AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, + [`if test $gcc_cv_as_cfi_sections_directive = yes; + then echo 1; else echo 0; fi`], + [Define 0/1 if your assembler supports .cfi_sections.]) + # 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, @@ -2390,7 +2499,15 @@ else [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 +if test x"$ld_is_gold" = xyes; then + comdat_group=yes +elif test $in_tree_ld = yes ; then + comdat_group=no + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + comdat_group=yes + fi +elif echo "$ld_ver" | grep GNU > /dev/null; then comdat_group=yes if test 0"$ld_date" -lt 20050308; then if test -n "$ld_date"; then @@ -2403,9 +2520,32 @@ if test $in_tree_ld != yes && test x"$ld_vers" != x; then fi fi else - # assume linkers other than GNU ld don't support COMDAT group - comdat_group=no +changequote(,)dnl + case "${target}" in + *-*-solaris2.1[1-9]*) + # Sun ld has COMDAT group support since Solaris 9, but it doesn't + # interoperate with GNU as until Solaris 11 build 130, i.e. ld + # version 1.688. + # + # FIXME: Maybe need to refine later when COMDAT group support with + # Sun as is implemented. + if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then + comdat_group=yes + else + comdat_group=no + fi + ;; + *) + # Assume linkers other than GNU ld don't support COMDAT group. + comdat_group=no + ;; + esac +changequote([,])dnl fi +# Allow overriding the automatic COMDAT group tests above. +AC_ARG_ENABLE(comdat, + [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], + [comdat_group="$enable_comdat"]) if test $comdat_group = no; then gcc_cv_as_comdat_group=no gcc_cv_as_comdat_group_percent=no @@ -2414,6 +2554,15 @@ AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support COMDAT groups.]) +gcc_GAS_CHECK_FEATURE([line table discriminator support], + gcc_cv_as_discriminator, + [2,19,51],, +[ .text + .file 1 "conf.c" + .loc 1 1 0 discriminator 1],, +[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, + [Define if your assembler supports the .loc discriminator sub-directive.])]) + # Thread-local storage - the check is heavily parameterized. conftest_s= tls_first_major= @@ -2444,6 +2593,17 @@ foo: .long 25 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; + cris-*-*|crisv32-*-*) + conftest_s=' + .section ".tdata","awT",@progbits +x: .long 25 + .text + move.d x:IE,$r10 + nop' + tls_first_major=2 + tls_first_minor=20 + tls_as_opt=--fatal-warnings + ;; frv*-*-*) conftest_s=' .section ".tdata","awT",@progbits @@ -2496,25 +2656,54 @@ foo: .long 25 tls_first_minor=17 ;; i[34567]86-*-*) - conftest_s=' - .section ".tdata","awT",@progbits + case "$target" in + i[34567]86-*-solaris2.[89]*) + # TLS was introduced in the Solaris 9 4/04 release but + # we do not enable it by default on Solaris 9 either. + if test "x$enable_tls" = xyes ; then + on_solaris=yes + else + enable_tls=no; + fi + ;; + i[34567]86-*-solaris2.*) + on_solaris=yes + ;; + *) + on_solaris=no + ;; + esac + if test x$on_solaris = xyes && test x$gas_flag = xno; then + conftest_s=' + .section .tdata,"awt",@progbits' + tls_first_major=0 + tls_first_minor=0 +changequote([,])dnl + AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', +[Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) +changequote(,)dnl + else + conftest_s=' + .section ".tdata","awT",@progbits' + tls_first_major=2 + tls_first_minor=14 + tls_as_opt="--fatal-warnings" + fi + conftest_s="$conftest_s 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 $foo@TPOFF, %eax - leal foo@NTPOFF(%ecx), %eax' - tls_first_major=2 - tls_first_minor=14 - tls_as_opt=--fatal-warnings - ;; + leal foo@tlsgd(,%ebx,1), %eax + leal foo@tlsldm(%ebx), %eax + leal foo@dtpoff(%eax), %edx + movl foo@gottpoff(%ebx), %eax + subl foo@gottpoff(%ebx), %eax + addl foo@gotntpoff(%ebx), %eax + movl foo@indntpoff, %eax + movl \$foo@tpoff, %eax + subl \$foo@tpoff, %eax + leal foo@ntpoff(%ecx), %eax" + ;; x86_64-*-*) conftest_s=' .section ".tdata","awT",@progbits @@ -2565,6 +2754,22 @@ x: tls_first_minor=16 tls_as_opt='-32 --fatal-warnings' ;; + m68k-*-*) + conftest_s=' + .section .tdata,"awT",@progbits +x: + .word 2 + .text +foo: + move.l x@TLSGD(%a5),%a0 + move.l x@TLSLDM(%a5),%a0 + move.l x@TLSLDO(%a5),%a0 + move.l x@TLSIE(%a5),%a0 + move.l x@TLSLE(%a5),%a0' + tls_first_major=2 + tls_first_minor=19 + tls_as_opt='--fatal-warnings' + ;; powerpc-*-*) conftest_s=' .section ".tdata","awT",@progbits @@ -2678,7 +2883,7 @@ foo: .long 25 ;; sparc*-*-*) case "$target" in - sparc*-sun-solaris2.