No description
Mathieu Benoit
dcaa55b19a
--nodeps means every makedepend must be named here by hand. Seven builds stopped on one, each naming a different tool: itstool, convert, fig2dev, asciidoctor, libnsl, python -m build, libbpf, history. The list was also a lie by omission. libreadline-dev, libncurses-dev, zlib1g-dev, python3-dev, doxygen, xsltproc, docbook-xsl, elinks and libcap2-bin were on this VM by hand and never declared. They made the builds pass here and would fail on a fresh Ubuntu, for reasons that have nothing to do with s390x. history.pc is generated rather than copied: our own readline package ships a correct one, but its libdir names /usr/lib, which on a multiarch host holds no libhistory. The .pc has to describe THIS host. Three hooks for what apt cannot buy. systemd asks for an EFI arch s390x does not have -- and says "python3 is missing modules: elftools", which sends you to apt for four lines before admitting the real reason. --- FR --- --nodeps veut dire que chaque makedepend doit être nommé ici à la main. Sept compilations se sont arrêtées sur l'une d'elles, chacune désignant un outil différent : itstool, convert, fig2dev, asciidoctor, libnsl, python -m build, libbpf, history. La liste mentait aussi par omission. libreadline-dev, libncurses-dev, zlib1g-dev, python3-dev, doxygen, xsltproc, docbook-xsl, elinks et libcap2-bin étaient posés à la main sur cette VM, jamais déclarés. Ils faisaient passer les compilations ici et auraient échoué sur un Ubuntu neuf, pour des raisons étrangères à s390x. history.pc est généré et non copié : notre propre paquet readline en livre un correct, mais son libdir nomme /usr/lib, qui sur un hôte multiarch ne contient aucun libhistory. Le .pc doit décrire CET hôte-ci. Trois crochets pour ce qu'apt n'achète pas. systemd réclame une architecture EFI que s390x n'a pas — et annonce « python3 is missing modules: elftools », ce qui envoie chez apt pour quatre lignes avant d'avouer la vraie raison. Assisted-by: Claude Opus 5 |
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| .github/workflows | ||
| arch-kernel | ||
| boot | ||
| patches | ||
| scripts | ||
| .env.example | ||
| .gitignore | ||
| CODEOWNERS | ||
| Containerfile | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| TODO.md | ||
Arch Linux s390x
A port of Arch Linux to IBM s390x mainframe architecture with systemd support.
Boots a full Arch Linux system on IBM mainframes (or QEMU s390x emulation) using a hybrid build: cross-compilation for the kernel, native s390x compilation on z/VM for userspace.
Quick Start
make container # build dev container (first time)
cp .env.example .env # configure z/VM access
make all # build kernel + initramfs + systemd
make test-systemd # boot it
What Works
- Arch Linux kernel 6.18.6-arch1 with Arch patches, cross-compiled
- Initramfs via modified mkinitcpio
- Static busybox built natively on z/VM, 2.3MB
- Root filesystem with ext4, switch_root to real rootfs
- Systemd as PID 1
Pacman, bash, and GNU coreutils are not yet ported.
Build System
The build uses two tiers:
Cross-compilation (x86_64 host): Kernel is built in a Fedora 43 container with s390x-linux-gnu-gcc. Initramfs is generated with a patched mkinitcpio that handles cross-architecture binary injection.
Native compilation (s390x z/VM): Busybox and systemd must be built on real s390x hardware. The z/VM system runs RHEL 9.6 with GCC 11.5.0. Scripts handle SSH deployment and retrieval automatically via .env configuration.