1# =========================================================================== 2# http://www.gnu.org/software/autoconf-archive/ax_prog_cxx_mpi.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_PROG_CXX_MPI([MPI-WANTED-TEST[, ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]]) 8# 9# DESCRIPTION 10# 11# This macro tries to find out how to compile C++ programs that use MPI 12# (Message Passing Interface), a standard API for parallel process 13# communication (see http://www-unix.mcs.anl.gov/mpi/). The macro has to 14# be used instead of the standard macro AC_PROG_CXX and will replace the 15# standard variable CXX with the found compiler. 16# 17# MPI-WANTED-TEST is used to test whether MPI is actually wanted by the 18# user. If MPI-WANTED_TEST is omitted or if it succeeds, the macro will 19# try to find out how to use MPI, if it fails, the macro will call 20# AC_PROG_CC to find a standard C compiler instead. 21# 22# When MPI is found, ACTION-IF-FOUND will be executed, if MPI is not found 23# (or MPI-WANTED-TEST fails) ACTION-IF-NOT-FOUND is executed. If 24# ACTION-IF-FOUND is not set, the macro will define HAVE_MPI. 25# 26# The following example demonstrates usage of the macro: 27# 28# # If --with-mpi=auto is used, try to find MPI, but use standard C compiler if it is not found. 29# # If --with-mpi=yes is used, try to find MPI and fail if it isn't found. 30# # If --with-mpi=no is used, use a standard C compiler instead. 31# AC_ARG_WITH(mpi, [AS_HELP_STRING([--with-mpi], 32# [compile with MPI (parallelization) support. If none is found, 33# MPI is not used. Default: auto]) 34# ],,[with_mpi=auto]) 35# 36# AX_PROG_CXX_MPI([test x"$with_mpi" != xno],[use_mpi=yes],[ 37# use_mpi=no 38# if test x"$with_mpi" = xyes; then 39# AC_MSG_FAILURE([MPI compiler requested, but couldn't use MPI.]) 40# else 41# AC_MSG_WARN([No MPI compiler found, won't use MPI.]) 42# fi 43# ]) 44# 45# LICENSE 46# 47# Copyright (c) 2010,2011 Olaf Lenz <olenz@icp.uni-stuttgart.de> 48# 49# This program is free software: you can redistribute it and/or modify it 50# under the terms of the GNU General Public License as published by the 51# Free Software Foundation, either version 3 of the License, or (at your 52# option) any later version. 53# 54# This program is distributed in the hope that it will be useful, but 55# WITHOUT ANY WARRANTY; without even the implied warranty of 56# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 57# Public License for more details. 58# 59# You should have received a copy of the GNU General Public License along 60# with this program. If not, see <http://www.gnu.org/licenses/>. 61# 62# As a special exception, the respective Autoconf Macro's copyright owner 63# gives unlimited permission to copy, distribute and modify the configure 64# scripts that are the output of Autoconf when processing the Macro. You 65# need not follow the terms of the GNU General Public License when using 66# or distributing such scripts, even though portions of the text of the 67# Macro appear in them. The GNU General Public License (GPL) does govern 68# all other use of the material that constitutes the Autoconf Macro. 69# 70# This special exception to the GPL applies to versions of the Autoconf 71# Macro released by the Autoconf Archive. When you make and distribute a 72# modified version of the Autoconf Macro, you may extend this special 73# exception to the GPL to apply to your modified version as well. 74 75#serial 2 76 77AC_DEFUN([AX_PROG_CXX_MPI], [ 78AC_PREREQ(2.50) 79 80# Check for compiler 81# Needs to be split off into an extra macro to ensure right expansion 82# order. 83AC_REQUIRE([_AX_PROG_CXX_MPI],[_AX_PROG_CXX_MPI([$1])]) 84 85AS_IF([test x"$_ax_prog_cxx_mpi_mpi_wanted" = xno], 86 [ _ax_prog_cxx_mpi_mpi_found=no ], 87 [ 88 AC_LANG_PUSH([C++]) 89 90 # test whether MPI_Init() is available 91 # We do not use AC_SEARCH_LIBS here, as it caches its outcome and 92 # thus disallows corresponding calls in the other AX_PROG_*_MPI 93 # macros. 94 for lib in NONE mpi mpich; do 95 save_LIBS=$LIBS 96 if test x"$lib" = xNONE; then 97 AC_MSG_CHECKING([for function MPI_Init]) 98 else 99 AC_MSG_CHECKING([for function MPI_Init in -l$lib]) 100 LIBS="-l$lib $LIBS" 101 fi 102 AC_LINK_IFELSE([ 103 AC_LANG_PROGRAM([ 104extern "C" { void MPI_Init(); } 105],[MPI_Init();])], 106 [ _ax_prog_cxx_mpi_mpi_found=yes ], 107 [ _ax_prog_cxx_mpi_mpi_found=no ]) 108 AC_MSG_RESULT($_ax_prog_cxx_mpi_mpi_found) 109 if test "x$_ax_prog_cxx_mpi_mpi_found" = "xyes"; then 110 break; 111 fi 112 LIBS=$save_LIBS 113 done 114 115 # Check for header 116 AS_IF([test x"$_ax_prog_cxx_mpi_mpi_found" = xyes], [ 117 AC_MSG_CHECKING([for mpi.h]) 118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <mpi.h>])], 119 [ AC_MSG_RESULT(yes)], 120 [ AC_MSG_RESULT(no) 121 _ax_prog_cxx_mpi_mpi_found=no 122 ]) 123 ]) 124 AC_LANG_POP([C++]) 125]) 126 127# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: 128AS_IF([test x"$_ax_prog_cxx_mpi_mpi_found" = xyes], [ 129 ifelse([$2],,[AC_DEFINE(HAVE_MPI,1,[Define if you have the MPI library.])],[$2]) 130 : 131],[ 132 $3 133 : 134]) 135 136])dnl AX_PROG_CXX_MPI 137 138dnl _AX_PROG_CXX_MPI is an internal macro required by AX_PROG_CXX_MPI. 139dnl To ensure the right expansion order, the main function AX_PROG_CXX_MPI 140dnl has to be split into two parts. 141dnl 142dnl Known MPI C++ compilers: 143dnl mpic++ 144dnl mpicxx 145dnl mpiCC 146dnl sxmpic++ NEC SX 147dnl hcp 148dnl mpxlC_r 149dnl mpxlC 150dnl mpixlcxx_r 151dnl mpixlcxx 152dnl mpg++ 153dnl mpc++ 154dnl mpCC 155dnl cmpic++ 156dnl mpiFCC Fujitsu 157dnl CC 158dnl 159AC_DEFUN([_AX_PROG_CXX_MPI], [ 160 AC_ARG_VAR(MPICXX,[MPI C++ compiler command]) 161 ifelse([$1],,[_ax_prog_cxx_mpi_mpi_wanted=yes],[ 162 AC_MSG_CHECKING([whether to compile using MPI]) 163 if $1; then 164 _ax_prog_cxx_mpi_mpi_wanted=yes 165 else 166 _ax_prog_cxx_mpi_mpi_wanted=no 167 fi 168 AC_MSG_RESULT($_ax_prog_cxx_mpi_mpi_wanted) 169 ]) 170 if test x"$_ax_prog_cxx_mpi_mpi_wanted" = xyes; then 171 if test -z "$CXX" && test -n "$MPICXX"; then 172 CXX="$MPICXX" 173 else 174 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]) 175 fi 176 fi 177 AC_PROG_CXX 178])dnl _AX_PROG_CXX_MPI 179