Hideki Yamane dixit:
> Hookdir cannot satisfy its purpose - build with gcc, then check with clang,
> back to gcc, and use clang again... - if we choose using hookdir, we should
> add script to hookdir then remove it every time, it's not handy and doesn't
> encourage maintainers to check with clang.
It can…
I’m thinking of something like this (untested):
(cat >hookdir/D60clang; chmod +x hookdir/D60compiler) <<'EOF'
#!/bin/sh
set +e
# check whether we are asked to change the compiler
case $PBUILDER_COMPILER in
(clang|tcc)
replace_gcc=1
;;
(gcc-*)
replace_gcc=0
;;
(*)
exit 0
;;
esac
apt-get -y --force-yes --purge install "$PBUILDER_COMPILER" || {
echo >&2 "E: Installing the compiler '$PBUILDER_COMPILER' failed"
exit 1
}
test -x /usr/bin/"$PBUILDER_COMPILER" || {
echo >&2 "E: Package '$PBUILDER_COMPILER' does not contain compiler
driver?"
exit 1
}
newcc=/usr/bin/$PBUILDER_COMPILER
case $PBUILDER_COMPILER in
(clang)
newcxx=/usr/bin/clang++
;;
(tcc)
newcxx=/bin/false
;;
(gcc-*)
newcxx=/usr/bin/g++${PBUILDER_COMPILER#gcc}
;;
(*)
# cannot happen
exit 255
esac
if test 1 = $replace_gcc; then
e=0
oldcc=$(readlink /usr/bin/gcc) || e=1
oldcxx=$(readlink /usr/bin/g++) || e=1
case $oldcc in
(/usr/bin/gcc-*)
oldcc=${oldcc#/usr/bin/}
;;
(gcc-*)
;;
(*)
e=1
;
esac
case $oldcxx in
(/usr/bin/g++-*)
oldcxx=${oldcxx#/usr/bin/}
;;
(gcc-*)
;;
(*)
e=1
;
esac
if test 1 = $e; then
echo >&2 "E: Old compilers ('$oldcc', '$oldcxx') do not match
gcc-defaults"
exit 1
fi
rm -f /usr/bin/"$oldcc" /usr/bin/"$oldcxx"
ln -s "$newcc" /usr/bin/"$oldcc"
ln -s "$newcxx" /usr/bin/"$oldcxx"
fi
rm -f /usr/bin/gcc /usr/bin/g++
ln -s "$newcc" /usr/bin/gcc
ln -s "$newcxx" /usr/bin/g++
rm -f /usr/bin/cc /usr/bin/++
ln -s "$newcc" /usr/bin/cc
ln -s "$newcxx" /usr/bin/c++
exit 0
EOF
This would allow switching to any gcc version, tcc and clang;
adding pcc, TenDRA and other compilers is surely possible,
and this hook script is controlled by $PBUILDER_COMPILER which
you can just export before calling pbuilder/cowbuilder.
bye,
//mirabilos
--
<mirabilos> │ untested
<Natureshadow> │ tut natürlich
<Natureshadow> │ was auch sonst ...
<mirabilos> │ fijn ☺
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