8a0d8a5c46
Sync with gcc: 2006-12-19 Paolo Bonzini <bonzini@gnu.org> * configure.in: Remove "$build" case for powerpc-*-darwin* since it only affects bootstrap and could be tested on "$host" as well. * configure: Regenerate. * config/mh-ppc-darwin: Add to the stage1 cflags here. 2006-12-19 Paolo Bonzini <bonzini@gnu.org> PR bootstrap/29544 * Makefile.def (flags_to_pass): Add STAGE1_CHECKING. (bootstrap_stage): Add STAGE1_CHECKING to stage1 configure flags, move here comment from Makefile.tpl. * Makefile.tpl: Move some definitions higher in the file. (STAGE1_CHECKING): New. * configure.in: Add --enable-stage1-checking. * configure: Regenerate. * Makefile.in: Regenerate. 2006-12-03 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * configure.in: Update error message for missing GMP/MPFR. * configure: Regenerate. 2006-12-02 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * configure.in: Update MPFR version in error message. * configure: Regenerate. 2006-11-26 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * configure.in (--with-mpfr-dir, --with-gmp-dir): Remove flags. (--with-mpfr-include, --with-mpfr-lib, --with-gmp-include, --with-gmp-lib): New flags. * configure: Regenerate. config: 2006-12-04 Eric Botcazou <ebotcazou@libertysurf.fr> * tls.m4 (GCC_CHECK_TLS): Do not test TLS with static linking if static linking doesn't even work.
24 lines
1 KiB
Text
24 lines
1 KiB
Text
dnl Check whether the target supports TLS.
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AC_DEFUN([GCC_CHECK_TLS], [
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GCC_ENABLE(tls, yes, [], [Use thread-local storage])
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AC_CACHE_CHECK([whether the target supports thread-local storage],
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have_tls, [
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AC_RUN_IFELSE([__thread int a; int b; int main() { return a = b; }],
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[dnl If the test case passed with dynamic linking, try again with
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dnl static linking, but only if static linking is supported (not
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dnl on Solaris 10). This fails with some older Red Hat releases.
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="-static $LDFLAGS"
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AC_LINK_IFELSE([int main() { return 0; }],
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AC_RUN_IFELSE([__thread int a; int b; int main() { return a = b; }],
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[have_tls=yes], [have_tls=no],[]),
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[have_tls=yes])
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LDFLAGS="$save_LDFLAGS"],
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[have_tls=no],
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[AC_LINK_IFELSE([__thread int a; int b; int main() { return a = b; }],
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[have_tls=yes], [have_tls=no])]
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)])
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if test "$enable_tls $have_tls" = "yes yes"; then
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AC_DEFINE(HAVE_TLS, 1,
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[Define to 1 if the target supports thread-local storage.])
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fi])
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