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/shells/bash/recipe.toml

@@ -0,0 +1,24 @@
+[source]
+tar = "https://ftp.gnu.org/gnu/bash/bash-5.2.15.tar.gz"
+blake3 = "c1548e3f2a9b6de5296e18c28b3d2007985e647273e03f039efd3e489edaa41f"
+patches = [
+    "redox.patch"
+]
+
+[build]
+template = "custom"
+dependencies = [
+    "termcap",
+]
+script = """
+# compiled statically
+COOKBOOK_CONFIGURE_FLAGS+=(
+    bash_cv_func_sigsetjmp=no
+    bash_cv_getenv_redef=no
+    --enable-static-link # This ensures loadables are not built, which will fail
+)
+COOKBOOK_MAKE_JOBS=1 # workaround for parallel make bugs
+cookbook_configure
+ln -s "bash" "${COOKBOOK_STAGE}/usr/bin/sh"
+cp -r "${COOKBOOK_RECIPE}/etc" "${COOKBOOK_STAGE}/etc"
+"""