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
2026-04-12 19:05:00 +01:00
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+#!/usr/bin/env bash
+# build-redbear.sh — Build Red Bear OS
+#
+# Usage:
+#   ./local/scripts/build-redbear.sh                     # Default: redbear-desktop
+#   ./local/scripts/build-redbear.sh redbear-minimal     # Minimal variant
+#   ./local/scripts/build-redbear.sh redbear-live        # Live ISO variant
+#   APPLY_PATCHES=0 ./local/scripts/build-redbear.sh     # Skip patch application
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+
+CONFIG="${1:-redbear-desktop}"
+JOBS="${JOBS:-$(nproc)}"
+APPLY_PATCHES="${APPLY_PATCHES:-1}"
+
+case "$CONFIG" in
+    redbear-desktop|redbear-minimal|redbear-live)
+        ;;
+    *)
+        echo "ERROR: Unknown config '$CONFIG'"
+        echo "Supported: redbear-desktop, redbear-minimal, redbear-live"
+        exit 1
+        ;;
+esac
+
+echo "========================================"
+echo "       Red Bear OS Build System"
+echo "========================================"
+echo "Config:        $CONFIG"
+echo "Jobs:          $JOBS"
+echo "Apply patches: $APPLY_PATCHES"
+echo "Root:          ${PROJECT_ROOT##*/}"
+echo "========================================"
+echo ""
+
+cd "$PROJECT_ROOT"
+
+# Step 0: Apply local patches
+if [ "$APPLY_PATCHES" = "1" ]; then
+    echo ">>> Applying local patches..."
+
+    apply_patch_dir() {
+        local patch_dir="$1"
+        local target_dir="$2"
+        local label="$3"
+
+        if [ ! -d "$patch_dir" ]; then
+            return 0
+        fi
+
+        for patch_file in "$patch_dir"/*.patch; do
+            [ -f "$patch_file" ] || continue
+            patch_name=$(basename "$patch_file")
+            if [ ! -d "$target_dir" ]; then
+                echo "    SKIP $patch_name ($label source not fetched yet)"
+                continue
+            fi
+            if patch --dry-run -p1 -d "$target_dir" < "$patch_file" > /dev/null 2>&1; then
+                patch -p1 -d "$target_dir" < "$patch_file" > /dev/null 2>&1
+                echo "    OK   $patch_name"
+            else
+                echo "    SKIP $patch_name (already applied or won't apply)"
+            fi
+        done
+    }
+
+    apply_patch_dir "$PROJECT_ROOT/local/patches/kernel"     "$PROJECT_ROOT/recipes/core/kernel/source"     "kernel"
+    apply_patch_dir "$PROJECT_ROOT/local/patches/base"       "$PROJECT_ROOT/recipes/core/base/source"        "base"
+    apply_patch_dir "$PROJECT_ROOT/local/patches/relibc"     "$PROJECT_ROOT/recipes/core/relibc/source"      "relibc"
+    apply_patch_dir "$PROJECT_ROOT/local/patches/bootloader" "$PROJECT_ROOT/recipes/core/bootloader/source"  "bootloader"
+    apply_patch_dir "$PROJECT_ROOT/local/patches/installer"  "$PROJECT_ROOT/recipes/core/installer/source"   "installer"
+    echo ""
+fi
+
+# Step 1: Build cookbook binary
+if [ ! -f "target/release/repo" ]; then
+    echo ">>> Building cookbook binary..."
+    cargo build --release
+fi
+
+# Step 2: Check firmware
+FW_AMD_DIR="$PROJECT_ROOT/local/firmware/amdgpu"
+if [ "$CONFIG" != "redbear-minimal" ]; then
+    if [ -d "$FW_AMD_DIR" ] && [ -n "$(ls -A "$FW_AMD_DIR" 2>/dev/null)" ]; then
+        FW_COUNT=$(ls "$FW_AMD_DIR"/*.bin 2>/dev/null | wc -l)
+        echo ">>> Found $FW_COUNT AMD firmware blobs"
+    else
+        echo ">>> WARNING: No AMD firmware blobs found."
+        echo "    Run: ./local/scripts/fetch-firmware.sh"
+        echo "    GPU driver will NOT function without firmware."
+    fi
+    echo ""
+fi
+
+# Step 3: Build
+echo ">>> Building Red Bear OS with config: $CONFIG"
+echo ">>> This may take 30-60 minutes on first build..."
+CI=1 make all "CONFIG_NAME=$CONFIG" "JOBS=$JOBS"
+
+# Step 4: Report
+ARCH="${ARCH:-$(uname -m)}"
+echo ""
+echo "========================================"
+echo "         Build Complete!"
+echo "========================================"
+echo "Image: build/$ARCH/$CONFIG/harddrive.img"
+echo ""
+echo "To run in QEMU:"
+echo "  make qemu QEMUFLAGS=\"-m 4G\""
+echo ""
+echo "To build live ISO:"
+echo "  make live CONFIG_NAME=$CONFIG"
+echo ""
+echo "To burn to USB (verify device first!):"
+echo "  dd if=build/$ARCH/$CONFIG/harddrive.img of=/dev/sdX bs=4M status=progress"