No description
Mathieu Benoit
115ea48fb4
gcc failed on what looked like a missing header:
/usr/include/strings.h:23:10: fatal error:
.../gcc-build/prev-gcc/include/stddef.h: No such file or directory
The file was PRESENT when the tree was inspected afterwards. It is not
missing: it is generated by a rule that another rule consumes without
declaring the dependency, and with MAKEFLAGS=-j16 sixteen jobs win that
race often enough to fail. Read as an absent header, it sends you
hunting through include paths for nothing -- and past a set of host
symlinks that were, this time, innocent.
The bound goes into build() inside the PKGBUILD. My first attempt
exported MAKEFLAGS from the hook, which cannot work: hooks run in their
own bash process and never reach makepkg. gcc is the only package here
that bootstraps itself three times, so the limit is local to it.
util-linux wanted libmagic; curl wanted patchelf. Both installed.
--- FR ---
gcc echouait sur ce qui ressemblait a un en-tete manquant :
/usr/include/strings.h:23:10: fatal error:
.../gcc-build/prev-gcc/include/stddef.h: No such file or directory
Le fichier etait PRESENT a l inspection de l arbre apres coup. Il ne
manque pas : il est produit par une regle qu une autre consomme sans
declarer la dependance, et avec MAKEFLAGS=-j16 seize taches gagnent
cette course assez souvent pour echouer. Lu comme un en-tete absent, il
fait fouiller les chemins d inclusion pour rien -- et soupconner des
liens symboliques d hote qui, cette fois, etaient innocents.
La borne va dans build(), a l interieur du PKGBUILD. Ma premiere
tentative exportait MAKEFLAGS depuis le crochet, ce qui ne peut pas
fonctionner : les crochets tournent dans leur propre processus bash et
n atteignent jamais makepkg. gcc est le seul paquet ici a s amorcer
trois fois, la limite lui reste donc locale.
util-linux reclamait libmagic ; curl reclamait patchelf. Poses tous deux.
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.