[Build,Quad,Fortran] PR 46520: Build only with languages=fortran; fix build with cross compiler

Message ID	4CE44C58.9070608@net-b.de
State	New
Headers	show Return-Path: <gcc-patches-return-278774-incoming=patchwork.ozlabs.org@gcc.gnu.org> Message-ID: <4CE44C58.9070608@net-b.de> Date: Wed, 17 Nov 2010 22:42:48 +0100 From: Tobias Burnus <burnus@net-b.de> User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.12) Gecko/20101026 SUSE/3.1.6 Thunderbird/3.1.6 MIME-Version: 1.0 To: gcc patches <gcc-patches@gcc.gnu.org>, gfortran <fortran@gcc.gnu.org> Subject: [Patch,Build,Quad,Fortran] PR 46520: Build only with languages=fortran; fix build with cross compiler Content-Type: multipart/mixed; boundary="------------050400090503030208060604" Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk Sender: gcc-patches-owner@gcc.gnu.org

gcc/fortran/ 2010-11-17 Tobias Burnus <burnus@net-b.de> PR fortran/46520 * config-lang.in (target_libs): Add target-libquadmath. libquad/ 2010-11-17 Tobias Burnus <burnus@net-b.de> Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> PR fortran/46520 * acinclude.m4 (LIBGOMP_CHECK_SYNC_BUILTINS, LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY, LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT): Remove. (LIBQUAD_ENABLE, LIBQUAD_CHECK_LINKER_FEATURES, LIBQUAD_ENABLE_SYMVERS): Add. * configure.ac: Use GCC_NO_EXECUTABLES, change symver handling. * Makefile.am: Change symver handling. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * config.h.in: Regenerate. * configure: Regenerate. Index: gcc/fortran/config-lang.in =================================================================== --- gcc/fortran/config-lang.in (Revision 166875) +++ gcc/fortran/config-lang.in (Arbeitskopie) @@ -27,7 +27,7 @@ language="fortran" compilers="f951\$(exeext)" -target_libs=target-libgfortran +target_libs="target-libquadmath target-libgfortran" gtfiles="\$(srcdir)/fortran/f95-lang.c \$(srcdir)/fortran/trans-decl.c \$(srcdir)/fortran/trans-intrinsic.c \$(srcdir)/fortran/trans-io.c \$(srcdir)/fortran/trans-stmt.c \$(srcdir)/fortran/trans-types.c \$(srcdir)/fortran/trans-types.h \$(srcdir)/fortran/trans.h \$(srcdir)/fortran/trans-const.h" Index: libquadmath/Makefile.am =================================================================== --- libquadmath/Makefile.am (Revision 166875) +++ libquadmath/Makefile.am (Arbeitskopie) @@ -10,39 +10,45 @@ ACLOCAL_AMFLAGS = -I .. -I ../config ## May be used by toolexeclibdir. gcc_version := $(shell cat $(top_srcdir)/../gcc/BASE-VER) -## Symbol versioning (copied from libssp). -if LIBQUAD_USE_SYMVER -if LIBQUAD_USE_SYMVER_GNU -version_arg = -Wl,--version-script=$(srcdir)/quadmath.map -version_dep = $(srcdir)/quadmath.map +## Symbol versioning (copied from libgomp). +if LIBQUAD_BUILD_VERSIONED_SHLIB +if LIBQUAD_BUILD_VERSIONED_SHLIB_GNU +if LIBQUAD_BUILD_VERSIONED_SHLIB_SOL2 +libquadmath_version_script = -Wl,--version-script,quadmath.map-sol2 +libquadmath_version_dep = quadmath.map-sol2 +quadmath.map-sol2 : $(top_srcdir)/quadmath.map + sed -e '/^#ifdef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT/,/^#endif/d' $< \ + > $@ || (rm -f $@ ; exit 1) +else +libquadmath_version_script = -Wl,--version-script,$(top_srcdir)/quadmath.map +libquadmath_version_dep = $(top_srcdir)/quadmath.map +endif endif -if LIBQUAD_USE_SYMVER_SUN -version_arg = -Wl,-M,quadmath.map-sun -version_dep = quadmath.map-sun -quadmath.map-sun : $(srcdir)/quadmath.map \ - $(top_srcdir)/../contrib/make_sunver.pl \ - $(libquadmath_la_OBJECTS) $(libquadmath_la_LIBADD) - perl $(top_srcdir)/../contrib/make_sunver.pl \ - $(srcdir)/quadmath.map \ - $(libquadmath_la_OBJECTS:%.lo=.libs/%.o) \ - `echo $(libquadmath_la_LIBADD) | \ - sed 's,/$[^/.]*$\.la,/.libs/\1.a,g'` \ - > $@ || (rm -f $@ ; exit 1) +if LIBQUAD_BUILD_VERSIONED_SHLIB_SUN +libquadmath_version_script = -Wl,-M,quadmath.map-sun +libquadmath_version_dep = quadmath.map-sun +quadmath.map-sun : $(top_srcdir)/quadmath.map \ + $(top_srcdir)/../contrib/make_sunver.pl \ + $(libquadmath_la_OBJECTS) $(libquadmath_la_LIBADD) + perl $(top_srcdir)/../contrib/make_sunver.pl \ + $(top_srcdir)/quadmath.map \ + $(libquadmath_la_OBJECTS:%.lo=.libs/%.o) \ + `echo $(libquadmath_la_LIBADD) | \ + sed 's,/$[^/.]