[ET Trac] [Einstein Toolkit] #1382: Cactus should disable collapse sections automatically for C _and_ Fortran

[Einstein Toolkit]

#1382: Cactus should disable collapse sections automatically for C _and_ Fortran
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  Reporter:  knarf   |       Owner:                         
      Type:  defect  |      Status:  review                 
  Priority:  minor   |   Milestone:                         
 Component:  Cactus  |     Version:  ET_2013_05             
Resolution:          |    Keywords:  openmp flesh ET_2013_05
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Comment (by rhaas):

 I'd love to see this particular compile time error go away since it is
 rather unintuitive how to fix it.

 My recollection of why it is detected so late was that there is not way to
 detect the Fortran compiler version. We cannot even assume that Fortran
 files run through the "real" C preprocessor since Cactus supplies a mini-
 preprocessor in cpp.pl of its own. So I think the test right now works
 such that in a C source file we detect whether a faulty C compiler is
 found and if so, check that option that will cause them to be disabled in
 the fortran compiler are found. Writing this down, it should be possible
 to do this test in autoconf, should it? Of course we would still assume
 that a user uses "matching" C and Fortran compilers and not eg icc paired
 with gfortran.

 I believe that the patch as proposed would not be safe to apply, however
 that it could be turned into a autoconf test for the buggy compiler
 versions where we could indeed just look at the output of $F90 -V and base
 our decision on this.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1382#comment:2>
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