--- a/src/threading.h
+++ b/src/threading.h
@@ -110,7 +110,7 @@ enum e_status { PENDING, RUNNING, WAITIN
   #endif // PLATFORM_WIN32
   #include <pthread.h>
 
-  #ifdef PLATFORM_LINUX
+  #if defined(PLATFORM_LINUX) && defined(__GLIBC__)
   # define _MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
   #else
     /* OS X, ... */
