diff -up mozilla-beta/toolkit/crashreporter/client/Makefile.in.gcc47 mozilla-beta/toolkit/crashreporter/client/Makefile.in
--- mozilla-beta/toolkit/crashreporter/client/Makefile.in.gcc47	2012-01-30 14:41:14.475441039 -0500
+++ mozilla-beta/toolkit/crashreporter/client/Makefile.in	2012-01-30 14:43:03.587646656 -0500
@@ -69,6 +69,9 @@ CPPSRCS = \
   $(STDCXX_COMPAT) \
   $(NULL)
 
+# Needed for moz_free
+LIBS += -L$(LIBXUL_DIST)/lib -lmozalloc
+
 ifeq ($(OS_ARCH),WINNT)
 CPPSRCS += crashreporter_win.cpp
 LIBS += \