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scripts/build.sh

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+#!/usr/bin/env bash
+# build.sh — wrapper for Mestre Buildroot builds.
+#
+# Usage:
+#   ./scripts/build.sh                  # full build
+#   ./scripts/build.sh menuconfig       # Buildroot menuconfig
+#   ./scripts/build.sh linux-menuconfig # Linux kernel menuconfig
+#   ./scripts/build.sh uboot-menuconfig # U-Boot menuconfig
+#   ./scripts/build.sh <pkg>-rebuild    # Force-rebuild a single package
+#   ./scripts/build.sh clean            # Clean build output
+#   ./scripts/build.sh -- -j4           # Pass arbitrary args through to make
+#
+# On first invocation, the build directory is created and configured from
+# the mestre_x6200_defconfig. Subsequent invocations reuse the existing
+# build directory.
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+BUILD_DIR="$REPO_ROOT/build"
+BR2_EXTERNAL="$REPO_ROOT/br2_external"
+DEFCONFIG="mestre_x6200_defconfig"
+
+# ---------------------------------------------------------------------------
+# Sanity check: submodule must be present
+# ---------------------------------------------------------------------------
+if [ ! -f "$REPO_ROOT/buildroot/Makefile" ]; then
+    echo "!!! Buildroot submodule not initialized."
+    echo "    Run: ./scripts/setup.sh"
+    exit 1
+fi
+
+# ---------------------------------------------------------------------------
+# First-time configuration
+# ---------------------------------------------------------------------------
+if [ ! -f "$BUILD_DIR/.config" ]; then
+    if [ ! -f "$BR2_EXTERNAL/configs/$DEFCONFIG" ]; then
+        echo "!!! Defconfig not found: $BR2_EXTERNAL/configs/$DEFCONFIG"
+        echo "    The defconfig hasn't been added yet. See the project's"
+        echo "    milestone status in README.md."
+        exit 1
+    fi
+
+    echo ">>> First-time configuration: $DEFCONFIG"
+    mkdir -p "$BUILD_DIR"
+    make -C "$REPO_ROOT/buildroot" \
+         BR2_EXTERNAL="$BR2_EXTERNAL" \
+         O="$BUILD_DIR" \
+         "$DEFCONFIG"
+    echo
+fi
+
+# ---------------------------------------------------------------------------
+# Run make in the build directory
+# ---------------------------------------------------------------------------
+# Default to plain `make` if no extra args were passed.
+if [ $# -eq 0 ]; then
+    make -C "$BUILD_DIR"
+else
+    make -C "$BUILD_DIR" "$@"
+fi

scripts/setup.sh

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+#!/usr/bin/env bash
+# setup.sh — bootstrap the Mestre development environment.
+#
+# Idempotent. Safe to run multiple times.
+#
+# Performs:
+#   1. Initializes the Buildroot submodule.
+#   2. Checks that the host has the tools Buildroot needs.
+#
+# On success, you can build with:
+#   ./scripts/build.sh
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$REPO_ROOT"
+
+# ---------------------------------------------------------------------------
+# 1. Buildroot submodule
+# ---------------------------------------------------------------------------
+if [ ! -f "$REPO_ROOT/buildroot/Makefile" ]; then
+    echo ">>> Initializing Buildroot submodule (this may take a minute)..."
+    git submodule update --init buildroot
+else
+    echo ">>> Buildroot submodule already initialized."
+fi
+
+# ---------------------------------------------------------------------------
+# 2. Host prerequisites
+# ---------------------------------------------------------------------------
+# Buildroot's full list lives at:
+#   https://buildroot.org/downloads/manual/manual.html#requirement
+# We check the most commonly missing ones; Buildroot itself will surface
+# anything else we've forgotten.
+echo ">>> Checking host prerequisites..."
+missing=()
+for tool in make gcc g++ patch perl python3 cpio rsync bc unzip wget file which sed; do
+    if ! command -v "$tool" >/dev/null 2>&1; then
+        missing+=("$tool")
+    fi
+done
+
+if [ ${#missing[@]} -gt 0 ]; then
+    echo
+    echo "!!! Missing host tools: ${missing[*]}"
+    echo
+    echo "On Debian/Ubuntu, install with:"
+    echo "    sudo apt-get install build-essential patch perl python3 \\"
+    echo "                         cpio rsync bc unzip wget file"
+    echo
+    echo "See https://buildroot.org/downloads/manual/manual.html#requirement"
+    echo "for the complete list."
+    exit 1
+fi
+
+echo ">>> All required host tools present."
+echo
+echo "Setup complete. Next:"
+echo "    ./scripts/build.sh"