I'm not 100% sure this header is internal, but it depends on internal
headers, so it should either be internal or massively re-worked.
Anyhow, it has no business being installed until the includes are
fixed.
modules/evas/engines/gl_common/shader/yuy2_nomul_vert.shd \
modules/evas/engines/gl_common/shader/yuy2_vert.shd
-dist_installed_evasmainheaders_DATA += modules/evas/engines/gl_generic/Evas_Engine_GL_Generic.h
GL_GENERIC_SOURCES = \
modules/evas/engines/gl_generic/evas_engine.c