ObjFW  Diff

		], [
			AC_MSG_ERROR(No supported threads found!)
		])
		;;
	esac

	AC_DEFINE(OF_THREADS, 1, [Whether we have threads])
	AC_SUBST(THREADING_SOURCES, "	\
	AC_SUBST(OFTHREAD_M, "OFThread.m")
		OFThread.m		\
		OFThreadPool.m		\
		OFTLSKey.m		\
		OFMutex.m		\
		OFRecursiveMutex.m	\
		OFCondition.m		\
	")
	AC_SUBST(OFTHREADTESTS_M, "OFThreadTests.m")
	AC_SUBST(OFHTTPREQUESTTESTS_M, "OFHTTPRequestTests.m")
	AC_SUBST(THREADING_H, "threading.h")

	AC_MSG_CHECKING(whether __thread works)
	AC_TRY_LINK([
		/* It seems __thread is buggy with GCC 4.1 */