Sebastiaan de Schaetzen
bbd7d3725b
Provides a reproducible Debian-based build environment with: - Clang + LLD for cross-compilation to i386-elf targets - GRUB 2 tools (grub-pc-bin, xorriso, mtools) for bootable ISO and floppy image generation - QEMU (i386) for integration test execution - CMake + Ninja for the build system The Dockerfile includes a self-test that verifies Clang + lld can produce a valid ELF 32-bit i386 binary before the image is accepted.
44 lines
1.3 KiB
Docker
44 lines
1.3 KiB
Docker
# ClaudeOS build environment
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#
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# Provides everything needed to build and test a bare-metal i386 kernel:
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# - Clang + LLD for cross-compilation to i386-elf
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# - GRUB 2 tools for generating bootable ISO and floppy images
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# - QEMU (i386) for running integration tests
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# - CMake + Ninja for the build system
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# - xorriso and mtools used internally by grub-mkrescue / grub-mkimage
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FROM debian:bookworm-slim
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ENV DEBIAN_FRONTEND=noninteractive
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RUN apt-get update && apt-get install -y --no-install-recommends \
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# Core build tools
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clang \
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lld \
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cmake \
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ninja-build \
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make \
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git \
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# GRUB image generation
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grub-pc-bin \
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grub-common \
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xorriso \
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mtools \
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# QEMU for running the OS
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qemu-system-x86 \
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# Handy utilities
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file \
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ca-certificates \
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&& rm -rf /var/lib/apt/lists/*
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# Verify the cross-compilation toolchain can produce an i386-elf binary.
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RUN echo 'void _start(void){for(;;)__asm__("hlt");}' > /tmp/test.c \
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&& clang -target i386-elf -m32 -march=i386 -ffreestanding -fno-stack-protector \
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-nostdlib -fuse-ld=lld -Wl,-e,_start \
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/tmp/test.c -o /tmp/test.elf \
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&& file /tmp/test.elf | grep -q "ELF 32-bit.*80386" \
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&& echo "Toolchain OK" \
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&& rm /tmp/test.c /tmp/test.elf
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WORKDIR /workspaces/claude-os
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