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[FIX] host-extracted sources linked to paths the chroot cannot see

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nss failed with

  /build/nss/PKGBUILD: line 55: ../certdata2pem.py: No such file or directory

on a file that was plainly there. makepkg links a PKGBUILD local source files
into srcdir, and having extracted on the HOST it wrote the host absolute path.
Inside the chroot that path does not exist; only /build does.

No such file or directory for an executable is usually its interpreter, which
sent the first guess to the shebang -- #!/usr/bin/python, with python, python3
and python3.14 all present. It was the script itself, reached through a link to
nowhere.

Only links under the work directory are repointed: a link to anywhere else was
not made by this mechanism and is not ours to redirect.

--- FR ---

nss echouait sur

  /build/nss/PKGBUILD: line 55: ../certdata2pem.py: No such file or directory

pour un fichier bien present. makepkg lie les sources locales d un PKGBUILD dans
srcdir, et ayant extrait sur l HOTE il a ecrit le chemin absolu de l hote. Dans le
chroot ce chemin n existe pas ; seul /build existe.

No such file or directory pour un executable designe d ordinaire son interprete,
ce qui a envoye la premiere hypothese vers le shebang -- #!/usr/bin/python, avec
python, python3 et python3.14 tous presents. C etait le script lui-meme, atteint
par un lien vers nulle part.

Seuls les liens sous le repertoire de travail sont rediriges : un lien ailleurs n a
pas ete cree par ce mecanisme et ne nous appartient pas.

Assisted-by: Claude Opus 5
This commit is contained in:
Mathieu Benoit 2026-08-23 23:02:24 -04:00
parent 41f0bc4897
commit 29da076277
1 changed files with 26 additions and 0 deletions
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26
scripts/build-stage2.sh
View file

@ -962,6 +962,32 @@ stage2_build() {
if host_extract "$name"; then
echo " extracting on the host (chroot bsdtar not usable yet)"
( cd "$dir" && LC_ALL=C.UTF-8 makepkg $mkflags -o -C -f ) || return 1
# Symlinks that point out of the chroot.
#
# nss failed with
#
# /build/nss/PKGBUILD: line 55: ../certdata2pem.py:
# No such file or directory
#
# on a file that was plainly there. makepkg links a PKGBUILD's local
# source files into srcdir, and having extracted on the HOST it wrote the
# host's absolute path -- $WORK/pkg/nss/certdata2pem.py. Inside the
# chroot that path does not exist; only /build does. "No such file or
# directory" for an executable is usually its interpreter, which sent the
# first guess to the shebang; here it was the script itself, reached
# through a link to nowhere.
#
# Rewritten to the same file as the chroot sees it. Only links under
# $WORK/pkg are touched -- a link to anywhere else was not made by this
# mechanism and is not ours to redirect.
local _l _t _n=0
while IFS= read -r _l; do
_t=$(readlink "$_l")
case "$_t" in
"$WORK/pkg"/*) ln -sfn "/build/${_t#"$WORK/pkg/"}" "$_l"; _n=$((_n + 1)) ;;
esac
done < <(find "$dir/src" -maxdepth 2 -type l 2>/dev/null)
[ "$_n" -gt 0 ] && printf ' %s source link(s) repointed at /build\n' "$_n"
# -e: build in the tree already there. -C would wipe it again.
in_chroot "cd /build/$name && makepkg $mkflags -e -f" || return 1
else