add a pkg-config file

Signed-off-by: Luc Verhaegen <libv@skynet.be>

Makefile.am

 SUBDIRS = src
+
+pkgconfigdir=$(libdir)/pkgconfig
+pkgconfig_DATA=libump.pc
+
+$(pkgconfig_DATA): libump.pc.in

configure.ac

@@ -41,6 +41,7 @@ AC_CONFIG_FILES([
 	Makefile
 	src/Makefile
 	src/ump.h
+	libump.pc
 ])
 
 AC_OUTPUT

libump.pc.in

+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libump
+Description: ARMs unified memory provider library
+Version: @PACKAGE_VERSION@
+Cflags: -I${includedir}/ump
+Libs: -L${libdir} -lUMP