ObjFW  Diff

			], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(OF_HAVE__THREAD_LOCAL, 1,
					[Whether _Thread_local works])
			])
		], [
			AC_MSG_RESULT(no)
		])

		AC_MSG_CHECKING(whether __thread works)
		AC_TRY_LINK([
			/* It seems __thread is buggy with GCC 4.1 */
			#if __GNUC__ == 4 && __GNUC_MINOR__ < 2
			# error buggy
			#endif
			AC_MSG_CHECKING(whether __thread works)
			AC_TRY_LINK([
				/* It seems __thread is buggy with GCC 4.1 */
				#if __GNUC__ == 4 && __GNUC_MINOR__ < 2
				# error buggy
				#endif

			__thread int x = 0;
		], [
			x++;
		], [
			AS_IF([test x"$enable_shared" != x"no"], [
				old_OBJCFLAGS="$OBJCFLAGS"
				OBJCFLAGS="$OBJCFLAGS -fPIC"
				AC_TRY_COMPILE([
					__thread int x = 0;
				], [
					x++;
				], [
					AC_MSG_RESULT(yes)
					AC_DEFINE(OF_HAVE___THREAD, 1,
						[Whether __thread works])
				], [
					AC_MSG_RESULT(no)
				])
				OBJCFLAGS="$old_OBJCFLAGS"
			], [
				AC_MSG_RESULT(yes)
				AC_DEFINE(OF_HAVE___THREAD, 1,
					[Whether __thread works])
			])
		], [
			AC_MSG_RESULT(no)
				__thread int x = 0;
			], [
				x++;
			], [
				AS_IF([test x"$enable_shared" != x"no"], [
					old_OBJCFLAGS="$OBJCFLAGS"
					OBJCFLAGS="$OBJCFLAGS -fPIC"
					AC_TRY_COMPILE([
						__thread int x = 0;
					], [
						x++;
					], [
						AC_MSG_RESULT(yes)
						AC_DEFINE(OF_HAVE___THREAD, 1,
							[Whether __thread works]
						)
					], [
						AC_MSG_RESULT(no)
					])
					OBJCFLAGS="$old_OBJCFLAGS"
				], [
					AC_MSG_RESULT(yes)
					AC_DEFINE(OF_HAVE___THREAD, 1,
						[Whether __thread works])
				])
			], [
				AC_MSG_RESULT(no)
			])
		])
	])

	atomic_ops="none"

	AC_MSG_CHECKING(whether __sync_* works)
	AC_TRY_LINK([#include <stdint.h>], [