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--- celt-0.5.1.3.orig/libcelt/ecintrin.h
+++ celt-0.5.1.3/libcelt/ecintrin.h
@@ -52,8 +52,7 @@
/*Count leading zeros.
This macro should only be used for implementing ec_ilog(), if it is defined.
All other code should use EC_ILOG() instead.*/
-#ifdef __GNUC_PREREQ
-#if __GNUC_PREREQ(3,4)
+#if defined(__GNUC__) && ((__GNUC__<<16)+__GNUC_MINOR__) >= 0x304
# if INT_MAX>=2147483647
# define EC_CLZ0 sizeof(unsigned)*CHAR_BIT
# define EC_CLZ(_x) (__builtin_clz(_x))
@@ -61,7 +60,6 @@
# define EC_CLZ0 sizeof(unsigned long)*CHAR_BIT
# define EC_CLZ(_x) (__builtin_clzl(_x))
# endif
-#endif
#endif
#if defined(EC_CLZ)
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