CODEWITHSUNDEEP
fortrangfortranmpichgcc4
DrLou
DrLou

Reputation: 649

cannot configure MPICH. The selected Fortran 90 compiler gfortran does not work with the selected Fortran 77 compiler gfortran

Experts: Am trying to configure MPICH-3.2b1 with this command:

./configure --prefix=/usr/local/mpi64-32-mpich CFLAGS="-m64" FFLAGS="-m64" CC=gcc FC=gfortran

...

configure: error: The selected Fortran 90 compiler gfortran does not work with the selected Fortran 77 compiler gfortran. Use the environment variables FC and F77 respectively to select compatible Fortran compilers. The check here tests to see if a main program compiled with the Fortran 90 compiler can link with a subroutine compiled with the Fortran 77 compiler.

I've tried various invocations fo FC and F77 variables. Is this a deficiency in our (custom) build of gcc/gfortran 4.8?

Upvotes: 0

Views: 1634

Answers (1)

Rob Latham
Rob Latham

Reputation: 5223

autoconf-generated configure scripts (which MPICH uses) record a ton of information in config.log. Whenver configure scripts behave in a strange way, take a look at config.log for a clue.

One needs to be a bit careful here, as config.log will report many failures when it checks, for example, if one of your system calls behaves like an HP-UX 10.4 version (it won't).

but, look for 'gfortran' and other context so you can find the test. Sometimes this type of error is due to a missing library or header file: perhaps you simply need to update an environment variable.

Upvotes: 1

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