Revision f76435fbd6e22081b7928da96b9b17943d47dbe0 authored by Cyril Bouvier on 18 February 2019, 15:01:05 UTC, committed by Cyril Bouvier on 18 February 2019, 15:01:05 UTC
1 parent dff535d
omp-check.m4
dnl turn on OPENMP
dnl Copyright (c) 2011 FFLAS-FFPACK
dnl Created by BB, 2014-07-01
dnl ========LICENCE========
dnl This file is part of the library FFLAS-FFPACK.
dnl
dnl FFLAS-FFPACK is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library; if not, write to the Free Software
dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
dnl ========LICENCE========
dnl
dnl FF_CHECK_OMP
dnl
dnl turn on OpenMP if available
AC_DEFUN([FF_CHECK_OMP],
[ AC_ARG_ENABLE(openmp,
[AC_HELP_STRING([--enable-openmp],
[ Use OpenMP ])
],
[ avec_omp=$enable_openmp],
[ avec_omp=yes ]
)
AC_MSG_CHECKING(for OpenMP)
AS_IF([ test "x$avec_omp" != "xno" ],
[
BACKUP_CXXFLAGS=${CXXFLAGS}
OMPFLAGS="-fopenmp"
CXXFLAGS="${BACKUP_CXXFLAGS} ${OMPFLAGS}"
AC_TRY_RUN([
#include <omp.h>
int main() {
int p = omp_get_num_threads();
return 0;
}
],
[ omp_found="yes" ],
[ omp_found="no" ],
[
echo "cross compiling...disabling"
omp_found="no"
])
AS_IF( [ test "x$omp_found" = "xyes" ],
[
AC_DEFINE(USE_OPENMP,1,[Define if OMP is available])
AC_SUBST(OMPFLAGS)
AC_MSG_RESULT(yes)
HAVE_OMP=yes
],
[
OMPFLAGS=
AC_SUBST(OMPFLAGS)
AC_MSG_RESULT(no)
]
)
CXXFLAGS=${BACKUP_CXXFLAGS}
],
[ AC_MSG_RESULT(no) ]
)
AM_CONDITIONAL(FFLASFFPACK_HAVE_OMP, test "x$HAVE_OMP" = "xyes")
]
)
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