2 files changed, 9 insertions, 0 deletions
diff --git a/code/game/bg_lib.c b/code/game/bg_lib.c
index b198f72..e313087 100644
--- a/code/game/bg_lib.c
+++ b/code/game/bg_lib.c
@@ -38,6 +38,8 @@
  * SUCH DAMAGE.
  */
 
+#include "bg_lib.h"
+
 #if defined(LIBC_SCCS) && !defined(lint)
 #if 0
 static char sccsid[] = "@(#)qsort.c	8.1 (Berkeley) 6/4/93";
diff --git a/code/game/bg_lib.h b/code/game/bg_lib.h
index d6deb60..70603d2 100644
--- a/code/game/bg_lib.h
+++ b/code/game/bg_lib.h
@@ -23,6 +23,12 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // compiled for the virtual machine
 
 // This file is NOT included on native builds
+#ifndef BG_LIB_H
+#define BG_LIB_H
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
 
 typedef int size_t;
 
@@ -89,3 +95,4 @@ int abs( int n );
 double fabs( double x );
 double acos( double x );
 
+#endif // BG_LIB_H