[cmake-developers] [CMake 0012874]: Bug in FindMPI.cmake under Windows

Mantis Bug Tracker mantis at public.kitware.com
Sun Jan 15 14:43:41 EST 2012


The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=12874 
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Reported By:                Mourad
Assigned To:                
====================================================================== 
Project:                    CMake
Issue ID:                   12874
Category:                   Modules
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             2012-01-15 14:43 EST
Last Modified:              2012-01-15 14:43 EST
====================================================================== 
Summary:                    Bug in FindMPI.cmake under Windows
Description: 
I get a link problem when linking to MPI libraries found by FindMPI.cmake. The
error I get is :

LINK : fatal error LNK1104: cannot open file 'C:\Program
Files\MPICH2\lib\mpi.lib C:\Program Files\MPICH2\lib\cxx.lib'

The problem is caused by line 416 of FindMPI.cmake, a "patch" is also given
below.

Line 416 :

-          set(MPI_LIBRARIES_WORK "${MPI_LIBRARIES_WORK} ${MPI_LIB}")
+          set(MPI_LIBRARIES_WORK "${MPI_LIBRARIES_WORK};${MPI_LIB}")

Steps to Reproduce: 
Just try to build this empty main.cpp with the provided CMakeLists.txt

CMakeLists.txt :

cmake_minimum_required(VERSION 2.8)
project(test_mpi)
find_package(MPI)
add_executable(test_mpi main.cpp)
target_link_libraries(test_mpi ${MPI_LIBRARIES})

main.cpp :

int main()
{
  return 0;
}

Additional Information: 
MPI installed from
http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads
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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2012-01-15 14:43 Mourad         New Issue                                    
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