43 lines
1.4 KiB
Docker
43 lines
1.4 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 --platform=linux/amd64 alpine:3.23
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RUN apk add --no-cache \
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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 \
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make \
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git \
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# GRUB image generation
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grub \
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grub-bios \
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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-i386 \
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# Handy utilities
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file \
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ca-certificates
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# Verify the cross-compilation toolchain can produce an i386-elf binary.
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# Compile and link separately so ld.lld is invoked directly, avoiding the
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# host gcc linker driver (which rejects -m32 on non-x86 hosts such as aarch64).
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RUN echo 'void _start(void){for(;;)__asm__("hlt");}' > /tmp/test.c \
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&& clang -v -target i386-elf -march=i386 -ffreestanding -fno-stack-protector \
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-c /tmp/test.c -o /tmp/test.o \
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&& ld.lld -m elf_i386 -e _start --nostdlib /tmp/test.o -o /tmp/test.elf \
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&& file /tmp/test.elf | grep -q "ELF 32-bit.*386" \
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&& echo "Toolchain OK" \
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&& rm /tmp/test.c /tmp/test.o /tmp/test.elf
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WORKDIR /workspaces/claude-os
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