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-rw-r--r--src/libthread/threadimpl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libthread/threadimpl.h b/src/libthread/threadimpl.h
index 3d68299a..76f676f0 100644
--- a/src/libthread/threadimpl.h
+++ b/src/libthread/threadimpl.h
@@ -21,7 +21,7 @@ extern int swapcontext(ucontext_t*, ucontext_t*);
extern void makecontext(ucontext_t*, void(*)(), int, ...);
#endif
-#if defined(__APPLE__) && !defined(__DARWIN_UNIX03)
+#if defined(__APPLE__) && MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
# define mcontext libthread_mcontext
# define mcontext_t libthread_mcontext_t
# define ucontext libthread_ucontext