Something

$ cat gstreamer-plugins-base-0.10.pc 
prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include/gstreamer-0.10
pluginsdir=${exec_prefix}/lib/gstreamer-0.10

Name: GStreamer Base Plugins Libraries
Description: Streaming media framework, base plugins libraries
Requires: gstreamer-0.10 
Version: 0.10.10
Libs: -L${libdir}
Cflags: -I${includedir}

libraries=audio cdda floatcast interfaces netbuffer riff rtp tag video