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-rw-r--r--src/atomic_ops/sysdeps/gcc/x86.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/x86.h b/src/atomic_ops/sysdeps/gcc/x86.h
index 4f81773..8d268b6 100644
--- a/src/atomic_ops/sysdeps/gcc/x86.h
+++ b/src/atomic_ops/sysdeps/gcc/x86.h
@@ -43,7 +43,10 @@
/* As of Apple clang-600 (based on LLVM 3.5svn), it has some bug in */
/* double-wide CAS implementation for x64 target. */
# define AO_SKIPATOMIC_double_compare_and_swap_ANY
- /* OS X 10.7 clang-425/x64 lacks __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n */
+# endif
+
+# if defined(__APPLE_CC__)
+ /* OS X 10.7 clang-425 lacks __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n */
/* predefined macro (unlike e.g. OS X 10.11 clang-703). */
# define AO_GCC_FORCE_HAVE_CAS
# endif