build: make sure we can overwrite config.{guess,sub}

Since ea7b8528 (#26422), autogen.sh overwrites the
build-aux/config.{guess, sub} files (installed there by autoreconf)
with the depends/config.{guess, sub} files if these are newer.

The autoreconf tool copies them from it's share/autoconf/build-aux/
directory. Specifically on NixOS, the share/autoconf/build-aux/
files are located in the nix-store and are read-only. autoreconf
preserves the read-only permissions when copying. Overwriting them
with our depends/config.{guess, sub} subsequently fails.

To make sure we can overwrite the files, we set write permissions to
the current user and group before overwriting. This fixes the problem
on NixOS.

fixes #27873: Can't copy to 'build-aux/config.guess' in autoconf.sh: Permission denied
This commit is contained in:
0xb10c 2023-06-13 14:33:58 +02:00
parent 8de9bb7a5a
commit fc6c17b838
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1 changed files with 4 additions and 0 deletions

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@ -16,10 +16,14 @@ command -v autoreconf >/dev/null || \
autoreconf --install --force --warnings=all
if expr "'$(build-aux/config.guess --timestamp)" \< "'$(depends/config.guess --timestamp)" > /dev/null; then
chmod ug+w build-aux/config.guess
chmod ug+w src/secp256k1/build-aux/config.guess
cp depends/config.guess build-aux
cp depends/config.guess src/secp256k1/build-aux
fi
if expr "'$(build-aux/config.sub --timestamp)" \< "'$(depends/config.sub --timestamp)" > /dev/null; then
chmod ug+w build-aux/config.sub
chmod ug+w src/secp256k1/build-aux/config.sub
cp depends/config.sub build-aux
cp depends/config.sub src/secp256k1/build-aux
fi