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ax_mpi

Synopsis

AX_MPI([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])

Description

This macro tries to find out how to compile programs that use MPI (Message Passing Interface), a standard API for parallel process communication (see http://www-unix.mcs.anl.gov/mpi/)

On success, it sets the MPICC, MPICXX, MPIF77, or MPIFC output variable to the name of the MPI compiler, depending upon the current language. (This may just be $CC/$CXX/$F77/$FC, but is more often something like mpicc/mpiCC/mpif77/mpif90.) It also sets MPILIBS to any libraries that are needed for linking MPI (e.g. -lmpi or -lfmpi, if a special MPICC/MPICXX/MPIF77/MPIFC was not found).

Note that this macro should be used only if you just have a few source files that need to be compiled using MPI. In particular, you should neither overwrite CC/CXX/F77/FC with the values of MPICC/MPICXX/MPIF77/MPIFC, nor assume that you can use the same flags etc. as the standard compilers. If you want to compile a whole program using the MPI compiler commands, use one of the macros AX_PROG_{CC,CXX,FC}_MPI.

ACTION-IF-FOUND is a list of shell commands to run if an MPI library is found, and ACTION-IF-NOT-FOUND is a list of commands to run if it is not found. If ACTION-IF-FOUND is not specified, the default action will define HAVE_MPI.

Source Code

Download the latest version of ax_mpi.m4 or browse the macro’s revision history.

License

Copyright © 2008 Steven G. Johnson stevenj@alum.mit.edu
Copyright © 2008 Julian C. Cummings cummings@cacr.caltech.edu

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

As a special exception, the respective Autoconf Macro’s copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts, even though portions of the text of the Macro appear in them. The GNU General Public License (GPL) does govern all other use of the material that constitutes the Autoconf Macro.

This special exception to the GPL applies to versions of the Autoconf Macro released by the Autoconf Archive. When you make and distribute a modified version of the Autoconf Macro, you may extend this special exception to the GPL to apply to your modified version as well.


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