72 lines
3.3 KiB
Bash
72 lines
3.3 KiB
Bash
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#!/usr/bin/env bash
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# libarchive: no xar during the bootstrap. STAGE 1 ONLY.
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#
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# THE CYCLE, exactly as it presented itself. Stage 2 reached its very first
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# packaging step and stopped on
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#
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# bsdtar: error while loading shared libraries: libicuuc.so.76
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# ==> ERROR: Failed to create package file.
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#
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# after libxml2 had compiled and installed perfectly. The chain:
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#
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# bsdtar -> libarchive.so.13 -> libxml2.so.16 -> libicuuc.so.76
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#
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# The libxml2 in the chroot is our own stage-1 build, and stage 1 builds
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# against the HOST, whose ICU is 76. Our icu package ships 78. So bsdtar
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# cannot start -- and bsdtar is what makepkg uses to write the package. The
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# package that would fix it is the one being built. Nothing can come out of
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# the chroot until this is broken from outside.
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#
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# WHY NOT SUPPLY libicuuc.so.76. Copying the host's ICU into the chroot is the
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# obvious move and it is the wrong one: it puts untracked host binaries in
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# /usr/lib, which is precisely what test-chroot.sh's ARTEFACT check exists to
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# catch. A symlink to 78 does not work either -- ICU version-suffixes every
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# symbol, so libicuuc.so.78 does not define u_strlen_76.
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#
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# THE ROOT is that libarchive links libxml2 at all. It wants it for the xar
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# format, which is an Apple installer container. Nothing in this bootstrap
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# reads one: makepkg writes .pkg.tar.gz, pacman reads it. Dropping xar removes
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# the entire ICU chain rather than papering over its version.
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#
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# STAGE 1 ONLY -- build-stage2.sh lists libarchive in STAGE2_SKIP_HOOKS. Stage
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# 2 builds it as Arch does, with xar, against our own libxml2 and icu, where
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# the versions agree. The divergence lives exactly as long as the cycle does.
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#
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# BOTH depends ARRAYS. libxml2 is declared twice: once at the top and once as
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# libxml2.so in the depends+= inside package(). Removing only the visible one
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# leaves the package uninstallable for a reason the diff appears to fix -- the
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# fifth place, and the one that has cost the most time in this port.
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set -euo pipefail
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python3 - <<'ZZPY'
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import io, re
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s = io.open("PKGBUILD", encoding="utf-8").read()
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# ./configure: refuse xar outright. libarchive probes for BOTH libxml2 and
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# expat and uses whichever it finds, so declining only one leaves the other
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# to reintroduce the dependency the day the host installs it.
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old = " --without-nettle \\\n"
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assert s.count(old) == 1, "libarchive: --without-nettle is not where expected"
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s = s.replace(old, old + " --without-xml2 \\\n --without-expat \\\n", 1)
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# depends=(...): the top-level array.
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old = " 'libxml2'\n"
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assert s.count(old) == 1, "libarchive: 'libxml2' not in depends as expected"
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s = s.replace(old, "", 1)
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# depends+=(...) inside package(): the soname form.
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old = " 'libxml2.so'\n"
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assert s.count(old) == 1, "libarchive: 'libxml2.so' not in package() depends"
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s = s.replace(old, "", 1)
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io.open("PKGBUILD", "w", encoding="utf-8").write(s)
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ZZPY
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grep -q -- '--without-xml2' PKGBUILD || { echo "libarchive: xar not disabled" >&2; exit 1; }
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# Nothing named libxml2 may remain in ANY depends array -- checked by counting
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# rather than by eye, because there were two and both looked like the only one.
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if grep -nE "^\s*'?libxml2" PKGBUILD | grep -q .; then
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echo "libarchive: a libxml2 dependency survived:" >&2
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grep -nE "^\s*'?libxml2" PKGBUILD >&2
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exit 1
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fi
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echo "libarchive: xar disabled, libxml2 dropped from both depends arrays"
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