No description
Mathieu Benoit
bda5fe67c5
The repository already knew four: pkgname, the build block, the _pick lines, the explicit make targets. There is a fifth, and it is the only one that fails silently -- the depends= array of a DIFFERENT sub-package. --nodeps means makepkg never checks, so gcc-libs built, passed, and went into the repository declaring a dependency on libhwasan, which this architecture never produces. Nothing said a word. pacman did, the first time anything tried to install it: :: unable to satisfy dependency 'libhwasan' required by gcc-libs This was already paid for once: an earlier pass hit it with libquadmath and pruned that one name by hand. libhwasan joined the drop set afterwards and the pruning was not extended. Pruning one name at a time was the bug. The set that decides what is not built now also decides what is not depended on, and an assertion refuses to let the two drift again. --- FR --- Le dépôt en connaissait déjà quatre : pkgname, le bloc de build, les lignes _pick, les cibles make explicites. Il y en a un cinquième, et c'est le seul qui échoue en silence — le tableau depends= d'un AUTRE sous-paquet. --nodeps veut dire que makepkg ne vérifie jamais : gcc-libs s'est construit, a été accepté, et est entré dans le dépôt en déclarant une dépendance envers libhwasan, que cette architecture ne produit jamais. Rien n'a bronché. pacman, si, à la première tentative d'installation : :: unable to satisfy dependency 'libhwasan' required by gcc-libs C'était déjà payé une fois : un passage antérieur avait rencontré le piège avec libquadmath et élagué ce seul nom à la main. libhwasan a rejoint la liste des retraits ensuite, sans que l'élagage suive. Élaguer nom par nom était le vrai défaut. L'ensemble qui décide de ce qui n'est pas construit décide désormais aussi de ce dont on ne dépend pas, et une assertion interdit aux deux de diverger. 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.