Index: src/util/rand.c
--- src/util/rand.c.orig
+++ src/util/rand.c
@@ -10,8 +10,10 @@ See <http://creativecommons.org/publicdomain/zero/1.0/
 #include "rand.h"
 #include "runtime.h"
 
+#ifdef __linux__
 #if defined(GIT_RAND_GETENTROPY)
 # include <sys/random.h>
+#endif
 #endif
 
 static uint64_t state[4];
