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

scripts/pkg-size.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# This script show the package size of the recipes ("stage.pkgar" and "stage.tar.gz")
+# It must be used by package maintainers to enforce the library linking size policy
+
+if [ $# = 0 ]
+then
+    find recipes \( -name stage.pkgar -o -name stage.tar.gz \) -exec ls -hs {} \;
+    exit 0
+fi
+
+for recipe in $@
+do
+    if [ "$recipe" = "-h" ] || [ "$recipe" = "--help" ]
+    then
+        echo "Usage: $0 [recipe] ..."
+        echo "       For the recipe(s), prints the size of 'stage.pkgar' and 'stage.tar.gz'."
+        echo "       If no recipe is given, then all packages are listed."
+        exit 0
+    fi
+
+    recipe_paths=$(find recipes -name $recipe)
+    for recipe_path in $recipe_paths
+    do
+        if [ -f "$recipe_path/recipe.toml" ] || [ -f "$recipe_path/recipe.sh" ]
+        then
+            find "$recipe_path" \( -name stage.pkgar -o -name stage.tar.gz \) -exec ls -hs {} \;
+        fi
+    done
+done