*$\.la,/.libs/\1.a,g'` \ + > $@ || (rm -f $@ ; exit 1) endif else -version_arg = -version_dep = +libquadmath_version_script = +libquadmath_version_dep = endif -LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS)) \ - -no-undefined - - toolexeclib_LTLIBRARIES = libquadmath.la -libquadmath_la_LIBADD = -lm -libquadmath_la_LDFLAGS = $(LTLDFLAGS) -version-info `grep -v '^\#' $(srcdir)/libtool-version` $(version_arg) -libquadmath_la_LINK = $(LINK) $(libgfortran_la_LDFLAGS) -libquadmath_la_DEPENDENCIES = $(version_dep) + +libquadmath_version_info = -version-info `grep -v '^\#' $(srcdir)/libtool-version` +libquadmath_la_LDFLAGS = $(libquadmath_version_info) $(libquadmath_version_script) \ + -no-undefined -bindir "$(bindir)" -lm +libquadmath_la_LINK = $(LINK) $(libquadmath_la_LDFLAGS) +libquadmath_la_DEPENDENCIES = $(libquadmath_version_dep) include_HEADERS = quadmath.h quadmath_weak.h Index: libquadmath/acinclude.m4 =================================================================== --- libquadmath/acinclude.m4 (Revision 166875) +++ libquadmath/acinclude.m4 (Arbeitskopie) @@ -1,46 +1,302 @@ -dnl ---------------------------------------------------------------------- -dnl This whole bit snagged from libgfortran. +dnl The following has been taken from gomp, which has +dnl the whole bit snagged from libstdc++-v3. -dnl Check whether the target supports __sync_*_compare_and_swap. -AC_DEFUN([LIBGOMP_CHECK_SYNC_BUILTINS], [ - AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap], - libgomp_cv_have_sync_builtins, [ - AC_TRY_LINK([], [int foo; __sync_val_compare_and_swap(&foo, 0, 1);], - libgomp_cv_have_sync_builtins=yes, libgomp_cv_have_sync_builtins=no)]) - if test $libgomp_cv_have_sync_builtins = yes; then - AC_DEFINE(HAVE_SYNC_BUILTINS, 1, - [Define to 1 if the target supports __sync_*_compare_and_swap]) - fi]) - -dnl Check whether the target supports hidden visibility. -AC_DEFUN([LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY], [ - AC_CACHE_CHECK([whether the target supports hidden visibility], - libgomp_cv_have_attribute_visibility, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], - [], libgomp_cv_have_attribute_visibility=yes, - libgomp_cv_have_attribute_visibility=no) - CFLAGS="$save_CFLAGS"]) - if test $libgomp_cv_have_attribute_visibility = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, - [Define to 1 if the target supports __attribute__((visibility(...))).]) - fi]) - -dnl Check whether the target supports dllexport -AC_DEFUN([LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT], [ - AC_CACHE_CHECK([whether the target supports dllexport], - libgomp_cv_have_attribute_dllexport, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((dllexport)) foo(void) { }], - [], libgomp_cv_have_attribute_dllexport=yes, - libgomp_cv_have_attribute_dllexport=no) - CFLAGS="$save_CFLAGS"]) - if test $libgomp_cv_have_attribute_dllexport = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_DLLEXPORT, 1, - [Define to 1 if the target supports __attribute__((dllexport)).]) - fi]) +dnl +dnl LIBQUAD_ENABLE +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) +dnl +dnl See docs/html/17_intro/configury.html#enable for documentation. +dnl +m4_define([LIBQUAD_ENABLE],[dnl +m4_define([_g_switch],[--enable-$1])dnl +m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl + AC_ARG_ENABLE($1,_g_help, + m4_bmatch([$5], + [^permit ], + [[ + case "$enableval" in + m4_bpatsubst([$5],[permit ])) ;; + *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; + dnl Idea for future: generate a URL pointing to + dnl "onlinedocs/configopts.html#whatever" + esac + ]], + [^$], + [[ + case "$enableval" in + yes|no) ;; + *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; + esac + ]], + [[$5]]), + [enable_]m4_bpatsubst([$1],-,_)[=][$2]) +m4_undefine([_g_switch])dnl +m4_undefine([_g_help])dnl +]) + + +dnl +dnl If GNU ld is in use, check to see if tricky linker opts can be used. If +dnl the native linker is in use, all variables will be defined to something +dnl safe (like an empty string). +dnl +dnl Defines: +dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible +dnl OPT_LDFLAGS='-Wl,-O1' if possible +dnl LD (as a side effect of testing) +dnl Sets: +dnl with_gnu_ld +dnl libquad_ld_is_gold (possibly) +dnl libquad_gnu_ld_version (possibly) +dnl +dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will +dnl set libquad_gnu_ld_version to 12345. Zeros cause problems. +dnl +AC_DEFUN([LIBQUAD_CHECK_LINKER_FEATURES], [ + # If we're not using GNU ld, then there's no point in even trying these + # tests. Check for that first. We should have already tested for gld + # by now (in libtool), but require it now just to be safe... + test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' + test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' + AC_REQUIRE([AC_PROG_LD]) + AC_REQUIRE([AC_PROG_AWK]) + + # The name set by libtool depends on the version of libtool. Shame on us + # for depending on an impl detail, but c'est la vie. Older versions used + # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on + # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually + # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't + # set (hence we're using an older libtool), then set it. + if test x${with_gnu_ld+set} != xset; then + if test x${ac_cv_prog_gnu_ld+set} != xset; then + # We got through "ac_require(ac_prog_ld)" and still not set? Huh? + with_gnu_ld=no + else + with_gnu_ld=$ac_cv_prog_gnu_ld + fi + fi + + # Start by getting the version number. I think the libtool test already + # does some of this, but throws away the result. + libquad_ld_is_gold=no + if $LD --version 2>/dev/null | grep 'GNU gold'> /dev/null 2>&1; then + libquad_ld_is_gold=yes + fi + changequote(,) + ldver=`$LD --version 2>/dev/null | + sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld $[0-9.][0-9.]*$.*/\1/; q'` + changequote([,]) + libquad_gnu_ld_version=`echo $ldver | \ + $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` + + # Set --gc-sections. + if test "$with_gnu_ld" = "notbroken"; then + # GNU ld it is! Joy and bunny rabbits! + + # All these tests are for C++; save the language and the compiler flags. + # Need to do this so that g++ won't try to link in libstdc++ + ac_test_CFLAGS="${CFLAGS+set}" + ac_save_CFLAGS="$CFLAGS" + CFLAGS='-x c++ -Wl,--gc-sections' + + # Check for -Wl,--gc-sections + # XXX This test is broken at the moment, as symbols required for linking + # are now in libsupc++ (not built yet). In addition, this test has + # cored on solaris in the past. In addition, --gc-sections doesn't + # really work at the moment (keeps on discarding used sections, first + # .eh_frame and now some of the glibc sections for iconv). + # Bzzzzt. Thanks for playing, maybe next time. + AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) + AC_TRY_RUN([ + int main(void) + { + try { throw 1; } + catch (...) { }; + return 0; + } + ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) + if test "$ac_test_CFLAGS" = set; then + CFLAGS="$ac_save_CFLAGS" + else + # this is the suspicious part + CFLAGS='' + fi + if test "$ac_sectionLDflags" = "yes"; then + SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" + fi + AC_MSG_RESULT($ac_sectionLDflags) + fi + + # Set linker optimization flags. + if test x"$with_gnu_ld" = x"yes"; then + OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" + fi + + AC_SUBST(SECTION_LDFLAGS) + AC_SUBST(OPT_LDFLAGS) +]) + + +dnl +dnl Add version tags to symbols in shared library (or not), additionally +dnl marking other symbols as private/local (or not). +dnl +dnl --enable-symvers=style adds a version script to the linker call when +dnl creating the shared library. The choice of version script is +dnl controlled by 'style'. +dnl --disable-symvers does not. +dnl + Usage: LIBQUAD_ENABLE_SYMVERS[(DEFAULT)] +dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to +dnl choose a default style based on linker characteristics. Passing +dnl 'no' disables versioning. +dnl +AC_DEFUN([LIBQUAD_ENABLE_SYMVERS], [ + +LIBQUAD_ENABLE(symvers,yes,[=STYLE], + [enables symbol versioning of the shared library], + [permit yes|no|gnu|sun]) + +# If we never went through the LIBQUAD_CHECK_LINKER_FEATURES macro, then we +# don't know enough about $LD to do tricks... +AC_REQUIRE([LIBQUAD_CHECK_LINKER_FEATURES]) +# FIXME The following test is too strict, in theory. +if test $enable_shared = no || test "x$LD" = x; then + enable_symvers=no +else + if test $with_gnu_ld = yes ; then + enable_symvers=gnu + else + case ${target_os} in + # Sun symbol versioning exists since Solaris 2.5. + solaris2.