Index: nsDebugImpl.cpp
===================================================================
RCS file: /cvsroot//cvsroot/mozilla/xpcom/base/nsDebugImpl.cpp,v
retrieving revision 3.7
diff -u -r3.7 nsDebugImpl.cpp
--- nsDebugImpl.cpp
+++ nsDebugImpl.cpp
@@ -66,7 +66,10 @@
 #if defined(__GNUC__) && defined(__i386)
 #  define DebugBreak() { asm("int $3"); }
 #elif defined(__APPLE__)
-#  include "MacTypes.h"
+extern "C" {
+void
+Debugger(void);
+}
 #  define DebugBreak() { Debugger(); }
 #else
 #  define DebugBreak()