Fortran compiler blacklist

[Patrick Welche]

The attached patch adds a white-space separated list of Fortran compilers
whose existence should be ignored to AC_PROG_{FC,F77}.
(There may be better ways of implementing this!)

The problem I encountered was that the first available compiler on
the checklist was unable to compile a particular program. The
current options to work around this are:

- look for another compiler on the system and set FC
- add a list of compilers to try without the problematic one as the first
  argument to AC_PROG_FC

I was looking for an option of the form "I don't know what other compilers
are on this system, I just know that foo95 doesn't work in this case".

If this is deemed to be a good idea, would a --with{,out}-fortran-compilers
option by desirable to manipulate arguments 1 and 3 to AC_PROG_FC more
easily for a configure user?

Cheers,

Patrick

0001-fortran.m4-add-list-of-Fortran-compilers-to-ignore-a.patch
Description: Text document