[issue41105] Add some extra content check in configure process for some empty header file who has been deprecated by glibc

[Andrei Kulakov]

Andrei Kulakov <andrei.avk at gmail.com> added the comment:

I think adding this code in the `configure` script may fix it:

as_ac_Header=`$as_echo "ac_cv_header_stropts.h" | $as_tr_sh`
ac_fn_c_check_header_mongrel "$LINENO" "stropts.h" "$as_ac_Header" "$ac_includes_default"
if eval test \"x\$"$as_ac_Header"\" = x"yes" && [ -s stropts.h ]; then :
  cat >>confdefs.h <<_ACEOF
#define `$as_echo "HAVE_stropts.h" | $as_tr_cpp` 1
_ACEOF
fi

here: https://github.com/akulakov/cpython/blob/8f24b7dbcbd83311dad510863d8cb41f0e91b464/configure#L8144

.. but I wasn't able to test it. I have a MacOS system and for me even with a non-empty stropts.h, configure does not pick it up.

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nosy: +andrei.avk

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<https://bugs.python.org/issue41105>
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