[56789]*) + sparc*-sun-solaris2.[89]*) # 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 @@ -2782,7 +2987,7 @@ fi 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 "$gcc_cv_gld_minor_version" -ge 10; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_static_dynamic=yes fi elif test x$gcc_cv_ld != x; then @@ -2867,6 +3072,35 @@ case "$target" in [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.])]) + gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], + gcc_cv_as_sparc_gotdata_op,, + [-K PIC], +[.text +foo: + nop +bar: + sethi %gdop_hix22(foo), %g1 + xor %g1, %gdop_lox10(foo), %g1 + ld [[%l7 + %g1]], %g2, %gdop(foo)], + [if test x$gcc_cv_ld != x \ + && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then + if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then + if test x$gcc_cv_objdump != x; then + if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ + | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then + gcc_cv_as_sparc_gotdata_op=no + else + gcc_cv_as_sparc_gotdata_op=yes + fi + fi + else + gcc_cv_as_sparc_gotdata_op=yes + fi + fi + rm -f conftest], + [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, + [Define if your assembler and linker support GOTDATA_OP relocs.])]) + gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], gcc_cv_as_sparc_ua_pcrel,, [-K PIC], @@ -2932,7 +3166,35 @@ changequote(,)dnl i[34567]86-*-* | x86_64-*-*) changequote([,])dnl case $target_os in + cygwin*) + # Full C++ conformance when using a shared libstdc++-v3 requires some + # support from the Cygwin DLL, which in more recent versions exports + # wrappers to aid in interposing and redirecting operators new, delete, + # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we + # are configuring for a version of Cygwin that exports the wrappers. + if test x$host = x$target; then + AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) + else + # Can't check presence of libc functions during cross-compile, so + # we just have to assume we're building for an up-to-date target. + gcc_ac_cygwin_dll_wrappers=yes + fi + AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, + [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], + [Define if you want to generate code by default that assumes that the + Cygwin DLL exports wrappers to support libstdc++ function replacement.]) + esac + case $target_os in cygwin* | pe | mingw32*) + # Recent binutils allows the three-operand form of ".comm" on PE. This + # definition is used unconditionally to initialise the default state of + # the target option variable that governs usage of the feature. + gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, + [2,19,52],,[.comm foo,1,32]) + AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, + [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], + [Define if your assembler supports specifying the alignment + of objects allocated using the GAS .comm command.]) # Used for DWARF 2 in PE gcc_GAS_CHECK_FEATURE([.secrel32 relocs], gcc_cv_as_ix86_pe_secrel32, @@ -2948,14 +3210,33 @@ foo: nop rm -f conftest], [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) + # Test if the assembler supports the extended form of the .section + # directive that specifies section alignment. LTO support uses this, + # but normally only after installation, so we warn but don't fail the + # configure if LTO is enabled but the assembler does not support it. + gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, + [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) + if test x$gcc_cv_as_section_has_align != xyes; then + case ",$enable_languages," in + *,lto,*) + AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) + ;; + esac + fi ;; esac gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], - gcc_cv_as_ix86_filds_fists, - [2,9,0],, [filds mem; fists mem],, - [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1, - [Define if your assembler uses the new HImode fild and fist notation.])]) + gcc_cv_as_ix86_filds,,, + [filds mem; fists mem],, + [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, + [Define if your assembler uses filds and fists mnemonics.])]) + + gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], + gcc_cv_as_ix86_fildq,,, + [fildq mem; fistpq mem],, + [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, + [Define if your assembler uses fildq and fistq mnemonics.])]) gcc_GAS_CHECK_FEATURE([cmov syntax], gcc_cv_as_ix86_cmov_sun_syntax,,, @@ -2975,6 +3256,12 @@ foo: nop [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, [Define if your assembler supports the sahf mnemonic.])]) + gcc_GAS_CHECK_FEATURE([swap suffix], + gcc_cv_as_ix86_swap,,, + [movl.s %esp, %ebp],, + [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, + [Define if your assembler supports the swap suffix.])]) + gcc_GAS_CHECK_FEATURE([different section symbol subtraction], gcc_cv_as_ix86_diff_sect_delta,,, [.section .rodata @@ -3080,7 +3367,7 @@ foo: nop esac gcc_GAS_CHECK_FEATURE([move fp gpr support], - gcc_cv_as_powerpc_mfpgpr, [9,99,0],, + gcc_cv_as_powerpc_mfpgpr, [2,19,2],, [$conftest_s],, [AC_DEFINE(HAVE_AS_MFPGPR, 1, [Define if your assembler supports mffgpr and mftgpr.])]) @@ -3114,7 +3401,7 @@ LCF0: esac gcc_GAS_CHECK_FEATURE([compare bytes support], - gcc_cv_as_powerpc_cmpb, [9,99,0], -a32, + gcc_cv_as_powerpc_cmpb, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_CMPB, 1, [Define if your assembler supports cmpb.])]) @@ -3129,7 +3416,7 @@ LCF0: esac gcc_GAS_CHECK_FEATURE([decimal float support], - gcc_cv_as_powerpc_dfp, [9,99,0], -a32, + gcc_cv_as_powerpc_dfp, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_DFP, 1, [Define if your assembler supports DFP instructions.])]) @@ -3144,16 +3431,80 @@ LCF0: esac gcc_GAS_CHECK_FEATURE([vector-scalar support], - gcc_cv_as_powerpc_vsx, [9,99,0], -a32, + gcc_cv_as_powerpc_vsx, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_VSX, 1, [Define if your assembler supports VSX instructions.])]) + case $target in + *-*-aix*) conftest_s=' .machine "pwr7" + .csect .text[[PR]] + popcntd 3,3';; + *) conftest_s=' .machine power7 + .text + popcntd 3,3';; + esac + + gcc_GAS_CHECK_FEATURE([popcntd support], + gcc_cv_as_powerpc_popcntd, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_POPCNTD, 1, + [Define if your assembler supports POPCNTD instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .csect .text[[PR]] + lwsync';; + *) conftest_s=' .text + lwsync';; + esac + + gcc_GAS_CHECK_FEATURE([lwsync support], + gcc_cv_as_powerpc_lwsync, [2,19,2], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_LWSYNC, 1, + [Define if your assembler supports LWSYNC instructions.])]) + + case $target in + *-*-aix*) conftest_s=' .machine "476" + .csect .text[[PR]] + dci 0';; + *) conftest_s=' .machine "476" + .text + dci 0';; + esac + + gcc_GAS_CHECK_FEATURE([data cache invalidate support], + gcc_cv_as_powerpc_dci, [9,99,0], -a32, + [$conftest_s],, + [AC_DEFINE(HAVE_AS_DCI, 1, + [Define if your assembler supports the DCI/ICI instructions.])]) + gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) + + gcc_GAS_CHECK_FEATURE([tls marker support], + gcc_cv_as_powerpc_tls_markers, [2,20,0],, + [ bl __tls_get_addr(x@tlsgd)],, + [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, + [Define if your assembler supports arg info for __tls_get_addr.])]) + + case $target in + *-*-aix*) + gcc_GAS_CHECK_FEATURE([.ref support], + gcc_cv_as_aix_ref, [2.21.0],, + [ .csect stuff[[rw]] + stuff: + .long 1 + .extern sym + .ref sym + ],, + [AC_DEFINE(HAVE_AS_REF, 1, + [Define if your assembler supports .ref])]) + ;; + esac ;; mips*-*-*) @@ -3184,6 +3535,87 @@ x: .dtprelword x+0x8000],, [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, [Define if your assembler supports .dtprelword.])]) + + AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) + gcc_cv_as_ld_jalr_reloc=no + if test $gcc_cv_as_mips_explicit_relocs = yes; then + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_as_ld_jalr_reloc=yes + fi + elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then + echo ' .ent x' > conftest.s + echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s + echo ' ld $25,%call16(y)($28)' >> conftest.s + echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s + echo '1: jalr $25' >> conftest.s + echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s + echo '1: jalr $25' >> conftest.s + echo ' .end x' >> conftest.s + if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ + && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then + if $gcc_cv_objdump -d conftest.so | grep -q jalr \ + && $gcc_cv_objdump -d conftest.so | grep -q "bal.*"; then + gcc_cv_as_ld_jalr_reloc=yes + fi + fi + rm -f conftest.* + fi + fi + if test $gcc_cv_as_ld_jalr_reloc = yes; then + if test x$target_cpu_default = x; then + target_cpu_default=MASK_RELAX_PIC_CALLS + else + target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" + fi + fi + AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) + + AC_CACHE_CHECK([linker for .eh_frame personality relaxation], + [gcc_cv_ld_mips_personality_relaxation], + [gcc_cv_ld_mips_personality_relaxation=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 \ + -a "$gcc_cv_gld_minor_version" -ge 21 \ + -o "$gcc_cv_gld_major_version" -gt 2; then + gcc_cv_ld_mips_personality_relaxation=yes + fi + elif test x$gcc_cv_as != x \ + -a x$gcc_cv_ld != x \ + -a x$gcc_cv_readelf != x ; then + cat > conftest.s < /dev/null 2>&1 \ + && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then + if $gcc_cv_readelf -d conftest 2>&1 \ + | grep TEXTREL > /dev/null 2>&1; then + : + elif $gcc_cv_readelf --relocs conftest 2>&1 \ + | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then + : + else + gcc_cv_ld_mips_personality_relaxation=yes + fi + fi + fi + rm -f conftest.s conftest.o conftest]) + if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then + AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, + [Define if your linker can relax absolute .eh_frame personality +pointers into PC-relative form.]) + fi ;; esac @@ -3213,7 +3645,7 @@ esac case "$target" in i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \ | x86_64*-*-* | hppa*-*-* | arm*-*-* \ - | xstormy16*-*-* | cris-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \ + | xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \ | spu-*-* | fido*-*-* | m32c-*-*) insn="nop" ;; @@ -3286,6 +3718,32 @@ gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, [Define if your assembler supports .lcomm with an alignment field.])]) +AC_ARG_ENABLE(gnu-unique-object, + [ --enable-gnu-unique-object enable the use of the @gnu_unique_object ELF extension on + glibc systems], + [case $enable_gnu_unique_object in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. +Valid choices are 'yes' and 'no'.]) ;; + esac], + [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, + [elf,2,19,52],, + [.type foo, @gnu_unique_object],, +# Also check for ld.so support, i.e. glibc 2.11 or higher. + [[if test x$host = x$build -a x$host = x$target && + glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then + glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` + glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` + glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` + if test "$glibcnum" -ge 2011 ; then + enable_gnu_unique_object=yes + fi + fi]])]) +if test x$enable_gnu_unique_object = xyes; then + AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, + [Define if your assembler supports @gnu_unique_object.]) +fi + AC_CACHE_CHECK([assembler for tolerance to line number 0], [gcc_cv_as_line_zero], [gcc_cv_as_line_zero=no @@ -3493,6 +3951,41 @@ EOF ;; esac +AC_CACHE_CHECK(linker --build-id support, + gcc_cv_ld_buildid, + [gcc_cv_ld_buildid=no + if test $in_tree_ld = yes ; then + if test "$gcc_cv_gld_major_version" -eq 2 -a \ + "$gcc_cv_gld_minor_version" -ge 18 -o \ + "$gcc_cv_gld_major_version" -gt 2 \ + && test $in_tree_ld_is_elf = yes; then + gcc_cv_ld_buildid=yes + fi + elif test