48 lines
2.3 KiB
Bash
48 lines
2.3 KiB
Bash
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#!/usr/bin/env bash
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# groff: one decorative figure, and no netpbm to draw it.
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#
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# program 'xpmtoppm' is missing; can't generate doc/gnu.eps
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# make[2]: *** [Makefile:19801: doc/gnu.eps] Error 1
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#
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# xpmtoppm belongs to netpbm. What it produces is the GNU logo, as EPS, for
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# groff's own manual -- and getting it would mean packaging netpbm and the image
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# libraries under it (libjpeg-turbo, libpng, libtiff, jbigkit), none of which
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# anything else in this bootstrap wants.
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#
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# NO CONFIGURE SWITCH EXISTS: groff's configure has neither --without-doc nor
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# --disable-doc, so there was nothing to turn off. Adding an invented flag would
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# have been worse than useless -- autoconf merely warns about options it does not
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# know, the build would have failed identically, and the hook's own check would
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# have passed.
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#
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# The Makefile is generated, so it is edited after configure and before make. The
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# variable is emptied rather than the rule patched, because the INSTALL side is
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# already tolerant:
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#
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# if test -f "$$d/gnu.eps"; then ... fi
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#
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# so with nothing built, nothing is installed and nothing complains. One line,
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# and the only one whose absence the rest of the Makefile already handles.
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set -euo pipefail
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python3 - <<'ZZPY'
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import io, re
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lines = io.open("PKGBUILD", encoding="utf-8").read().split("\n")
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mk = [i for i, l in enumerate(lines) if re.match(r"^[ \t]*make[ \t]*$", l)]
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assert len(mk) >= 1, "groff: no bare `make` line found in build()"
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i = mk[0]
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ind = re.match(r"^[ \t]*", lines[i]).group(0)
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lines[i:i] = [
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ind + "# doc/gnu.eps needs xpmtoppm from netpbm, which this port does not",
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ind + "# package. The install side already skips the file when it is absent.",
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ind + 'sed -i "s|^DOC_GNU_EPS = doc/gnu.eps$|DOC_GNU_EPS =|" Makefile',
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ind + 'grep -q "^DOC_GNU_EPS =$" Makefile',
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]
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io.open("PKGBUILD", "w", encoding="utf-8").write("\n".join(lines))
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ZZPY
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grep -q "DOC_GNU_EPS" PKGBUILD || { echo "groff: the figure was not dropped" >&2; exit 1; }
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# The grep inside build() is the real check: it runs against the generated
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# Makefile and fails the build if the variable was not what this hook expects.
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grep -q 'grep -q "\^DOC_GNU_EPS =\$" Makefile' PKGBUILD || {
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echo "groff: the in-build verification is missing" >&2; exit 1; }
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echo "groff: GNU logo figure dropped (no netpbm)"
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