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configure: check explicitely for python dev (include) files

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As discussed at [1] we have received reports that the implicit check
using cffi.FFI().verify() is not reliable in all environments. Since
we already use pkg-config, and the python dev package should include a
.pc file [2], add an extra check using pkg-config.  On at least
Debian, we have to know which version of python dev files with are
looking for, so calculate that first.

[1]: id:87im1g35ey.fsf@tethera.netid:87im1g35ey.fsf@tethera.net,
[2]: checked on Debian and Fedora
This commit is contained in:
David Bremner 2021-10-07 08:59:06 -03:00
parent 3e2e724d53
commit 6e050de4c0
1 changed files with 17 additions and 1 deletions
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18
configure vendored
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@ -775,9 +775,25 @@ if [ $have_python -eq 1 ]; then
fi
fi
have_python3_dev=0
if [ $have_python3 -eq 1 ]; then
printf "Checking for python3 version ..."
python3_version=$("$python" -c 'import sysconfig; print(sysconfig.get_python_version());')
printf "(%s)\n" $python3_version
printf "Checking for python $python3_version development files..."
if pkg-config --exists "python-$python3_version"; then
have_python3_dev=1
printf "Yes.\n"
else
have_python3_dev=0
printf "No (will not install CFFI-based python bindings).\n"
fi
fi
have_python3_cffi=0
have_python3_pytest=0
if [ $have_python3 -eq 1 ]; then
if [ $have_python3_dev -eq 1 ]; then
printf "Checking for python3 cffi and setuptools... "
if "$python" -c 'import cffi,setuptools; cffi.FFI().verify()' >/dev/null 2>&1; then
printf "Yes.\n"