No description
Mathieu Benoit
4d8856b82d
Two failures three packages apart, both from the same place: our pacman package ships Arch's configuration verbatim, and Arch's is for x86_64. libxml2/meson.build:1:0: ERROR: Unable to detect linker for compiler `cc ... -march=x86-64 -mtune=generic ...` configure_chroot fixed CARCH, CHOST, MAKEFLAGS and OPTIONS and left CFLAGS alone. They are emptied rather than translated, because that is what stage 1 used -- the host's makepkg.conf has no CFLAGS line at all -- and 179 working packages are the evidence. s390x tuning is a deliberate later choice. Emptied by APPENDING, not commenting. The first attempt put a # in front of each assignment, and CFLAGS spans several lines: commenting the first left the continuations active and the quote unbalanced, so makepkg would not start. Then readline. Its .pc says `Requires.private: termcap` and this repository ships tinfo.pc; nothing provides termcap.pc. Nothing failed at build time -- a .pc is data, and pkg-config only follows Requires.private when a consumer asks. The first consumer to ask was libxml2, in the chroot, one stage and three packages from the cause. --- FR --- Deux échecs à trois paquets d'écart, de la même origine : notre paquet pacman livre la configuration d'Arch telle quelle, et celle d'Arch vise x86_64. libxml2/meson.build:1:0: ERROR: Unable to detect linker for compiler `cc ... -march=x86-64 -mtune=generic ...` configure_chroot corrigeait CARCH, CHOST, MAKEFLAGS et OPTIONS, et laissait CFLAGS. Ils sont vidés plutôt que traduits, car c'est ce qu'a utilisé l'étage 1 — le makepkg.conf de l'hôte n'a aucune ligne CFLAGS — et 179 paquets fonctionnels en sont la preuve. Le réglage pour s390x est un choix ultérieur délibéré. Vidés par AJOUT, non par commentaire. La première tentative mettait un # devant chaque affectation, et CFLAGS s'étend sur plusieurs lignes : commenter la première laissait les continuations actives et le guillemet déséquilibré, si bien que makepkg ne démarrait plus. Puis readline. Son .pc dit « Requires.private: termcap » alors que ce dépôt livre tinfo.pc ; personne ne fournit termcap.pc. Rien n'échouait à la compilation — un .pc est une donnée, et pkg-config ne suit Requires.private que si un consommateur le demande. Le premier à demander fut libxml2, dans le chroot, à une étape et trois paquets de la cause. 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.