diff -Naur mozjs-45.0.2-orig/js/src/Makefile.in mozjs-45.0.2/js/src/Makefile.in
--- mozjs-45.0.2-orig/js/src/Makefile.in	2017-11-14 02:27:34.021241107 +0300
+++ mozjs-45.0.2/js/src/Makefile.in	2017-11-14 02:29:07.255550711 +0300
@@ -175,10 +175,13 @@
 SCRIPTS = $(JS_CONFIG_NAME)
 SDK_BINARY = $(JS_CONFIG_NAME)
 
-$(LIBRARY_NAME).pc: js.pc
+$(JS_CONFIG_NAME).pc: js.pc
 	cp $^ $@
 
-install:: $(LIBRARY_NAME).pc
+$(JS_LIBRARY_NAME).pc: js.pc
+	cp $^ $@
+
+install:: $(JS_CONFIG_NAME).pc
 	$(SYSINSTALL) $^ $(DESTDIR)$(libdir)/pkgconfig
 
 install:: js-config.h