diff -ruN x264-snapshot-20180809-2245-stable/common/osdep.h x264-snapshot-20180809-2245-stable-android/common/osdep.h
--- x264-snapshot-20180809-2245-stable/common/osdep.h	2018-08-10 05:45:06.000000000 +0900
+++ x264-snapshot-20180809-2245-stable-android/common/osdep.h	2018-08-10 09:35:33.616293329 +0900
@@ -43,10 +43,8 @@
 #include <math.h>
 #endif
 
-#if !HAVE_LOG2F
 #define log2f(x) (logf(x)/0.693147180559945f)
 #define log2(x) (log(x)/0.693147180559945)
-#endif
 
 #ifdef _MSC_VER
 #define inline __inline