diff options
| author | Jack Howarth <howarth@bromo.med.uc.edu> | 2010-03-30 13:08:52 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-03-30 13:08:52 +0000 |
| commit | 368fabd5a33634289fa1bcd5cf10921dd1ebb667 (patch) | |
| tree | 289b5c46ab914bf871f7cb4ed1773b3ade816a05 /libgcc/configure | |
| parent | 2bcba94ba40f6ed885bbf03d54fb8eab24213e1a (diff) | |
re PR c/43553 (libgcc built with -DHAVE_CC_TLS against xgcc when emutls in use)
2010-03-30 Jack Howarth <howarth@bromo.med.uc.edu>
PR c/43553
* Makefile.in (INTERNAL_CFLAGS): Add @set_use_emutls@.
* configure.ac: Use GCC_CHECK_EMUTLS to see if emulated TLS
is used and substitute set_use_emutls.
* configure: Regenerated.
From-SVN: r157821
Diffstat (limited to 'libgcc/configure')
| -rw-r--r-- | libgcc/configure | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libgcc/configure b/libgcc/configure index b6c003cf94b..f5224276693 100644 --- a/libgcc/configure +++ b/libgcc/configure @@ -556,6 +556,7 @@ LIBOBJS asm_hidden_op extra_parts tmake_file +set_use_emutls set_have_cc_tls vis_hide fixed_point @@ -3811,6 +3812,42 @@ if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then fi +# See if we have emulated thread-local storage. + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the thread-local storage support is from emutls" >&5 +$as_echo_n "checking whether the thread-local storage support is from emutls... " >&6; } +if test "${gcc_cv_use_emutls+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + + gcc_cv_use_emutls=no + echo '__thread int a; int b; int main() { return a = b; }' > conftest.c + if { ac_try='${CC-cc} -Werror -S -o conftest.s conftest.c 1>&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + if grep __emutls_get_address conftest.s > /dev/null; then + gcc_cv_use_emutls=yes + fi + fi + rm -f conftest.* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_use_emutls" >&5 +$as_echo "$gcc_cv_use_emutls" >&6; } + if test "$gcc_cv_use_emutls" = "yes" ; then + +$as_echo "#define USE_EMUTLS 1" >>confdefs.h + + fi +set_use_emutls= +if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then + set_use_emutls="-DUSE_EMUTLS" +fi + + # Conditionalize the makefile for this target machine. tmake_file_= for f in ${tmake_file} |