repo: rxvt-unicode-sixel
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commit fc2d3e8532f6b14491b92d015ebbd5412080780d
Author: Emanuele Giaquinta 
Date:   Tue Jun 26 10:46:28 2007 +0000

    gcc-3.4 has __builtin_{ctz,popcount}.

diff --git a/src/rxvtutil.h b/src/rxvtutil.h

--- a/src/rxvtutil.h
+++ b/src/rxvtutil.h
@@ -11,8 +11,7 @@ using namespace std;
 #define PP_STRINGIFY_(a) #a
 #define PP_STRINGIFY(a) PP_STRINGIFY_(a)

-// actually, some gcc-3.x versions work, too
-#define HAVE_GCC_BUILTINS (__GNUC__ >= 4)
+#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))

 #ifndef __attribute__
 # if __GNUC__

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