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authorRalf Wildenhues <Ralf.Wildenhues@gmx.de>2009-08-16 12:49:48 +0000
committerRalf Wildenhues <Ralf.Wildenhues@gmx.de>2009-08-16 12:49:48 +0000
commitca892441083947f02cbf7559893732712e77e0eb (patch)
tree1c3ae0666017a512b043ff748d9cccd9ddb71191 /config/tls.m4
parent1d2755acd0ac66978e0d00b3cab0112cf1488bbe (diff)
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Sync config/ from GCC:
--- config/ChangeLog +++ config/ChangeLog @@ -19,6 +19,10 @@ * tls.m4 (GCC_CHECK_TLS): Also test TLS in a shared library when cross-compiling. +2009-06-25 Olivier Hainque <hainque@adacore.com> + + * config/mh-ppc-aix (BOOT_ADAFLAGS): Remove -mminimal-toc. + 2009-05-26 Rafael Avila de Espindola <espindola@google.com> * plugins.m4: New. @@ -39,6 +43,27 @@ "# no Tcl configs found". (SC_LOAD_TKCONFIG): Similarily for TK_BIN_DIR. +2009-04-09 Jakub Jelinek <jakub@redhat.com> + + * lead-dot.m4: Change copyright header to refer to version + 3 of the GNU General Public License and to point readers at the + COPYING3 file and the FSF's license web page. + * warnings.m4: Likewise. + +2009-02-11 Kai Tietz <kai.tietz@onevision.com> + + * mh-cygwin (LDFLAGS): Add linker option to increase stack limit + up to 8MB. + +2009-01-23 Jie Zhang <jie.zhang@analog.com> + + * tls.m4 (GCC_CHECK_EMUTLS): Define. + +2008-12-21 Andrew Pinski <pinskia@gmail.com> + + PR target/38300 + * unwind_ipinfo.m4: Darwin before 9 does not have _Unwind_GetIPInfo. + 2008-11-21 Kai Tietz <kai.tietz@onevision.com> Fix PR/25502
Diffstat (limited to 'config/tls.m4')
-rw-r--r--config/tls.m418
1 files changed, 18 insertions, 0 deletions
diff --git a/config/tls.m4 b/config/tls.m4
index 79cf382..ef7e6d0 100644
--- a/config/tls.m4
+++ b/config/tls.m4
@@ -104,3 +104,21 @@ AC_DEFUN([GCC_CHECK_CC_TLS], [
AC_DEFINE(HAVE_CC_TLS, 1,
[Define to 1 if the target assembler supports thread-local storage.])
fi])
+
+dnl Check whether TLS is emulated.
+AC_DEFUN([GCC_CHECK_EMUTLS], [
+ AC_CACHE_CHECK([whether the thread-local storage support is from emutls],
+ gcc_cv_use_emutls, [
+ gcc_cv_use_emutls=no
+ echo '__thread int a; int b; int main() { return a = b; }' > conftest.c
+ if AC_TRY_COMMAND(${CC-cc} -Werror -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD); then
+ if grep __emutls_get_address conftest.s > /dev/null; then
+ gcc_cv_use_emutls=yes
+ fi
+ fi
+ rm -f conftest.*
+ ])
+ if test "$gcc_cv_use_emutls" = "yes" ; then
+ AC_DEFINE(USE_EMUTLS, 1,
+ [Define to 1 if the target use emutls for thread-local storage.])
+ fi])