x$gcc_cv_ld != x; then + if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then + gcc_cv_ld_buildid=yes + fi + fi]) +if test x"$gcc_cv_ld_buildid" = xyes; then + AC_DEFINE(HAVE_LD_BUILDID, 1, + [Define if your linker supports --build-id.]) +fi + +AC_ARG_ENABLE(linker-build-id, +[ --enable-linker-build-id + compiler will always pass --build-id to linker], +[], +enable_linker_build_id=no) + +if test x"$enable_linker_build_id" = xyes; then + if test x"$gcc_cv_ld_buildid" = xyes; then + AC_DEFINE(ENABLE_LD_BUILDID, 1, + [Define if gcc should always pass --build-id to linker.]) + else + AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) + fi +fi + AC_CACHE_CHECK(linker --sysroot support, gcc_cv_ld_sysroot, [gcc_cv_ld_sysroot=no @@ -3524,7 +4017,9 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library, case "$target" in *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu) if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then - if test "x$with_sysroot" = x; then + if test "x$with_headers" != x; then + glibc_header_dir=$with_headers + elif test "x$with_sysroot" = x; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" elif test "x$with_build_sysroot" != "x"; then glibc_header_dir="${with_build_sysroot}/usr/include" @@ -3536,27 +4031,27 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library, else glibc_header_dir=/usr/include fi - # glibc 2.4 and later provides __stack_chk_fail and + [# 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])' \ + && $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])' \ + 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' \ + elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \ $glibc_header_dir/features.h > /dev/null \ - && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ + && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ $glibc_header_dir/features.h > /dev/null; then gcc_cv_libc_provides_ssp=yes - elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ + elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ $glibc_header_dir/features.h > /dev/null && \ test -f $glibc_header_dir/bits/uClibc_config.h && \ - $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ + $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ $glibc_header_dir/bits/uClibc_config.h > /dev/null; then gcc_cv_libc_provides_ssp=yes fi - fi + fi] ;; *-*-gnu*) # Avoid complicated tests (see @@ -3564,7 +4059,7 @@ AC_CACHE_CHECK(__stack_chk_fail in target C library, # simply assert that glibc does provide this, which is true for all # realistically usable GNU/Hurd configurations. gcc_cv_libc_provides_ssp=yes;; - *-*-darwin*) + *-*-darwin* | *-*-freebsd*) AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], [echo "no __stack_chk_fail on this target"]) ;; @@ -3588,7 +4083,7 @@ case "$target" in AC_ARG_WITH(long-double-128, [ --with-long-double-128 Use 128-bit long double by default.], gcc_cv_target_ldbl128="$with_long_double_128", - [gcc_cv_target_ldbl128=no + [[gcc_cv_target_ldbl128=no if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then if test "x$with_sysroot" = x; then glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" @@ -3602,12 +4097,10 @@ case "$target" in 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 @@ -3635,6 +4128,13 @@ esac], AC_SUBST(GGC) echo "Using $GGC for garbage collection." +# Libraries to use on the host. This will normally be set by the top +# level Makefile. Here we simply capture the value for our Makefile. +if test -z "${HOST_LIBS+set}"; then + HOST_LIBS= +fi +AC_SUBST(HOST_LIBS) + # Use the system's zlib library. zlibdir=-L../zlib zlibinc="-I\$(srcdir)/../zlib" @@ -3786,6 +4286,25 @@ changequote([,])dnl all_compilers="$all_compilers $compilers" all_outputs="$all_outputs $outputs" all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" + case ",$enable_languages," in + *,lto,*) + AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) + enable_lto=yes + AC_SUBST(enable_lto) + # LTO needs to speak the platform's object file format, and has a + # number of implementations of the required binary file access APIs. + # ELF is the most common, and default. We