61 lines
1.6 KiB
Bash
Executable File
61 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# Build one or more .subx files into an ELF binary, and package it up into a
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# bootable ISO image.
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#
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# Must be run on Linux.
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#
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# Dependencies:
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# apt install build-essential flex bison wget libelf-dev libssl-dev xorriso
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#
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# Based on http://minimal.linux-bg.org (GPLv3)
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set -e
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if [ $# -eq 0 ]
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then
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echo "Usage: `basename $0` file.subx ..."
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exit 1
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fi
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echo "=== constructing initramfs out of SubX binary"
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./ntranslate $*
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mv a.elf init
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chmod +x init
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rm -rf tmp/isoimage
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mkdir -p tmp/isoimage/boot
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echo init | cpio -R root:root -H newc -o | xz -9 --check=none > tmp/isoimage/boot/rootfs.xz
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if [ ! -d kernel ]
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then
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echo "=== cloning kernel"
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git clone https://github.com/akkartik/kernel
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fi
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echo "=== building kernel"
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( cd kernel
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make bzImage -j $(grep ^processor /proc/cpuinfo | wc -l)
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)
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cp kernel/arch/x86/boot/bzImage tmp/isoimage/boot/kernel.xz
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echo "=== downloading syslinux"
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test -f tmp/syslinux-6.03.tar.xz || wget https://kernel.org/pub/linux/utils/boot/syslinux/syslinux-6.03.tar.xz -P tmp
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echo "=== unpacking syslinux"
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tar xf tmp/syslinux-*.tar.xz -C tmp
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mkdir -p tmp/isoimage/boot/syslinux
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cp syslinux.cfg \
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tmp/syslinux-*/bios/core/isolinux.bin \
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tmp/syslinux-*/bios/com32/elflink/ldlinux/ldlinux.c32 \
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tmp/isoimage/boot/syslinux
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echo "=== generating ISO"
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# 'hybrid' ISO can also be used on non-optical media such as a disk or USB stick
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xorriso -as mkisofs \
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-isohybrid-mbr tmp/syslinux-*/bios/mbr/isohdpfx.bin \
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-c boot/syslinux/boot.cat \
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-b boot/syslinux/isolinux.bin \
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-no-emul-boot \
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-boot-load-size 4 \
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-boot-info-table \
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tmp/isoimage -o mu.iso
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