Re: mingw configure failure workaround

Peter Eisentraut wrote:

>Andrew Dunstan wrote:
>
>
>>Even if we don't do that can we *please* put in something that
>>detects the error, and tells the user what they will have to do to
>>fix it? Failing in a situation which we know we can detect and not
>>telling the user is intolerable, IMNSHO.
>>
>>
>
>Can you try a more recent version of autoconf and see if that behaves
>more tolerably?
>
>
>

tested with autoconf 2.59.

Unfortunately, it does not. It does try to copy if a link fails, unlike
what we have now:

ln -s $ac_rel_source $ac_dest 2>/dev/null ||
ln $srcdir/$ac_source $ac_dest 2>/dev/null ||
cp -p $srcdir/$ac_source $ac_dest ||

We don't have the last line, which must have been added since autoconf 2.53.

However, the problem is that the first line will actually appear to have
succeeded, i.e. MSys's ln is lying to us ;-(

This comes from the autoconf macro _AC_OUTPUT_LINKS defined in its
status.m4, which I guess is what we'd need to override (is that
possible?) if we are going to detect the failure, or maybe there's some
more magical way that in my unfamiliarity with autoconf I am unaware of.

cheers

andrew