--- mozilla/toolkit/mozapps/installer/packager.mk.orig	2012-11-20 06:42:43.000000000 +0800
+++ mozilla/toolkit/mozapps/installer/packager.mk	2012-11-21 11:01:02.214818113 +0800
@@ -920,7 +920,7 @@
 	if test -f $(DIST)/include/xpcom-config.h; then \
 	  $(SYSINSTALL) $(IFLAGS1) $(DIST)/include/xpcom-config.h $(DESTDIR)$(sdkdir); \
 	fi
-	find $(DIST)/sdk -name "*.pyc" | xargs rm -f
+	find $(DIST)/sdk -name "*.pyc" -delete
 	(cd $(DIST)/sdk/lib && tar $(TAR_CREATE_FLAGS) - .) | (cd $(DESTDIR)$(sdkdir)/sdk/lib && tar -xf -)
 	(cd $(DIST)/sdk/bin && tar $(TAR_CREATE_FLAGS) - .) | (cd $(DESTDIR)$(sdkdir)/sdk/bin && tar -xf -)
 	$(RM) -f $(DESTDIR)$(sdkdir)/lib $(DESTDIR)$(sdkdir)/bin $(DESTDIR)$(sdkdir)/include $(DESTDIR)$(sdkdir)/include $(DESTDIR)$(sdkdir)/sdk/idl $(DESTDIR)$(sdkdir)/idl
@@ -941,7 +941,7 @@
 	(cd $(DIST)/host/bin && tar $(TAR_CREATE_FLAGS) - .) | \
 	  (cd $(DIST)/$(MOZ_APP_NAME)-sdk/host/bin && tar -xf -)
 	$(NSINSTALL) -D $(DIST)/$(MOZ_APP_NAME)-sdk/sdk
-	find $(DIST)/sdk -name "*.pyc" | xargs rm -f
+	find $(DIST)/sdk -name "*.pyc" -delete
 	(cd $(DIST)/sdk && tar $(TAR_CREATE_FLAGS) - .) | \
 	  (cd $(DIST)/$(MOZ_APP_NAME)-sdk/sdk && tar -xf -)
 	$(NSINSTALL) -D $(DIST)/$(MOZ_APP_NAME)-sdk/include