--- firefox-48.0/config/rules.mk.orig	2016-08-19 09:34:47.566360001 +0300
+++ firefox-48.0/config/rules.mk	2016-08-19 09:32:29.542107476 +0300
@@ -1344,6 +1344,11 @@
 $(sort $(foreach tier,$(INSTALL_TARGETS_TIERS),$(INSTALL_TARGETS_EXECUTABLES_$(tier)))):
 	$(install_targets_sanity)
 	$(call install_cmd,$(IFLAGS2) '$<' '$(@D)')
+	@if test "$<" = "xpcshell"; then \
+		if type -p "${prefix}/sbin/paxmark.sh" > /dev/null; then \
+			"${prefix}/sbin/paxmark.sh" m "$(@D)/$<"; \
+		fi; \
+	fi
 
 ################################################################################
 # Preprocessing rules