diff -up xulrunner-15.0/mozilla-beta/toolkit/crashreporter/client/Makefile.in.gcc47 xulrunner-15.0/mozilla-beta/toolkit/crashreporter/client/Makefile.in
--- xulrunner-15.0/mozilla-beta/toolkit/crashreporter/client/Makefile.in.gcc47	2012-08-15 07:48:31.000000000 +0200
+++ xulrunner-15.0/mozilla-beta/toolkit/crashreporter/client/Makefile.in	2012-08-20 15:05:41.782947739 +0200
@@ -34,6 +34,9 @@ CPPSRCS = \
   crashreporter.cpp \
   $(NULL)
 
+# Needed for moz_free
+LIBS += -L$(LIBXUL_DIST)/lib -lmozalloc
+
 ifeq ($(OS_ARCH),WINNT)
 CPPSRCS += crashreporter_win.cpp
 LIBS += \