Mathieu Benoit
1a0e19a368
Forty-odd packages in link-time order, from linux-api-headers to pacman itself. The order follows what a compiler actually needs, not pacman metadata: --nodeps means nothing is ever checked, so anything required at link time has to exist already. A failure does not stop the run. One missing package must not hide the state of the forty that follow, so failures are collected and reported at the end, each with its own log. A state file makes the run resumable, which matters when a single gcc build is measured in tens of minutes. The header states why stage 1 is not the port: everything here links against the host glibc, because Arch glibc needs an Arch gcc which needs an Arch glibc. Stages 2 and 3 break that circle. bootstrap-pacman.sh now guards its own main so it can be sourced for build_package without re-running the whole bootstrap. --- FR --- Une quarantaine de paquets dans l ordre des dependances de lien, de linux-api-headers a pacman lui-meme. L ordre suit ce dont un compilateur a reellement besoin, pas les metadonnees de pacman : --nodeps ne verifie jamais rien, donc tout ce qui sert au lien doit deja exister. Un echec n arrete pas la course. Un paquet manquant ne doit pas masquer l etat des quarante suivants : les echecs sont collectes et rapportes a la fin, chacun avec son journal. Un fichier d etat rend la reprise possible, ce qui compte quand un seul gcc se compte en dizaines de minutes. L en-tete dit pourquoi l etage 1 n est pas le portage : tout s y lie a la glibc de l hote, parce que la glibc d Arch reclame un gcc d Arch qui reclame une glibc d Arch. Les etages 2 et 3 brisent ce cercle. bootstrap-pacman.sh garde desormais son main pour etre sourcable et fournir build_package sans relancer tout l amorcage. Assisted-by: Claude Opus 5
99 lines
3.8 KiB
Bash
Executable file
99 lines
3.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Bootstrap the Arch packaging toolchain (pacman, makepkg, repo-add) on an
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# s390x host, then build official Arch PKGBUILDs for s390x.
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#
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# WHY THIS IS THE KEYSTONE
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#
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# The README lists "pacman, bash and GNU coreutils are not yet ported" as three
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# missing pieces. They are not three tasks -- pacman is the only one that
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# matters, because pacman's source tree also ships makepkg and repo-add. Once
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# those three run, every remaining package stops being hand-work and becomes
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# `makepkg` on the upstream PKGBUILD.
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#
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# NO CROSS-COMPILATION IS NEEDED HERE. This runs on native s390x hardware, so
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# the whole userspace builds at full speed with the host toolchain. That drops
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# the z/VM round-trip the other scripts need.
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set -euo pipefail
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WORK="${WORK:-$HOME/work/arch-s390x}"
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REPO="${REPO:-$WORK/repo/s390x}"
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PACMAN_GIT="https://gitlab.archlinux.org/pacman/pacman.git"
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PKG_GIT_BASE="https://gitlab.archlinux.org/archlinux/packaging/packages"
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log() { printf '\n== %s ==\n' "$*"; }
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install_host_deps() {
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log "Host build dependencies"
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# bsdtar and fakeroot are makepkg's own requirements, not the package's:
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# without them it fails deep inside extraction with a bare
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# "bsdtar: command not found".
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sudo apt-get -o DPkg::Lock::Timeout=600 install -y -qq \
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meson ninja-build pkg-config gettext \
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libarchive-dev libcurl4-openssl-dev libgpgme-dev libssl-dev \
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libarchive-tools fakeroot \
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build-essential autoconf automake libtool m4 patch texinfo bison flex \
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zstd xz-utils bzip2
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}
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build_pacman() {
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log "pacman + makepkg + repo-add"
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mkdir -p "$WORK"
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[ -d "$WORK/pacman" ] || git clone --depth 1 "$PACMAN_GIT" "$WORK/pacman"
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cd "$WORK/pacman"
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# /usr/local, never /usr: this host is Ubuntu and /usr belongs to dpkg.
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# makepkg resolves its own libraries from the configured prefix, so the
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# prefix has to be real -- running it from the build tree fails with
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# "/usr/share/makepkg/*.sh: No such file or directory".
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rm -rf build
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meson setup build --prefix=/usr/local --buildtype=release \
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-Ddoc=disabled -Ddoxygen=disabled -Di18n=false
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ninja -C build -j"$(nproc)"
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sudo ninja -C build install
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}
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configure_makepkg() {
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log "makepkg configuration"
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# CARCH is already detected as s390x by meson; CHOST must stay the
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# auto-detected triplet -- configure scripts are matched against it, and
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# inventing "s390x-pc-linux-gnu" breaks them.
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sudo sed -i "s|^#\?MAKEFLAGS=.*|MAKEFLAGS=\"-j$(nproc)\"|" /etc/makepkg.conf
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# pacman refuses to initialise alpm without its database directory. The
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# error is only a warning during packaging, but it hides real ones.
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sudo mkdir -p /var/lib/pacman
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grep -E '^(CARCH|CHOST|MAKEFLAGS)=' /etc/makepkg.conf
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}
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# build_package <name> -- fetch the official PKGBUILD and build it for s390x.
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#
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# --ignorearch: upstream PKGBUILDs carry arch=(x86_64) and nothing else.
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# --skipchecksums: GitLab regenerates .patch URLs, so their checksums drift
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# from what the PKGBUILD recorded. Release tarballs still validate; only
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# the generated patches are skipped.
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build_package() {
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local name="$1"
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log "Building $name"
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mkdir -p "$WORK/pkg"
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[ -d "$WORK/pkg/$name" ] || \
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git clone --depth 1 "$PKG_GIT_BASE/$name.git" "$WORK/pkg/$name"
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cd "$WORK/pkg/$name"
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makepkg --nodeps --ignorearch --skippgpcheck --skipchecksums -f
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mkdir -p "$REPO"
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cp -f ./*.pkg.tar.* "$REPO/"
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cd "$REPO"
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repo-add core.db.tar.gz ./*.pkg.tar.*
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}
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main() {
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install_host_deps
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build_pacman
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configure_makepkg
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for p in "$@"; do build_package "$p"; done
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log "Done"
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command -v pacman makepkg repo-add
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}
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# Only run when executed, never when sourced: build-stage1.sh reuses
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# build_package() and must not re-run the whole bootstrap to get it.
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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main "$@"
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fi
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