Install a pkgconfig file for libxbps.

data/Makefile

@@ -0,0 +1,23 @@
+-include ../config.mk
+
+VERSION = 0.12
+PCFILE = libxbps.pc
+
+.PHONY: all
+all:
+	sed -e "s|@@VERSION@@|${VERSION}|g;s|@@PREFIX@@|${PREFIX}|g" \
+		${PCFILE}.in > ${PCFILE}
+
+.PHONY: install
+install:
+	install -d $(DESTDIR)$(PKGCONFIGDIR)
+	install -m644 $(PCFILE) $(DESTDIR)$(PKGCONFIGDIR)
+
+.PHONY: uninstall
+uninstall:
+	-rm -f $(DESTDIR)$(PKGCONFIGDIR)/$(PCFILE)
+
+
+.PHONY: clean
+clean:
+	-rm -f $(PCFILE)

data/libxbps.pc.in

@@ -0,0 +1,10 @@
+prefix=@@PREFIX@@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: XBPS API Library
+Description: The X Binary Package System library
+Version: @@VERSION@@
+Libs: -lprop -lxbps
+Cflags: -I${includedir} -L${libdir}