Add counters interface

[folly.git] / folly / CPortability.h

diff --git a/folly/CPortability.h b/folly/CPortability.h
index 3b362d2a885b96781ea4a7bbf000574694cb3387..f202ea5b39e7d9dda5336877f2da924a0c6075b8 100644 (file)
--- a/folly/CPortability.h
+++ b/folly/CPortability.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Facebook, Inc.
+ * Copyright 2013-present Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,6 +57,12 @@
 #define FOLLY_HAS_FEATURE(...) 0
 #endif
 
+#if defined(__has_include)
+#define FOLLY_HAS_INCLUDE(...) __has_include(__VA_ARGS__)
+#else
+#define FOLLY_HAS_INCLUDE(...) 0
+#endif
+
 /* Define a convenience macro to test when address sanitizer is being used
  * across the different compilers (e.g. clang, gcc) */
 #if FOLLY_HAS_FEATURE(address_sanitizer) || __SANITIZE_ADDRESS__