ObjFW  Diff

		test x"$atomic_ops" = x"none" && atomic_ops="gcc builtins"
		AC_DEFINE(OF_HAVE_GCC_ATOMIC_OPS, 1,
			[Whether gcc atomic operations are available])
		], [AC_MSG_RESULT(no)])

	AC_CHECK_HEADER(libkern/OSAtomic.h, [
		test x"$atomic_ops" = x"none" && atomic_ops="libkern/OSAtomic.h"
		AC_DEFINE(OF_HAVE_LIBKERN_OSATOMIC_H, 1,
			[Whether we have libkern/OSAtomic.h])])
		AC_DEFINE(OF_HAVE_OSATOMIC, 1,
			[Whether we have libkern/OSAtomic.h])
		AC_CHECK_FUNC(OSAtomicAdd64Barrier, [
			AC_DEFINE(OF_HAVE_OSATOMIC_64, 1,
				[Whether we have OSAtomic*64])])])
else
	dnl We can only have one thread - therefore everything is atomic
	atomic_ops="not needed"
fi

AC_MSG_CHECKING(for atomic operations)
if test x"$atomic_ops" != x"none"; then