[CMake] FindMPI.cmake and MS-MPI

[Andrew Maclean]

Re-sending because David in no longer at Kitware.

I downloaded and installed MS-MPI from
http://www.microsoft.com/en-us/download/details.aspx?id=44990

This implementation does not work with FindMPI.cmake.

The includes and libs are found in:
C:/Program Files (x86)/Microsoft SDKs/MPI/
and mpiexec.exe is in: C:/Program Files/Microsoft MPI/Bin/

I had to do the following changes to get it working. Perhaps you would like
to edit FIndMPI.cmake to incorporate these changes:
----------
# Require MPI for this project:
if(WIN32)
  #This is for finding MS-MPI.
  #set(_MPI_PREFIX_PATH)
  #list(APPEND _MPI_PREFIX_PATH
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MPI;Path]/..")
  set(MPIEXEC "C:/Program Files/Microsoft MPI/Bin/mpiexec.exe")
  # For building MPI programs the selected Visual Studio compiler is used,
namely cl.exe.
  # So there is no need to set a specific MPI compiler.
  #set(MPI_CXX_COMPILER "${CMAKE_CXX_COMPILER}")
  set(MPI_CXX_INCLUDE_PATH "C:/Program Files (x86)/Microsoft
SDKs/MPI/Include")
  # Make sure the correct libraries (64-bit or 32-bit) are selected.
  # Decide between 32-bit and 64-bit libraries for Microsoft's MPI
  if("${CMAKE_SIZEOF_VOID_P}" EQUAL 8)
    set(MS_MPI_ARCH_DIR x64)
  else()
    set(MS_MPI_ARCH_DIR x86)
  endif()
  set(MPI_CXX_LIBRARIES "C:/Program Files (x86)/Microsoft
SDKs/MPI/Lib/${MS_MPI_ARCH_DIR}/msmpi.lib")
  set(MPI_C_INCLUDE_PATH "${MPI_CXX_INCLUDE_PATH}")
  set(MPI_C_LIBRARIES "{${MPI_CXX_LIBRARIES}")
  set(MPIEXEC_NUMPROC_FLAG "-np" CACHE STRING "Flag used by MPI to specify
the number of processes for MPIEXEC; the next option will be the number of
processes.")
else()
    find_package(MPI REQUIRED)
endif()
--------
Some of this is taken from FindMPI.cmake.

Attached is a zipped up file of the working CMakeLists.txt file and a test
file for you.

I looked at FindMPI.cmake but I think you guys are better placed to make
the changes.

Also in the case of FindMPI.cmake, you will need to fix the following
warning message:

CMake Warning (dev) at C:/Program Files
(x86)/CMake/share/cmake-3.1/Modules/FindMPI.cmake:163 (if):
Policy CMP0054 is not set: Only interpret if() arguments as variables or
keywords when unquoted. Run "cmake --help-policy CMP0054" for policy
details. Use the cmake_policy command to set the policy and suppress this
warning.

Quoted variables like "MSVC" will no longer be dereferenced when the policy
is set to NEW. Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
CMakeLists.txt:5 (find_package)
This warning is for project developers. Use -Wno-dev to suppress it.CMake
Warning (dev) at C:/Program Files
(x86)/CMake/share/cmake-3.1/Modules/FindMPI.cmake:163 (if):
Policy CMP0054 is not set: Only interpret if() arguments as variables or
keywords when unquoted. Run "cmake --help-policy CMP0054" for policy
details. Use the cmake_policy command to set the policy and suppress this
warning.

Quoted variables like "MSVC" will no longer be dereferenced when the policy
is set to NEW. Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
CMakeLists.txt:5 (find_package)
This warning is for project developers. Use -Wno-dev to suppress it.


Regards

Andrew


-- 
___________________________________________
Andrew J. P. Maclean

___________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/cmake/attachments/20150301/98f7bfa6/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: test.zip
Type: application/zip
Size: 2088 bytes
Desc: not available
URL: <http://public.kitware.com/pipermail/cmake/attachments/20150301/98f7bfa6/attachment.zip>