[cmake-developers] [CMake 0014872]: FindMPI.cmake finds MPI of different compiler

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=14872 
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Reported By:                Melven Roehrig-Zoellner
Assigned To:                
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Project:                    CMake
Issue ID:                   14872
Category:                   CMake
Reproducibility:            always
Severity:                   tweak
Priority:                   low
Status:                     new
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Date Submitted:             2014-04-10 21:23 CEST
Last Modified:              2014-04-10 21:23 CEST
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Summary:                    FindMPI.cmake finds MPI of different compiler
Description: 
On the machine I'm using here there are multiple compilers and MPI variants in
the PATH:
More precisely ifort, gfortran and pgf90 in the PATH and each of them brings
their own MPI wrappers (one could argue that this is already a bug of the
system, but I'm not the admin...).
So without setting any additional environment-variables, cmake detects ifort as
Fortran compiler and the MPI-wrapper mpif90 from PGI. As a result one obtains
possibly strange compiler errors during make.
It would be helpful to get at least an error from cmake if the compiler ID (or
version) of MPI_Fortran_COMPILER and CMAKE_Fortran_COMPILER differ...

Most probably the same effects could also occur for C / C ++, but I have not
tested other languages than Fortran.

Steps to Reproduce: 
Install compilers from different vendors and a specific MPI variant for each
them. Then put all compilers and at least one MPI variant in the path.
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Issue History 
Date Modified    Username       Field                    Change               
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2014-04-10 21:23 Melven Roehrig-ZoellnerNew Issue                               
    
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