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/fps/zerospades-free/recipe.toml

@@ -0,0 +1,43 @@
+#TODO dependency conflict. Glew wants GLX but mesa uses orbital backend.
+# build instructions: https://github.com/yvt/openspades#on-unixes-from-source
+[source]
+git = "https://github.com/siecvi/zerospades"
+shallow_clone = true
+patches = [
+    "redox.patch"
+]
+
+[build]
+template = "custom"
+dependencies = [
+    "glew",
+    "openssl3",
+    "sdl2",
+    "sdl2-image",
+    "freealut",
+    "freetype2",
+    "libopus",
+    "opusfile",
+    "libjpeg",
+    "openal",
+    "curl",
+    # "libxinerama",
+    # "libxft",
+]
+dev-dependencies = [
+    "libstdcxx",
+]
+script = """
+DYNAMIC_INIT
+export LDFLAGS+=" $("${PKG_CONFIG}" --libs osmesa)"
+COOKBOOK_CMAKE_FLAGS+=(
+    -DOPENSPADES_NONFREE_RESOURCES=OFF
+    -DUSE_INTERNAL_OPENAL=OFF
+)
+cookbook_cmake
+"""
+
+[package]
+dependencies = [
+    "openspades-free-pak"
+]

recipes/wip/games/fps/zerospades-free/redox.patch

@@ -0,0 +1,46 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 2f59b92..9f98ab9 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -145,7 +145,7 @@ if(CMAKE_COMPILER_IS_GNUCXX)
+ 
+ 	if(CMAKE_BUILD_TYPE MATCHES "Release")
+ 		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
+-		set(CMAKE_EXE_LINKER_FLAGS "-s")
++		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s")
+ 	endif()
+ 
+ elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+diff --git a/Sources/Audio/ALFuncs.cpp b/Sources/Audio/ALFuncs.cpp
+index 92c63f5..1eff792 100644
+--- a/Sources/Audio/ALFuncs.cpp
++++ b/Sources/Audio/ALFuncs.cpp
+@@ -271,7 +271,8 @@ namespace al {
+ 	}
+ 
+ 	void Link(void) {
+-#ifdef OPENAL_SOFT
++// redox: weak link errors
++#ifndef OPENAL_SOFT
+ 		SPLog("Using OpenAL Soft - direct linking, initializing function pointers.");
+ 		// Directly assign function pointers to OpenAL Soft functions
+ 		qalEnable = alEnable;
+diff --git a/Sources/CMakeLists.txt b/Sources/CMakeLists.txt
+index 4438506..46ace0a 100644
+--- a/Sources/CMakeLists.txt
++++ b/Sources/CMakeLists.txt
+@@ -181,8 +181,8 @@ endif()
+ 
+ if(WIN32)
+ 	target_link_libraries(OpenSpades ws2_32.lib winmm.lib)
+-elseif(UNIX AND NOT APPLE)
+-	target_link_libraries(OpenSpades Xext)
++#elseif(UNIX AND NOT APPLE)
++#	target_link_libraries(OpenSpades Xext)
+ endif()
+ 
+ if(UNIX)
+diff --git a/openal-soft b/openal-soft
+--- a/openal-soft
++++ b/openal-soft
+@@ -1 +1 @@