[[5-9]]* | solaris2.1[[0-9]]*) + enable_symvers=sun ;; + *) + enable_symvers=no ;; + esac + fi +fi + +# Check if 'sun' was requested on non-Solaris 2 platforms. +if test x$enable_symvers = xsun ; then + case ${target_os} in + solaris2*) + # All fine. + ;; + *) + # Unlikely to work. + AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) + AC_MSG_WARN([=== you are not targetting Solaris 2.]) + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + ;; + esac +fi + +# Check to see if libgcc_s exists, indicating that shared libgcc is possible. +if test $enable_symvers != no; then + AC_MSG_CHECKING([for shared libgcc]) + ac_save_CFLAGS="$CFLAGS" + CFLAGS=' -lgcc_s' + AC_TRY_LINK(, [return 0;], libquad_shared_libgcc=yes, libquad_shared_libgcc=no) + CFLAGS="$ac_save_CFLAGS" + if test $libquad_shared_libgcc = no; then + cat > conftest.c <<EOF +int main (void) { return 0; } +EOF +changequote(,)dnl + libquad_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ + -shared -shared-libgcc -o conftest.so \ + conftest.c -v 2>&1 >/dev/null \ + | sed -n 's/^.* -lgcc_s$[^ ]*$ .*$/\1/p'` +changequote([,])dnl + rm -f conftest.c conftest.so + if test x${libquad_libgcc_s_suffix+set} = xset; then + CFLAGS=" -lgcc_s$libquad_libgcc_s_suffix" + AC_TRY_LINK(, [return 0;], libquad_shared_libgcc=yes) + CFLAGS="$ac_save_CFLAGS" + fi + fi + AC_MSG_RESULT($libquad_shared_libgcc) +fi + +# For GNU ld, we need at least this version. The format is described in +# LIBQUAD_CHECK_LINKER_FEATURES above. +libquad_min_gnu_ld_version=21400 +# XXXXXXXXXXX libquad_gnu_ld_version=21390 + +# Check to see if unspecified "yes" value can win, given results above. +# Change "yes" into either "no" or a style name. +if test $enable_symvers != no && test $libquad_shared_libgcc = yes; then + if test $with_gnu_ld = yes; then + if test $libquad_gnu_ld_version -ge $libquad_min_gnu_ld_version ; then + enable_symvers=gnu + elif test $libquad_ld_is_gold = yes ; then + enable_symvers=gnu + else + # The right tools, the right setup, but too old. Fallbacks? + AC_MSG_WARN(=== Linker version $libquad_gnu_ld_version is too old for) + AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) + AC_MSG_WARN(=== You would need to upgrade your binutils to version) + AC_MSG_WARN(=== $libquad_min_gnu_ld_version or later and rebuild GCC.) + if test $libquad_gnu_ld_version -ge 21200 ; then + # Globbing fix is present, proper block support is not. + dnl AC_MSG_WARN([=== Dude, you are soooo close. Maybe we can fake it.]) + dnl enable_symvers=??? + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + else + # 2.11 or older. + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + fi + fi + elif test $enable_symvers = sun; then + : All interesting versions of Sun ld support sun style symbol versioning. + else + # just fail for now + AC_MSG_WARN([=== You have requested some kind of symbol versioning, but]) + AC_MSG_WARN([=== either you are not using a supported linker, or you are]) + AC_MSG_WARN([=== not building a shared libgcc_s (which is required).]) + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + fi +fi + +AC_CACHE_CHECK([whether the target supports .symver directive], + libquad_cv_have_as_symver_directive, [ + AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], + [], libquad_cv_have_as_symver_directive=yes, + libquad_cv_have_as_symver_directive=no)]) +if test $libquad_cv_have_as_symver_directive = yes; then + AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, + [Define to 1 if the target assembler supports .symver directive.]) +fi + +AM_CONDITIONAL(LIBQUAD_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) +AM_CONDITIONAL(LIBQUAD_BUILD_VERSIONED_SHLIB_GNU, test $enable_symvers = gnu) +AM_CONDITIONAL(LIBQUAD_BUILD_VERSIONED_SHLIB_SUN, test $enable_symvers = sun) +AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) + +if test $enable_symvers != no ; then + case ${target_os} in + # The Solaris 2 runtime linker doesn't support the GNU extension of + # binding the same symbol to different versions + solaris2*) + symvers_renaming=no ;; + # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. + *) + AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, + [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) + symvers_renaming=yes ;; + esac +fi +AM_CONDITIONAL(LIBQUAD_BUILD_VERSIONED_SHLIB_SOL2, test $symvers_renaming = no) +]) + + +dnl The following comes from libgomp, which has it from libgfortran sinclude(../libtool.m4) dnl The lines below arrange for aclocal not to bring an installed Index: libquadmath/configure.ac =================================================================== --- libquadmath/configure.ac (Revision 166875) +++ libquadmath/configure.ac (Arbeitskopie) @@ -25,8 +25,13 @@ target_alias=${target_alias-$host_alias} AM_INIT_AUTOMAKE([1.9.0 foreign subdir-objects no-dist -Wall -Werror]) -AC_PROG_CC -AM_PROG_CC_C_O +# Are we being configured with some form of cross compiler? +if test "$build" != "$host"; then + LIBQUAD_IS_NATIVE=false + GCC_NO_EXECUTABLES +else + LIBQUAD_IS_NATIVE=true +fi AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) AC_ARG_ENABLE(version-specific-runtime-libs, @@ -39,7 +44,6 @@ AC_ARG_ENABLE(version-specific-runtime-l [version_specific_libs=no]) AC_MSG_RESULT($version_specific_libs) - # Configure libtool AM_PROG_LIBTOOL AC_SUBST(enable_shared) @@ -78,42 +82,22 @@ esac AC_SUBST(toolexecdir) AC_SUBST(toolexeclibdir) +AC_PROG_CC +AM_PROG_CC_C_O + AC_CHECK_LIB([m],[sqrtl],[AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl])]) AC_CHECK_LIB([m],[cbrtl],[AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl])]) -# Check for symbol versioning (copied from libssp). -AC_MSG_CHECKING([whether symbol versioning is supported]) -save_LDFLAGS="$LDFLAGS" -LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" -cat > conftest.map <<EOF -FOO_1.0 { - global: *foo*; bar; local: *; -}; -EOF -AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no]) -if test x$quadmath_use_symver = xno; then - case "$target_os" in - solaris2*) - LDFLAGS="$save_LDFLAGS" - LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" - # Sun ld cannot handle wildcards and treats all entries as undefined. - cat > conftest.map <<EOF -FOO_1.0 { - global: foo; local: *; -}; -EOF - AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no]) - ;; - esac +LIBQUAD_ENABLE_SYMVERS + +if test $enable_symvers = gnu; then + AC_DEFINE(LIBQUAD_GNU_SYMBOL_VERSIONING, 1, + [Define to 1 if GNU symbol versioning is used for libgomp.]) fi -LDFLAGS="$save_LDFLAGS" -AC_MSG_RESULT($quadmath_use_symver) -AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno]) -AM_CONDITIONAL(LIBQUAD_USE_SYMVER_GNU, [test "x$quadmath_use_symver" = xgnu]) -AM_CONDITIONAL(LIBQUAD_USE_SYMVER_SUN, [test "x$quadmath_use_symver" = xsun]) + AC_MSG_CHECKING([whether __float128 is supported]) - AC_TRY_LINK([ + GCC_TRY_COMPILE_OR_LINK([ typedef _Complex float __attribute__((mode(TC))) __complex128; __float128 foo (__float128 x) @@ -136,12 +120,13 @@ AC_MSG_CHECKING([whether __float128 is s foo (1.2Q); bar (1.2Q); ],[ - libquad_have_float128=yes + libquad_cv_have_float128=yes ],[ - libquad_have_float128=no + libquad_cv_have_float128=no ]) AC_MSG_RESULT([$libquad_have_float128]) + dnl dnl Enable the following for a stand-alone library: dnl @@ -149,7 +134,7 @@ dnl if test $libquad_have_float128 = no; dnl AC_MSG_ERROR([__float128 support is required to build this library.]) dnl fi -AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_have_float128" = xyes]) +AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_cv_have_float128" = xyes]) AC_CACHE_SAVE

[Build,Quad,Fortran] PR 46520: Build only with languages=fortran; fix build with cross compiler

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