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Bug 521750 - Follow-up: add some actually used compilation options when detecting __thread support [r=bsmedberg]

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Bartłomiej B 2009-11-16 10:48:34 -06:00
parent 00ff1dc6e1
commit 691214a200
1 changed files with 4 additions and 0 deletions
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4
configure.in
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@ -4160,12 +4160,16 @@ if test "$ac_cv_trouble_comparing_to_zero" = yes ; then
AC_DEFINE(HAVE_CPP_TROUBLE_COMPARING_TO_ZERO)
fi
# try harder, when checking for __thread support, see bug 521750 comment #33 and below
_SAVE_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS $DSO_PIC_CFLAGS $DSO_LDOPTS"
AC_CACHE_CHECK(for __thread keyword for TLS variables,
ac_cv_thread_keyword,
[AC_TRY_LINK([__thread bool tlsIsMainThread = false;],
[return tlsIsMainThread;],
ac_cv_thread_keyword=yes,
ac_cv_thread_keyword=no)])
LDFLAGS=$_SAVE_LDFLAGS
if test "$ac_cv_thread_keyword" = yes; then
AC_DEFINE(HAVE_THREAD_TLS_KEYWORD)
fi