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-rw-r--r--src/google/protobuf/stubs/atomicops.h3
-rw-r--r--src/google/protobuf/stubs/platform_macros.h3
2 files changed, 4 insertions, 2 deletions
diff --git a/src/google/protobuf/stubs/atomicops.h b/src/google/protobuf/stubs/atomicops.h
index 76c026c9..8ddd2508 100644
--- a/src/google/protobuf/stubs/atomicops.h
+++ b/src/google/protobuf/stubs/atomicops.h
@@ -192,7 +192,8 @@ GOOGLE_PROTOBUF_ATOMICOPS_ERROR
#include <google/protobuf/stubs/atomicops_internals_mips_gcc.h>
#elif defined(__native_client__)
#include <google/protobuf/stubs/atomicops_internals_pnacl.h>
-#elif (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
+#elif (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)) || \
+ (defined(__clang__) && __has_extension(c_atomic))
#include <google/protobuf/stubs/atomicops_internals_generic_gcc.h>
#else
GOOGLE_PROTOBUF_ATOMICOPS_ERROR
diff --git a/src/google/protobuf/stubs/platform_macros.h b/src/google/protobuf/stubs/platform_macros.h
index 4cc46df4..02c79a61 100644
--- a/src/google/protobuf/stubs/platform_macros.h
+++ b/src/google/protobuf/stubs/platform_macros.h
@@ -63,7 +63,8 @@
#elif defined(__pnacl__)
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
#elif defined(__GNUC__) && \
- (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
+ ((((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)) || \
+ (defined(__clang__) && __has_extension(c_atomic)))
// We fallback to the generic GCC >= 4.7 implementation in atomicops.h
# if __LP64__
# define GOOGLE_PROTOBUF_ARCH_64_BIT 1