@@ -737,11 +737,10 @@
 		__weak id foo = [Foo alloc];
 		(void)foo;
 	]])
 ], [
 	AC_MSG_RESULT(yes)
-	AC_DEFINE(COMPILER_SUPPORTS_ARC, 1, [Whether the compiler supports ARC])
 	AC_SUBST(RUNTIME_ARC_TESTS_M, RuntimeARCTests.m)
 ], [
 	AC_MSG_RESULT(no)
 ])
 OBJCFLAGS="$old_OBJCFLAGS"