--- a/xulrunner/installer/Makefile.in
+++ b/xulrunner/installer/Makefile.in
@@ -97,16 +97,23 @@ NSPR_VERSION=$(shell $(NSPR_CONFIG) --ve
 else
 pkg_config_files += mozilla-nspr.pc
 NSPR_NAME=mozilla-nspr
 FULL_NSPR_CFLAGS=-I\$${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 -lxpcom
+ifdef JS_SHARED_LIBRARY
+MOZ_JS_LINK = -lmozjs
+else
+MOZ_JS_LINK = $(MOZ_XUL_LINK)
+endif
+
 $(warning FULL_NSPR_CFLAGS=$(FULL_NSPR_CFLAGS))
 
 ifndef MOZ_NATIVE_NSS
 pkg_config_files += mozilla-nss.pc
 endif
 
 %.pc: $(srcdir)/%.pc.in $(GLOBAL_DEPS)
 	cat $< | sed \
@@ -116,16 +123,18 @@ endif
 	-e "s|%sdkdir%|$(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 += $(MOZILLA_VERSION).system.conf $(pkg_config_files)
 

--- a/xulrunner/installer/libxul.pc.in
+++ b/xulrunner/installer/libxul.pc.in
@@ -2,10 +2,10 @@ prefix=%prefix%
 sdkdir=%sdkdir%
 includedir=%includedir%
 idldir=%idldir%
 
 Name: libxul
 Description: The Mozilla Runtime and Embedding Engine
 Version: %MOZILLA_VERSION%
 Requires: %NSPR_NAME% >= %NSPR_VERSION%
-Libs: -L${sdkdir}/lib -lxpcomglue_s -lxul -lxpcom
+Libs: -L${sdkdir}/lib %MOZ_XUL_LINK%
 Cflags: -I${includedir} %WCHAR_CFLAGS%

--- a/xulrunner/installer/mozilla-js.pc.in
+++ b/xulrunner/installer/mozilla-js.pc.in
@@ -1,10 +1,10 @@
 prefix=%prefix%
 sdkdir=%sdkdir%
 includedir=%includedir%
 
 Name: JavaScript
 Description: The Mozilla JavaScript Library
 Version: %MOZILLA_VERSION%
 Requires: %NSPR_NAME% >= %NSPR_VERSION%
-Libs: -L${sdkdir}/lib -lmozjs
+Libs: -L${sdkdir}/lib %MOZ_JS_LINK%
 Cflags: -I${includedir} -DXP_UNIX -DJS_THREADSAFE