KNULLI's es_systems.yml is Batocera's model: it lists every emulator
its configgen knows, and its Config.in selects many of them only on
x86_64 boards, which KNULLI has none of. The platform list now holds
what at least one board selects, read by the targets scraper, plus a
program the launcher runs from the BIOS folder (lexaloffle). 59 cores
and 44 standalone emulators leave the list, with their launcher records.
The targets scraper follows Config.in and every file it sources, so a
select a package declares itself counts (Batocera's mesa3d-rpi4 gives
the Pi 4 OpenGL). A sourced file absent at the pin is named and read as
empty: KNULLI 20260511 sources package/utils/vtree/Config.in, added in
June.
KNULLI builds per board on Batocera's Kconfig model from its own tree (knulli-cfw/knulli-linux at the tag platforms/knulli.yml pins): configs/knulli-*.board, package/system/knulli-system/Config.in, knulli-es-system/es_systems.yml and the knulli-cfw/buildroot submodule. Ten boards, the armhf library builds excluded.
Abdessamad Derraz