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[FIX] gcc: do not rewrite the libgccjit language list

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The PKGBUILD configures gcc twice: once for the compiler, once for
libgccjit with --enable-languages=jit. The hook rewrote every
occurrence, so the second tree built a compiler instead of a library
and package() died on

  cp: cannot stat 'gcc/libgccjit.so*': No such file or directory

after forty minutes of compiling -- the worst kind of failure, at the
very end, from a patch that looked right.

The sed now skips any line containing jit. A patch that rewrites "every
occurrence" of anything in a PKGBUILD should be suspected by default:
these files configure the same source tree several times, for different
outputs.

--- FR ---

Le PKGBUILD configure gcc deux fois : une fois pour le compilateur, une
fois pour libgccjit avec --enable-languages=jit. Le crochet reecrivait
toutes les occurrences, si bien que le second arbre batissait un
compilateur au lieu d une bibliotheque, et package() mourait sur

  cp: cannot stat 'gcc/libgccjit.so*': No such file or directory

apres quarante minutes de compilation -- le pire genre d echec, tout a
la fin, venu d un correctif qui semblait juste.

Le sed ecarte desormais toute ligne contenant jit. Un correctif qui
reecrit « toutes les occurrences » de quoi que ce soit dans un PKGBUILD
doit etre suspecte d office : ces fichiers configurent plusieurs fois le
meme arbre source, pour des sorties differentes.

Assisted-by: Claude Opus 5
This commit is contained in:
Mathieu Benoit 2026-08-16 01:18:45 -04:00
parent a61890d83a
commit 63be2a7990
1 changed files with 7 additions and 1 deletions
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8
patches/pkgbuild/gcc.sh
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@ -26,7 +26,13 @@
# removals are permanent -- they are architectural.
set -euo pipefail
sed -i 's/^\(\s*--enable-languages=\).*\\$/\1c,c++,fortran,lto,objc,obj-c++ \\/' PKGBUILD
# Only the MAIN build. The PKGBUILD configures gcc twice: once for the
# compiler, once for libgccjit with --enable-languages=jit. Rewriting
# every occurrence clobbered the second one, so the jit tree built a
# compiler instead of a library and package() died on
# cp: cannot stat 'gcc/libgccjit.so*': No such file or directory
# after forty minutes of compiling. Match the language list, never 'jit'.
sed -i '/--enable-languages=jit/!s/^\(\s*--enable-languages=\).*\\$/\1c,c++,fortran,lto,objc,obj-c++ \\/' PKGBUILD
if grep -qE 'enable-languages=[^ ]*(ada|,d,|m2|cobol)' PKGBUILD; then
echo "gcc: a self-hosted front end is still enabled" >&2; exit 1
fi