cmake-gui mpi

[Peng Ding]

Dear professor:

   I use cmake-gui to configure deall.II. the package mpi  has installed to /usr/local, but cmake gui can not found it. 

i tried to run cmake withou gui, it also give the same problems

 how to resolve this problem. 

-- MPI not found but DEAL_II_WITH_MPI is set to TRUE. Try again with more aggressive search paths:
-- Performing Test MPI_HAVE_MPI_SEEK_SET
-- Performing Test MPI_HAVE_MPI_SEEK_SET - Success
-- Found MPI_MPI_H
--   MPI_VERSION: 3.1
--   MPI_LIBRARIES: *** Required variable "MPI_CXX_LIBRARIES" empty ***
--   MPI_INCLUDE_DIRS: *** Required variable "MPI_CXX_INCLUDE_PATH" empty ***
--   MPI_USER_INCLUDE_DIRS: *** Required variable "MPI_CXX_INCLUDE_PATH" empty ***
--   MPI_CXX_FLAGS:  
--   MPI_LINKER_FLAGS:  
-- Could NOT find MPI
-- DEAL_II_WITH_MPI has unmet external dependencies.
CMake Error at cmake/configure/configure_1_mpi.cmake:77 (MESSAGE):

[Jean-Paul Pelteret]

Dear Peng,

This part of the installation documentation suggests that you can explicitly indicate which MPI compilers to use with the following flags passed to CMake:

cmake -DDEAL_II_WITH_MPI:BOOL=ON -DCMAKE_C_COMPILER="<full/path/to/mpicc>" -DCMAKE_CXX_COMPILER="<full/path/to/mpicxx>" -DCMAKE_Fortran_COMPILER="<full/path/to/mpif90>" <...>

I would suggest in your case to pass the full paths to the MPI executables since deal.II couldn't pick them up in the first place. Presumably the means that the binaries are located at /usr/local/bin/<mpicc/mpicxx/mpif90> on your machine.

Does this help you solve the problem?

Jean-Paul

[ztdep...@gmail.com]

Thank you . I solve it by specify the "native compiler" as mpic++ when i start cmake-gui.

It works fine now.

Regards

---

ztdep...@gmail.com

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