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/tools/diffutils/recipe.toml

@@ -0,0 +1,21 @@
+[source]
+tar = "https://ftp.gnu.org/gnu/diffutils/diffutils-3.6.tar.xz"
+blake3 = "086a95093c15edcdb826e75ff4de6c2213de6fbd2eb13538d07bdc3286dfb4a4"
+patches = ["diffutils.patch"]
+script = """
+autoreconf
+"""
+
+[build]
+template = "custom"
+script = """
+DYNAMIC_INIT
+COOKBOOK_CONFIGURE_FLAGS+=(
+    gt_cv_locale_fr=false
+    gt_cv_locale_fr_utf8=false
+    gt_cv_locale_ja=false
+    gt_cv_locale_tr_utf8=false
+    gt_cv_locale_zh_CN=false
+)
+cookbook_configure
+"""