Gentoo Packages

app-benchmarks/glmark2: Enable GLES2 support
media-libs/gst-plugins-base: Enable OpenGL library and plugin via GLESv2 API (requires egl)
media-libs/mesa: Enable GLESv2 support.

Warning: USE flag 'gles2' used by media-libs/libsdl2 but has no description in metadata.xml, use.local.desc or use.desc

Package	Local Description (use.local.desc)	Metadata Description (metadata.xml)
app-benchmarks/glmark2	-	Enable GLES2 support
media-libs/gst-plugins-base	-	Enable OpenGL library and plugin via GLESv2 API (requires egl)
media-libs/libsdl2	-	-
media-libs/mesa	-	Enable GLESv2 support.

USE Flag: gles2