dnl =====================================
dnl Thread local storage
-support_for__thread=no
-
-AC_MSG_CHECKING(for __thread)
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
+AC_MSG_CHECKING(for thread local storage (TLS) support)
+AC_CACHE_VAL(ac_cv_tls, [
+ ac_cv_tls=none
+ keywords="__thread __declspec(thread)"
+ for kw in $keywords ; do
+ AC_TRY_COMPILE([
#if defined(__MINGW32__) && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
#error This MinGW version has broken __thread support
#endif
#ifdef __OpenBSD__
#error OpenBSD has broken __thread support
#endif
-static __thread int x ;
-int main () { x = 123; return x; }
-]])], support_for__thread=yes)
-if test $support_for__thread = yes; then
- AC_DEFINE([TOOLCHAIN_SUPPORTS__THREAD],[],[Whether the tool chain supports __thread])
-fi
+int $kw test;], [], ac_cv_tls=$kw)
+ done
+])
+AC_MSG_RESULT($ac_cv_tls)
-AC_MSG_RESULT($support_for__thread)
+if test "$ac_cv_tls" != "none"; then
+ AC_DEFINE_UNQUOTED([TLS], $pixman_tls, [The compiler supported TLS storage class])
+fi
dnl
dnl posix tls
fi
])
-if test $support_for__thread = no; then
+if test $ac_cv_tls = none ; then
support_for_pthread_setspecific=no
AC_MSG_CHECKING(for pthread_setspecific)
# define PIXMAN_GET_THREAD_LOCAL(name) \
(&name)
-#elif defined(TOOLCHAIN_SUPPORTS__THREAD)
+#elif defined(TLS)
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
- static __thread type name
+ static TLS type name
# define PIXMAN_GET_THREAD_LOCAL(name) \
(&name)