Reference to porter-nogfx in http://docs.automotivelinux.org/docs/devguides/en/dev/reference/sdk-devkit/docs/part-1/1_7-SDK-compilation-installation.html
This is an old document. It's superseeded by XDS doc and all the "getting started" guides. In master-next, the new workflow proposed by Scott covers the same topics.
Is way outdated.
http://docs.automotivelinux.org/docs/devguides/en/dev/reference/sdk-devkit/docs/part-1/1_7-SDK-compilation-installation.html