linker error: -lgstgl : pkgconfig: gl not build but in gstreamer-plugins-base-1.0.pc

when trying to build a gst-plugins-base linktest 'make' fails.

arm-unknown-linux-gnueabi/bin/ld: cannot find -lgstgl-1.0

in gstreamer-plugins-base-1.0.pc

libraries=allocators app audio fft pbutils riff rtp rtsp sdp tag video gl

However the plugin was not build according to ./configure

configure: *** checking feature: gl elements *** configure: *** for plug-ins: gl *** configure: *** These plugins will not be built: gl

I conclude 'gl' was mistakenly added to the pc file