Index: lib/os/os_posix.cpp
--- lib/os/os_posix.cpp.orig
+++ lib/os/os_posix.cpp
@@ -52,6 +52,10 @@
 #include <android/log.h>
 #endif
 
+#ifdef __OpenBSD__
+#include <limits.h>
+#endif
+
 #ifndef PATH_MAX
 #warning PATH_MAX undefined
 #define PATH_MAX 4096
