[Bug libfortran/55601] libgfortran build fails with --disable-libquadmath

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55601

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-12-05 08:52:25 UTC ---
If you don't want libgfortran to use libquadmath, you should also disable the
READ(16) support in the frontend by configuring with:

  --disable-libquadmath-support


I think the proper solution for this PR is to add a libgfortran configure check
which fails with:

  "Cannot find libquadmath but the compiler has been compiled with REAL(16)
   support. Ensure that libquadmath is available or configure GCC with
   --disable-libquadmath-support"