This line needs to be added to files/04raspberrypi-userland PKG_CONFIG_PATH='/opt/vc/lib/pkgconfig' Also, #494076 needs to get addressed, its closure was incorrect. There are other pkgconfig files missing from the tarball, not just egl.pc
fixed in raspberrypi-userland-0_pre20160305-r1.ebuild commit 06c415c57f1452d3376499ff82128d9b7013f64a Author: Miroslav Šulc <fordfrog@gentoo.org> Date: Thu Mar 10 15:04:43 2016 +0100 media-libs/raspberrypi-userland: bug fixes and improvements fixed bug #539504: support for GLESv1 fixed bugs #499768 and #529424: added pkgconfig files and set environment path to these files fixed location of udev rules file fixed bug #499768: added support for wayland from leio.git overlay Package-Manager: portage-2.2.27