added some missing c++ guards.

Quake/platform.h

@@ -24,6 +24,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifndef _QUAKE_PLATFORM_H
 #define _QUAKE_PLATFORM_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* platform dependent way to set the window icon */
 void PL_SetWindowIcon(void);
 
@@ -36,5 +40,9 @@ char *PL_GetClipboardData (void);
 /* show an error dialog */
 void PL_ErrorDialog(const char *text);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif	/* _QUAKE_PLATFORM_H */
 

Quake/strl_fn.h

@@ -1,11 +1,16 @@
-/*	header file for BSD strlcat and strlcpy		*/
+/* strl_fn.h - header file for BSD strlcat and strlcpy  */
 
 #ifndef __STRLFUNCS_H
 #define __STRLFUNCS_H
 
 /* use our own copies of strlcpy and strlcat taken from OpenBSD */
+#ifdef __cplusplus
+extern "C" {
+#endif
 extern size_t q_strlcpy (char *dst, const char *src, size_t size);
 extern size_t q_strlcat (char *dst, const char *src, size_t size);
+#ifdef __cplusplus
+}
+#endif
 
 #endif	/* __STRLFUNCS_H */
-

Quake/zone.h

@@ -91,10 +91,16 @@ Zone block
 
 void Memory_Init (void *buf, int size);
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 void Z_Free (void *ptr);
 void *Z_Malloc (int size);			// returns 0 filled memory
 void *Z_Realloc (void *ptr, int size);
 char *Z_Strdup (const char *s);
+#ifdef __cplusplus
+}
+#endif
 
 void *Hunk_Alloc (int size);		// returns 0 filled memory
 void *Hunk_AllocName (int size, const char *name);