# =========================================================================== # https://www.gnu.org/software/autoconf-archive/ax_prog_cxx_mpi.html # =========================================================================== # # SYNOPSIS # # AX_PROG_CXX_MPI([MPI-WANTED-TEST[, ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]]) # # DESCRIPTION # # This macro tries to find out how to compile C++ programs that use MPI # (Message Passing Interface), a standard API for parallel process # communication (see http://www-unix.mcs.anl.gov/mpi/). The macro has to # be used instead of the standard macro AC_PROG_CXX and will replace the # standard variable CXX with the found compiler. # # MPI-WANTED-TEST is used to test whether MPI is actually wanted by the # user. If MPI-WANTED_TEST is omitted or if it succeeds, the macro will # try to find out how to use MPI, if it fails, the macro will call # AC_PROG_CC to find a standard C compiler instead. # # When MPI is found, ACTION-IF-FOUND will be executed, if MPI is not found # (or MPI-WANTED-TEST fails) ACTION-IF-NOT-FOUND is executed. If # ACTION-IF-FOUND is not set, the macro will define HAVE_MPI. # # The following example demonstrates usage of the macro: # # # If --with-mpi=auto is used, try to find MPI, but use standard C compiler if it is not found. # # If --with-mpi=yes is used, try to find MPI and fail if it isn't found. # # If --with-mpi=no is used, use a standard C compiler instead. # AC_ARG_WITH(mpi, [AS_HELP_STRING([--with-mpi], # [compile with MPI (parallelization) support. If none is found, # MPI is not used. Default: auto]) # ],,[with_mpi=auto]) # # AX_PROG_CXX_MPI([test x"$with_mpi" != xno],[use_mpi=yes],[ # use_mpi=no # if test x"$with_mpi" = xyes; then # AC_MSG_FAILURE([MPI compiler requested, but couldn't use MPI.]) # else # AC_MSG_WARN([No MPI compiler found, won't use MPI.]) # fi # ]) # # LICENSE # # Copyright (c) 2010,2011 Olaf Lenz <olenz@icp.uni-stuttgart.de> # # 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 <https://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. #serial 3 AC_DEFUN([AX_PROG_CXX_MPI], [ AC_PREREQ(2.50) # Check for compiler # Needs to be split off into an extra macro to ensure right expansion # order. AC_REQUIRE([_AX_PROG_CXX_MPI],[_AX_PROG_CXX_MPI([$1])]) AS_IF([test x"$_ax_prog_cxx_mpi_mpi_wanted" = xno], [ _ax_prog_cxx_mpi_mpi_found=no ], [ AC_LANG_PUSH([C++]) # test whether MPI_Init() is available # We do not use AC_SEARCH_LIBS here, as it caches its outcome and # thus disallows corresponding calls in the other AX_PROG_*_MPI # macros. for lib in NONE mpi mpich; do save_LIBS=$LIBS if test x"$lib" = xNONE; then AC_MSG_CHECKING([for function MPI_Init]) else AC_MSG_CHECKING([for function MPI_Init in -l$lib]) LIBS="-l$lib $LIBS" fi AC_LINK_IFELSE([ AC_LANG_PROGRAM([ extern "C" { void MPI_Init(); } ],[MPI_Init();])], [ _ax_prog_cxx_mpi_mpi_found=yes ], [ _ax_prog_cxx_mpi_mpi_found=no ]) AC_MSG_RESULT($_ax_prog_cxx_mpi_mpi_found) if test "x$_ax_prog_cxx_mpi_mpi_found" = "xyes"; then break; fi LIBS=$save_LIBS done # Check for header AS_IF([test x"$_ax_prog_cxx_mpi_mpi_found" = xyes], [ AC_MSG_CHECKING([for mpi.h]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <mpi.h>])], [ AC_MSG_RESULT(yes)], [ AC_MSG_RESULT(no) _ax_prog_cxx_mpi_mpi_found=no ]) ]) AC_LANG_POP([C++]) ]) # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: AS_IF([test x"$_ax_prog_cxx_mpi_mpi_found" = xyes], [ ifelse([$2],,[AC_DEFINE(HAVE_MPI,1,[Define if you have the MPI library.])],[$2]) : ],[ $3 : ]) ])dnl AX_PROG_CXX_MPI dnl _AX_PROG_CXX_MPI is an internal macro required by AX_PROG_CXX_MPI. dnl To ensure the right expansion order, the main function AX_PROG_CXX_MPI dnl has to be split into two parts. dnl dnl Known MPI C++ compilers: dnl mpic++ dnl mpicxx dnl mpiCC dnl sxmpic++ NEC SX dnl hcp dnl mpxlC_r dnl mpxlC dnl mpixlcxx_r dnl mpixlcxx dnl mpg++ dnl mpc++ dnl mpCC dnl cmpic++ dnl mpiFCC Fujitsu dnl CC dnl AC_DEFUN([_AX_PROG_CXX_MPI], [ AC_ARG_VAR(MPICXX,[MPI C++ compiler command]) ifelse([$1],,[_ax_prog_cxx_mpi_mpi_wanted=yes],[ AC_MSG_CHECKING([whether to compile using MPI]) if $1; then _ax_prog_cxx_mpi_mpi_wanted=yes else _ax_prog_cxx_mpi_mpi_wanted=no fi AC_MSG_RESULT($_ax_prog_cxx_mpi_mpi_wanted) ]) if test x"$_ax_prog_cxx_mpi_mpi_wanted" = xyes; then if test -z "$CXX" && test -n "$MPICXX"; then CXX="$MPICXX" else AC_CHECK_TOOLS([CXX], [mpic++ mpicxx mpiCC sxmpic++ hcp mpxlC_r mpxlC mpixlcxx_r mpixlcxx mpg++ mpc++ mpCC cmpic++ mpiFCC CCicpc pgCC pathCC sxc++ xlC_r xlC bgxlC_r bgxlC openCC sunCC crayCC g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC]) fi fi AC_PROG_CXX ])dnl _AX_PROG_CXX_MPI