Red Bear OS — microkernel OS in Rust, based on Redox

Derivative of Redox OS (https://www.redox-os.org) adding:
- AMD GPU driver (amdgpu) via LinuxKPI compat layer
- ext4 filesystem support (ext4d scheme daemon)
- ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG)
- Custom branding (hostname, os-release, boot identity)

Build system is full upstream Redox with RBOS overlay in local/.
Patches for kernel, base, and relibc are symlinked from local/patches/
and protected from make clean/distclean. Custom recipes live in
local/recipes/ with symlinks into the recipes/ search path.

Build:  make all CONFIG_NAME=redbear-full
Sync:   ./local/scripts/sync-upstream.sh

recipes/wip/games/engines/openlara/recipe.toml

@@ -0,0 +1,20 @@
+#TODO: Compiled, not tested further
+[source]
+git = "https://github.com/XProger/OpenLara"
+
+[build]
+template = "custom"
+dependencies = [
+    "sdl2",
+]
+script = """
+DYNAMIC_INIT
+SRC="${COOKBOOK_SOURCE}/src"
+mkdir -p "${COOKBOOK_STAGE}/usr/games/OpenLara"
+${CXX} "-I${COOKBOOK_SYSROOT}/include" "-I$SRC/" ${LDFLAGS} -DSDL2_GLES -D_GAPI_GLES2 -std=c++11 \
+  -O3 -fno-exceptions -fno-rtti -ffunction-sections -fdata-sections -Wl,--gc-sections -DNDEBUG -D__SDL2__ \
+  -dynamic -lSDL2 -lGLESv2 -lEGL $("${PKG_CONFIG}" --libs osmesa) -o OpenLara \
+  $SRC/platform/sdl2/main.cpp "$SRC/libs/stb_vorbis/stb_vorbis.c" "$SRC/libs/minimp3/minimp3.cpp" "$SRC/libs/tinf/tinflate.c"
+cp -rv "${COOKBOOK_RECIPE}/assets" "${COOKBOOK_STAGE}/usr/games/sdl2_gears/"
+cp OpenLara ${COOKBOOK_STAGE}/usr/games/OpenLara/OpenLara
+"""