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I had the darndest time getting MPICH to work on Linux because they use command
line arguments, which is not standard in Fortran. I do not yet know how much
this effects other operating systems with one f90. Under the default build of
MPICH 1.1.2, using g77 as the Fortran compiler, it generates routines for
iargc and getarg which work when g77 compiles the application, but not with
any of the Fortran 90 compilers. Finally I did a build with -f95nag (as well
as --disable-c++ -opt=-g -noromio -rsh=ssh), with /usr/local/bin/f95 being
the NAG compiler. This does not create the routines, which gives unresolved
references, but lets us add them in with the application. (Also it creates
some bad PARAMETER statements in mpif.h, which can be commented out.) The
farg*.f files contain the iargc and getarg routines for various compilers.
I should also note that using mpif77 or mpif90 for the compile or link doesn't
work, either.
William F. Mitchell, October 5, 1999
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