--- iceweasel-33.1.1/mozilla/browser/installer/Makefile.in.orig	2014-11-13 23:49:48.000000000 +0100
+++ iceweasel-33.1.1/mozilla/browser/installer/Makefile.in	2014-11-26 21:30:58.839109076 +0100
@@ -160,6 +160,56 @@
 	rm -f $(DIST)/pack-list.txt $(DIST)/bin-list.txt
 endif
 
+# Add pkg-config files to the install:: target
+pkg_config_files = \
+	libxul.pc \
+	libxul-embedding.pc \
+	mozilla-js.pc \
+	mozilla-plugin.pc \
+	$(NULL)
+
+ifdef MOZ_NATIVE_NSPR
+NSPR_NAME=nspr
+NSPR_VERSION=$(shell $(NSPR_CONFIG) --version)
+else
+pkg_config_files += mozilla-nspr.pc
+NSPR_NAME=mozilla-nspr
+FULL_NSPR_CFLAGS=-I\$${includedir}
+FULL_NSPR_LIBS=$(subst $(prefix),\$${sdkdir},$(shell $(DEPTH)/nsprpub/config/nspr-config --libs))
+NSPR_VERSION=$(shell $(DEPTH)/nsprpub/config/nspr-config --version)
+endif
+
+MOZ_XUL_LINK = -lxpcomglue_s -lxul
+ifdef JS_SHARED_LIBRARY
+MOZ_JS_LINK = -lmozjs
+else
+FINDPATH=bin
+MOZ_JS_LINK = $(MOZ_XUL_LINK)
+endif
+
+%.pc: $(srcdir)/%.pc.in $(GLOBAL_DEPS)
+	cat $< | sed \
+	-e "s|%prefix%|$(prefix)|" \
+	-e "s|%includedir%|$(includedir)|" \
+	-e "s|%idldir%|$(idldir)|" \
+	-e "s|%sdkdir%|$(sdkdir)|" \
+	-e "s|%MOZ_APP_NAME%|$(MOZ_APP_NAME)|" \
+	-e "s|%MOZILLA_VERSION%|$(MOZ_APP_VERSION)|" \
+	-e "s|%WCHAR_CFLAGS%|$(WCHAR_CFLAGS)|" \
+	-e "s|%FULL_NSPR_LIBS%|$(FULL_NSPR_LIBS)|" \
+	-e "s|%FULL_NSPR_CFLAGS%|$(FULL_NSPR_CFLAGS)|" \
+	-e "s|%NSPR_NAME%|$(NSPR_NAME)|" \
+	-e "s|%NSPR_VERSION%|$(NSPR_VERSION)|" \
+	-e "s|%MOZ_XUL_LINK%|$(MOZ_XUL_LINK)|" \
+	-e "s|%MOZ_JS_LINK%|$(MOZ_JS_LINK)|" > $@
+	chmod 644 $@
+
+install:: $(pkg_config_files)
+	@echo pkg_config_file: $(pkg_config_files)
+	$(SYSINSTALL) $(IFLAGS1) $^ $(DESTDIR)$(libdir)/pkgconfig
+
+GARBAGE += $(pkg_config_files)
+
 installer::
 ifdef INSTALLER_DIR
 	$(MAKE) -C $(INSTALLER_DIR)