45 lines
2.2 KiB
Bash
45 lines
2.2 KiB
Bash
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#!/usr/bin/env bash
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# kbd: --disable-xkb. Found by nothing except the artefact.
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#
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# $ readelf -d usr/bin/loadkeys | grep NEEDED
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# (NEEDED) Shared library: [libxkbcommon.so.0]
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#
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# $ bsdtar -xOf kbd-*.pkg.tar.gz .PKGINFO | grep depend
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# depend = glibc
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# depend = gzip
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# depend = pam
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#
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# THE POINT OF THIS HOOK IS THE GAP BETWEEN THOSE TWO OUTPUTS. loadkeys needs
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# a library the package does not declare, so pacman's resolver is satisfied,
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# the rootfs installs cleanly, and loadkeys does not start. No dependency
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# check can see this -- not pacman's, and not the closure computation in this
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# port, because both read declarations. Only reading the binaries finds it.
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# scripts/test-chroot.sh grew a fourth check for exactly this class.
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#
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# WHERE IT CAME FROM, and it is worth admitting plainly: configure.ac:362
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#
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# AC_ARG_ENABLE([xkb], ... [default=auto])
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# AS_IF([test "x$USE_XKB" != xno],
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# [PKG_CHECK_MODULES(XKBCOMMON, xkbcommon, [USE_XKB=yes], [USE_XKB=no])])
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#
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# 'auto' again -- a default read from the build host. libxkbcommon-dev is on
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# this machine because it was added to install_host_deps FOR SYSTEMD. kbd, an
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# unrelated package built later, probed for it, found it, and silently linked
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# a library nothing in this port ships. One host package, one broken binary in
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# a different package, undeclared.
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#
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# Arch's kbd declares neither libxkbcommon in depends nor in makedepends, so
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# Arch's build chroot fails the same probe and Arch ships loadkeys without xkb
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# support. Disabling converges with Arch rather than diverging from it.
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#
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# The alternative was building libxkbcommon, and it is not close: measured, it
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# wants libxcb and xkeyboard-config behind it -- an X11 subtree, to generate
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# keymaps from an XKB database, on a mainframe with no graphics adapter.
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set -euo pipefail
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grep -q '^\s\+--disable-tests$' PKGBUILD || {
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echo "kbd: configure block not in the expected form" >&2; exit 1; }
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sed -i 's|^\(\s*\)--disable-tests$|\1--disable-tests \\\n\1--disable-xkb|' PKGBUILD
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[ "$(grep -c -- '--disable-xkb' PKGBUILD)" = 1 ] || {
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echo "kbd: --disable-xkb not inserted exactly once" >&2; exit 1; }
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echo "kbd: --disable-xkb (host libxkbcommon-dev, installed for systemd, leaked in)"
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