[Pixman] [PATCH] Fix pixman build with older GCC releases

[Brad Smith]

The following diff fixes building pixman with older GCC releases such as GCC 3.3.


diff --git a/pixman/pixman-matrix.c b/pixman/pixman-matrix.c
index 89b9682..cacc05c 100644
--- a/pixman/pixman-matrix.c
+++ b/pixman/pixman-matrix.c
@@ -37,7 +37,8 @@
 static force_inline int
 count_leading_zeros (uint32_t x)
 {
-#ifdef __GNUC__
+#if defined(__GNUC__) && \
+	(__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
     return __builtin_clz (x);
 #else
     int n = 0;

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