only link libelf if ELF + # is indeed the selected format. + LTO_BINARY_READER=${lto_binary_reader} + LTO_USE_LIBELF=-lelf + if test "x$lto_binary_reader" != "xlto-elf" ; then + LTO_USE_LIBELF= + fi + AC_SUBST(LTO_BINARY_READER) + AC_SUBST(LTO_USE_LIBELF) + ;; + *) ;; + esac done # Pick up gtfiles for c @@ -3805,9 +4324,9 @@ done rm -f Make-hooks touch Make-hooks target_list="all.cross start.encap rest.encap tags \ - install-common install-man install-info install-pdf dvi pdf \ - html uninstall info man srcextra srcman srcinfo \ - mostlyclean clean distclean maintainer-clean" + install-common install-man install-info install-pdf install-html dvi \ + pdf html uninstall info man srcextra srcman srcinfo \ + mostlyclean clean distclean maintainer-clean install-plugin" for t in $target_list do @@ -3862,24 +4381,6 @@ else fi) AC_SUBST(slibdir) -AC_ARG_WITH(datarootdir, -[ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]], -datarootdir="\${prefix}/$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='$(docdir)') -AC_SUBST(htmldir) - # Substitute configuration variables AC_SUBST(subdirs) AC_SUBST(srcdir) @@ -3899,6 +4400,9 @@ AC_SUBST(check_languages) AC_SUBST(cpp_install_dir) AC_SUBST(xmake_file) AC_SUBST(tmake_file) +AC_SUBST(TM_ENDIAN_CONFIG) +AC_SUBST(TM_MULTILIB_CONFIG) +AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) AC_SUBST(extra_gcc_objs) AC_SUBST(extra_headers_list) AC_SUBST(extra_objs) @@ -3931,6 +4435,7 @@ AC_SUBST(tm_p_include_list) AC_SUBST(xm_file_list) AC_SUBST(xm_include_list) AC_SUBST(xm_defines) +AC_SUBST(use_gcc_stdint) AC_SUBST(c_target_objs) AC_SUBST(cxx_target_objs) AC_SUBST(fortran_target_objs) @@ -3968,6 +4473,92 @@ if test "x${CLOOGLIBS}" != "x" ; then AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.]) fi +AC_ARG_VAR(LIBELFLIBS,[How to link libelf]) +AC_ARG_VAR(LIBELFINC,[How to find libelf include files]) +if test "x${LIBELFLIBS}" != "x" ; then + AC_DEFINE(HAVE_libelf, 1, [Define if libelf is in use.]) +fi + +# Check for plugin support +AC_ARG_ENABLE(plugin, +[ --enable-plugin enable plugin support], +enable_plugin=$enableval, +enable_plugin=yes; default_plugin=yes) + +pluginlibs= +if test x"$enable_plugin" = x"yes"; then + + case "${host}" in + *-*-darwin*) + export_sym_check="$gcc_cv_nm -g" + ;; + *) + export_sym_check="$gcc_cv_objdump -T" + ;; + esac + AC_MSG_CHECKING([for exported symbols]) + echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c + ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1 + if $export_sym_check conftest | grep foobar > /dev/null; then + : # No need to use a flag + else + AC_MSG_CHECKING([for -rdynamic]) + ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1 + if $export_sym_check conftest | grep foobar > /dev/null; then + plugin_rdynamic=yes + pluginlibs="-rdynamic" + else + plugin_rdynamic=no + enable_plugin=no + fi + AC_MSG_RESULT([$plugin_rdynamic]) + fi + + # Check -ldl + saved_LIBS="$LIBS" + AC_SEARCH_LIBS([dlopen], [dl]) + if test x"$ac_cv_search_dlopen" = x"-ldl"; then + pluginlibs="$pluginlibs -ldl" + fi + LIBS="$saved_LIBS" + + # Check that we can build shared objects with -fPIC -shared + saved_LDFLAGS="$LDFLAGS" + case "${host}" in + *-*-darwin*) + LDFLAGS="$LDFLAGS -fPIC -shared -undefined dynamic_lookup" + ;; + *) + LDFLAGS="$LDFLAGS -fPIC -shared" + ;; + esac + AC_MSG_CHECKING([for -fPIC -shared]) + AC_TRY_LINK( + [extern int X;],[return X == 0;], + [AC_MSG_RESULT([yes]); have_pic_shared=yes], + [AC_MSG_RESULT([no]); have_pic_shared=no]) + if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then + pluginlibs= + enable_plugin=no + fi + LDFLAGS="$saved_LDFLAGS" + + # If plugin support had been requested but not available, fail. + if test x"$enable_plugin" = x"no" ; then + if test x"$default_plugin" != x"yes"; then + AC_MSG_ERROR([ +Building GCC with plugin support requires a host that supports +-fPIC, -shared, -ldl and -rdynamic.]) + fi + fi +fi + +AC_SUBST(pluginlibs) +AC_SUBST(enable_plugin) +if test x"$enable_plugin" = x"yes"; then + AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) +fi + # Configure the subdirectories # AC_CONFIG_SUBDIRS($subdirs)