Add docker build system

scripts/build-kernel.sh

@@ -72,6 +72,4 @@ echo "=== Build complete! ==="
 echo ""
 echo "Running kernel in QEMU..."
 echo "(Press Ctrl+A then X to exit)"
-echo ""
-
-qemu-system-i386 -kernel "$OUT_DIR/kernel"
+echo ""

scripts/build-picolibc.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+# Script to build picolibc for i686 freestanding environment
+
+set -e
+
+PICOLIBC_DIR="picolibc"
+BUILD_DIR="build/picolibc"
+INSTALL_DIR="$(pwd)/picolibc-install"
+
+echo "=== Building Picolibc for i686 freestanding ==="
+
+# Check if picolibc exists
+if [ ! -d "$PICOLIBC_DIR" ]; then
+    echo "Error: Picolibc source not found at $PICOLIBC_DIR"
+    echo "Cloning..."
+    git clone --branch 1.8.10 https://github.com/picolibc/picolibc.git "$PICOLIBC_DIR"
+fi
+
+# Get current version
+cd "$PICOLIBC_DIR"
+CURRENT_VERSION=$(git describe --tags 2>/dev/null || echo "unknown")
+echo "Using picolibc version: $CURRENT_VERSION"
+cd ..
+
+# Create build directory
+mkdir -p "$BUILD_DIR"
+
+echo "Configuring picolibc with meson..."
+meson setup "$BUILD_DIR" "$PICOLIBC_DIR" \
+    --cross-file picolibc-i686.txt \
+    --prefix="$INSTALL_DIR" \
+    --wipe \
+    -Dmultilib=false \
+    -Dpicocrt=false \
+    -Dsemihost=false \
+    -Dspecsdir=none \
+    -Dtinystdio=true \
+    -Dio-long-long=true \
+    -Dformat-default=double \
+    -Dtests=false
+
+echo "Building picolibc..."
+meson compile -C "$BUILD_DIR"
+
+echo "Installing picolibc..."
+meson install -C "$BUILD_DIR"
+
+echo ""
+echo "=== Picolibc build complete! ==="
+echo "Installation directory: $INSTALL_DIR"
+echo ""
+echo "To use picolibc in your kernel:"
+echo "  Include path: -I$INSTALL_DIR/include"
+echo "  Library path: -L$INSTALL_DIR/lib"
+echo "  Link with: -lc"

scripts/build-with-picolibc.sh

@@ -1,59 +0,0 @@
-#!/bin/bash
-# Build script for kernel with picolibc
-
-set -e
-
-# Paths
-PICOLIBC_INSTALL="$(pwd)/picolibc-install"
-BUILD_DIR="build"
-OUT_DIR="$BUILD_DIR/out"
-
-# Check if picolibc is installed
-if [ ! -d "$PICOLIBC_INSTALL" ]; then
-    echo "Error: Picolibc not found at $PICOLIBC_INSTALL"
-    echo "Please run ./build-picolibc.sh first"
-    exit 1
-fi
-
-# Create build directories
-mkdir -p "$BUILD_DIR"
-mkdir -p "$OUT_DIR"
-
-# Compiler flags
-CFLAGS="-m32 -march=i686 -ffreestanding -nostdlib -fno-builtin"
-CFLAGS="$CFLAGS -I$PICOLIBC_INSTALL/include"
-CFLAGS="$CFLAGS -I./src/lib"
-CFLAGS="$CFLAGS -I./src"
-CFLAGS="$CFLAGS -Wall -Wextra"
-
-LDFLAGS="-m elf_i386 -nostdlib"
-LDFLAGS="$LDFLAGS -L$PICOLIBC_INSTALL/lib"
-
-echo "=== Building kernel with picolibc ==="
-
-# Build boot assembly
-echo "Assembling boot code..."
-nasm -f elf32 src/boot/kernel.asm -o "$BUILD_DIR/kasm.o"
-
-# Build duktape with picolibc
-echo "Building Duktape..."
-gcc $CFLAGS -c src/lib/duktape.c -o "$BUILD_DIR/duktape.o"
-
-# Build kernel
-echo "Building kernel..."
-gcc $CFLAGS -c src/kernel/kernel.c -o "$BUILD_DIR/kc.o"
-
-# Link everything together
-echo "Linking kernel..."
-ld $LDFLAGS -T src/link.ld -o "$OUT_DIR/kernel" \
-    "$BUILD_DIR/kasm.o" \
-    "$BUILD_DIR/kc.o" \
-    "$BUILD_DIR/duktape.o" \
-    -lc
-
-echo ""
-echo "=== Build complete! ==="
-echo "Kernel binary: $OUT_DIR/kernel"
-echo ""
-echo "To run the kernel:"
-echo "  qemu-system-i386 -kernel $OUT_DIR/kernel"

scripts/build.sh

@@ -0,0 +1,2 @@
+docker build -t lints-dev -f docker/Dockerfile .
+docker run -it --rm -v "$(pwd)":/workspace -w /workspace lints-dev

scripts/run-kernel.sh

@@ -0,0 +1,3 @@
+./scripts/build.sh
+
+qemu-system-i386 -kernel "build/out/kernel"