$OpenBSD$

Index: transcoder/basisu_containers.h
--- transcoder/basisu_containers.h.orig
+++ transcoder/basisu_containers.h
@@ -5,7 +5,12 @@
 #include <stdint.h>
 #include <assert.h>
 #include <algorithm>
+
+#ifdef __linux__
+// Only for malloc_usable_size() in basisu_containers_impl.h
 #include <malloc.h>
+#define HAS_MALLOC_USABLE_SIZE=1
+#endif
 
 #ifdef _MSC_VER
 #define BASISU_FORCE_INLINE __forceinline
@@ -1872,4 +1877,4 @@ namespace std
       a.swap(b);
    }
 
-} // namespace std
\ No newline at end of file
+} // namespace std
