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/gnu-binutils/recipe.toml

@@ -0,0 +1,38 @@
+[source]
+tar = "https://ftp.gnu.org/gnu/binutils/binutils-2.43.1.tar.xz"
+blake3 = "f074c81313b70eabc58ce9a9411cd771c5fa2433792d0ad8abcc45f603f58ed6"
+patches = ["01_build_fix.patch"]
+script = """
+DYNAMIC_INIT
+
+COOKBOOK_AUTORECONF=autoreconf2.69 autotools_recursive_regenerate -I"$(realpath ./config)"
+cp -fpv ${COOKBOOK_HOST_SYSROOT}/share/libtool/build-aux/{config.sub,config.guess,install-sh} libiberty/
+"""
+
+[build]
+template = "custom"
+dependencies = [
+  "expat",
+  "libgmp",
+  "libmpfr",
+  "zlib",
+]
+script = """
+DYNAMIC_INIT
+
+COOKBOOK_CONFIGURE_FLAGS+=(
+  --target="${GNU_TARGET}"
+  --disable-werror
+  --disable-dependency-tracking
+  --disable-nls
+  --enable-colored-disassembly
+  --enable-gdb
+  --with-system-zlib
+  --with-multilib
+  --with-interwork
+  --with-pic
+  --with-expat
+)
+
+cookbook_configure
+"""