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-rw-r--r--converter/other/pamtogif.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/converter/other/pamtogif.c b/converter/other/pamtogif.c
index b8df9626..0c8c0f9e 100644
--- a/converter/other/pamtogif.c
+++ b/converter/other/pamtogif.c
@@ -864,7 +864,7 @@ typedef struct {
 static unsigned int
 nSignificantBits( unsigned int const arg ){
 
-#if defined(__GNUC__)  && (__GNUC__ * 100 + __GNUC_MINOR__ >= 304)
+#if HAVE_GCC_BITCOUNT
 
     return (arg == 0) ? 0 : 8 * sizeof(unsigned int) - __builtin_clz(arg);