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Sync with GCC 2015-05-13 Eric Botcazou <ebotcazou@adacore.com> * sjlj.m4: New file. 2015-05-04 Trevor Saunders <tbsaunde+gcc@tbsaunde.org> * bitfields.m4: Change int to long long, and use bitfields of width 1 instead of 0. 2015-05-01 Trevor Saunders <tbsaunde+gcc@tbsaunde.org> * bitfields.m4: New file. 2015-04-14 H.J. Lu <hongjiu.lu@intel.com> * bootstrap-mpx.mk: New file. 2015-03-25 Uros Bizjak <ubizjak@gmail.com> PR bootstrap/65537 * bootstrap-lto-noplugin.mk: New build configuration. 2014-11-13 Kirill Yukhin <kirill.yukhin@intel.com> * target-posix: New file. 2014-10-27 Tom Tromey <tromey@redhat.com> * gcc-plugin.m4: New file.users/ARM/embedded-binutils-2_26-branch
H.J. Lu
11 years ago
7 changed files with 210 additions and 0 deletions
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dnl Copyright (C) 2015 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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# Define HAVE_BITFIELD_TYPE_MATTERS if the type of bitfields effects their |
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# alignment. |
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AC_DEFUN([gt_BITFIELD_TYPE_MATTERS], |
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[ |
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AC_CACHE_CHECK([if the type of bitfields matters], gt_cv_bitfield_type_matters, |
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[ |
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AC_TRY_COMPILE( |
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[struct foo1 { char x; char y:1; char z; }; |
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struct foo2 { char x; long long int y:1; char z; }; |
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int foo1test[ sizeof (struct foo1) < sizeof (struct foo2) ? 1 : -1 ]; ], |
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[], gt_cv_bitfield_type_matters=yes, gt_cv_bitfield_type_matters=no) |
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]) |
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if test $gt_cv_bitfield_type_matters = yes; then |
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AC_DEFINE(HAVE_BITFIELD_TYPE_MATTERS, 1, |
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[Define if the type of bitfields effects alignment.]) |
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fi |
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]) |
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# This option enables LTO for stage2 and stage3 on
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# hosts without linker plugin support.
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STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects |
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STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1 -ffat-lto-objects |
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STAGEprofile_CFLAGS += -fno-lto |
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# This option enables -fcheck-pointer-bounds -mmpx for stage2 and stage3.
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STAGE2_CFLAGS += -fcheck-pointer-bounds -mmpx -frandom-seed=1 |
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STAGE3_CFLAGS += -fcheck-pointer-bounds -mmpx -frandom-seed=1 |
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POSTSTAGE1_LDFLAGS += -fcheck-pointer-bounds -mmpx -frandom-seed=1 \
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-static-libmpx -static-libmpxwrappers \
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-B$$r/prev-$(TARGET_SUBDIR)/libmpx \
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-B$$r/prev-$(TARGET_SUBDIR)/libmpx/mpxrt/.libs \
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-B$$r/prev-$(TARGET_SUBDIR)/libmpx/mpxwrap/.libs |
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# gcc-plugin.m4 -*- Autoconf -*- |
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# Check whether GCC is able to be built with plugin support. |
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|
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dnl Copyright (C) 2014 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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|
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# Check for plugin support. |
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# Respects --enable-plugin. |
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# Sets the shell variables enable_plugin and pluginlibs. |
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AC_DEFUN([GCC_ENABLE_PLUGINS], |
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[# Check for plugin support |
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AC_ARG_ENABLE(plugin, |
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[AS_HELP_STRING([--enable-plugin], [enable plugin support])], |
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enable_plugin=$enableval, |
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enable_plugin=yes; default_plugin=yes) |
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pluginlibs= |
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case "${host}" in |
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*-*-darwin*) |
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if test x$build = x$host; then |
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export_sym_check="nm${exeext} -g" |
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elif test x$host = x$target; then |
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export_sym_check="$gcc_cv_nm -g" |
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else |
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export_sym_check= |
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fi |
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;; |
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*) |
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if test x$build = x$host; then |
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export_sym_check="objdump${exeext} -T" |
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elif test x$host = x$target; then |
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export_sym_check="$gcc_cv_objdump -T" |
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else |
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export_sym_check= |
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fi |
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;; |
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esac |
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if test x"$enable_plugin" = x"yes"; then |
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AC_MSG_CHECKING([for exported symbols]) |
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if test "x$export_sym_check" != x; then |
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echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c |
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${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1 |
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if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then |
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: # No need to use a flag |
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AC_MSG_RESULT([yes]) |
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else |
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AC_MSG_RESULT([yes]) |
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AC_MSG_CHECKING([for -rdynamic]) |
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${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1 |
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if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then |
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plugin_rdynamic=yes |
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pluginlibs="-rdynamic" |
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else |
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plugin_rdynamic=no |
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enable_plugin=no |
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fi |
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AC_MSG_RESULT([$plugin_rdynamic]) |
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fi |
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else |
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AC_MSG_RESULT([unable to check]) |
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fi |
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# Check -ldl |
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saved_LIBS="$LIBS" |
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AC_SEARCH_LIBS([dlopen], [dl]) |
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if test x"$ac_cv_search_dlopen" = x"-ldl"; then |
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pluginlibs="$pluginlibs -ldl" |
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fi |
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LIBS="$saved_LIBS" |
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# Check that we can build shared objects with -fPIC -shared |
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saved_LDFLAGS="$LDFLAGS" |
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saved_CFLAGS="$CFLAGS" |
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case "${host}" in |
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*-*-darwin*) |
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CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g` |
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CFLAGS="$CFLAGS -fPIC" |
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LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup" |
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;; |
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*) |
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CFLAGS="$CFLAGS -fPIC" |
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LDFLAGS="$LDFLAGS -fPIC -shared" |
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;; |
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esac |
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AC_MSG_CHECKING([for -fPIC -shared]) |
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AC_TRY_LINK( |
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[extern int X;],[return X == 0;], |
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[AC_MSG_RESULT([yes]); have_pic_shared=yes], |
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[AC_MSG_RESULT([no]); have_pic_shared=no]) |
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if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then |
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pluginlibs= |
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enable_plugin=no |
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fi |
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LDFLAGS="$saved_LDFLAGS" |
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CFLAGS="$saved_CFLAGS" |
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# If plugin support had been requested but not available, fail. |
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if test x"$enable_plugin" = x"no" ; then |
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if test x"$default_plugin" != x"yes"; then |
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AC_MSG_ERROR([ |
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Building GCC with plugin support requires a host that supports |
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-fPIC, -shared, -ldl and -rdynamic.]) |
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fi |
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fi |
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fi |
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]) |
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dnl Check if the compiler is configured for setjmp/longjmp exceptions. |
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AC_DEFUN([GCC_CHECK_SJLJ_EXCEPTIONS], |
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[AC_CACHE_CHECK([whether the compiler is configured for setjmp/longjmp exceptions], |
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ac_cv_sjlj_exceptions, |
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[AC_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM( |
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[[#ifdef __USING_SJLJ_EXCEPTIONS__ |
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this will fail |
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#endif]], |
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[[int i;]])], |
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[ac_cv_sjlj_exceptions=no], |
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[ac_cv_sjlj_exceptions=yes])])]) |
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@ -0,0 +1,12 @@ |
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case "${target}" in |
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*-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu) |
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;; |
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*-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*) |
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;; |
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*-*-solaris2* | *-*-hpux11*) |
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;; |
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*-*-darwin* | *-*-aix*) |
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;; |
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*) |
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UNSUPPORTED=1 ;; |
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esac |
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