kmscon

USE flags

• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• drm - Enable Linux DRM for backend
• fbdev - Enable Linux FBDev for backend
• gles2 - Enable GLES2 for backend
• pango - Enable pango font rendering
• pixman - Enable pixman font rendering
• systemd - Enable multiseat support via systemd
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)