Improve accuracy of HAVE_ATOMIC dependency check

[I had to split out the clang check due to clang *really* not liking the __GLIBC_PREREQ macro; -matt] Closes #1456
redis · Aug 8, 2014 · 7e9f24d · 7e9f24d
1 parent a8d3e93
commit 7e9f24d
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/config.h b/src/config.h
@@ -187,9 +187,14 @@ void setproctitle(const char *fmt, ...);
 
 #if (__i386 || __amd64 || __powerpc__) && __GNUC__
 #define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
-#if (GNUC_VERSION >= 40100) || defined(__clang__)
+#if defined(__clang__)
 #define HAVE_ATOMIC
 #endif
+#if (defined(__GLIBC__) && defined(__GLIBC_PREREQ))
+#if (GNUC_VERSION >= 40100 && __GLIBC_PREREQ(2, 6))
+#define HAVE_ATOMIC
+#endif
+#endif
 #endif
 
 #endif