46 lines
2.4 KiB
Bash
46 lines
2.4 KiB
Bash
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#!/usr/bin/env bash
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# readline: its .pc file requires a module nothing in the repository provides.
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#
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# Package 'termcap', required by 'readline', not found
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#
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# readline's configure writes `Requires.private: termcap` into readline.pc,
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# because that is the historical name of the terminal library it links. Our
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# ncurses package ships tinfo.pc and ncurses.pc -- there is no termcap.pc, and
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# nothing else in the repository supplies one.
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#
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# Nothing fails at build time. The .pc is data, and pkg-config only follows
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# Requires.private when a CONSUMER asks. The first consumer to ask was libxml2,
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# inside the stage-2 chroot, and it stopped at meson configure -- three
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# packages and one stage away from the cause.
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#
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# tinfo is the right name: it is what ncurses actually installs the terminfo
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# routines into (`--with-termlib`), and readline links -lncurses which pulls it.
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# This is the same substitution the host needed for history.pc, made for the
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# same reason, in the other direction: there the file was missing and had to be
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# generated, here it exists and names the wrong dependency.
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#
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# The package's .pc is patched in package(), after make install writes it, so
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# nothing in the build sees a different file than what ships.
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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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# AFTER make install, not at the top of package(). The first version anchored
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# on `package() {` and ran the sed before the file existed:
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# sed: can't read .../usr/lib/pkgconfig/readline.pc: No such file or directory
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m = re.search(r'^ make -C \$pkgname-\$_basever DESTDIR="\$pkgdir" install\n', s, re.M)
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assert m, "readline: the install line in package() is not in the expected form"
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fix = """ # readline.pc says `Requires.private: termcap`; this repository ships
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# tinfo.pc, not termcap.pc, so any consumer asking pkg-config about readline
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# fails on a module nobody provides.
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sed -i 's/^Requires.private: termcap$/Requires.private: tinfo/' \\
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"$pkgdir"/usr/lib/pkgconfig/readline.pc
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grep -q '^Requires.private: tinfo$' "$pkgdir"/usr/lib/pkgconfig/readline.pc
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"""
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s = s[:m.end()] + fix + s[m.end():]
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io.open("PKGBUILD", "w", encoding="utf-8").write(s)
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ZZPY
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grep -q 'Requires.private: tinfo' PKGBUILD || {
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echo "readline: the .pc substitution was not inserted" >&2; exit 1; }
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echo "readline: readline.pc now requires tinfo (termcap.pc does not exist here)"
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