forked from mia/Aegisub
104 lines
4.1 KiB
Text
104 lines
4.1 KiB
Text
|
##### http://autoconf-archive.cryp.to/ax_openmp.html
|
||
|
|
#
|
||
|
|
# SYNOPSIS
|
||
|
|
#
|
||
|
|
# AX_OPENMP([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
|
||
|
|
#
|
||
|
|
# DESCRIPTION
|
||
|
|
#
|
||
|
|
# This macro tries to find out how to compile programs that use
|
||
|
|
# OpenMP a standard API and set of compiler directives for parallel
|
||
|
|
# programming (see http://www-unix.mcs/)
|
||
|
|
#
|
||
|
|
# On success, it sets the
|
||
|
|
# OPENMP_CFLAGS/OPENMP_CXXFLAGS/OPENMP_F77FLAGS output variable to
|
||
|
|
# the flag (e.g. -omp) used both to compile *and* link OpenMP
|
||
|
|
# programs in the current language.
|
||
|
|
#
|
||
|
|
# NOTE: You are assumed to not only compile your program with these
|
||
|
|
# flags, but also link it with them as well.
|
||
|
|
#
|
||
|
|
# If you want to compile everything with OpenMP, you should set:
|
||
|
|
#
|
||
|
|
# CFLAGS="$CFLAGS $OPENMP_CFLAGS"
|
||
|
|
# #OR# CXXFLAGS="$CXXFLAGS $OPENMP_CXXFLAGS"
|
||
|
|
# #OR# FFLAGS="$FFLAGS $OPENMP_FFLAGS"
|
||
|
|
#
|
||
|
|
# (depending on the selected language).
|
||
|
|
#
|
||
|
|
# The user can override the default choice by setting the
|
||
|
|
# corresponding environment variable (e.g. OPENMP_CFLAGS).
|
||
|
|
#
|
||
|
|
# ACTION-IF-FOUND is a list of shell commands to run if an OpenMP
|
||
|
|
# flag is found, and ACTION-IF-NOT-FOUND is a list of commands to run
|
||
|
|
# it if it is not found. If ACTION-IF-FOUND is not specified, the
|
||
|
|
# default action will define HAVE_OPENMP.
|
||
|
|
#
|
||
|
|
# LAST MODIFICATION
|
||
|
|
#
|
||
|
|
# 2007-07-29
|
||
|
|
#
|
||
|
|
# COPYLEFT
|
||
|
|
#
|
||
|
|
# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.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 Macro 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.
|
||
|
|
|
||
|
|
AC_DEFUN([AX_OPENMP], [
|
||
|
|
AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX
|
||
|
|
|
||
|
|
AC_CACHE_CHECK([for OpenMP flag of _AC_LANG compiler], ax_cv_[]_AC_LANG_ABBREV[]_openmp, [save[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
|
||
|
|
ax_cv_[]_AC_LANG_ABBREV[]_openmp=unknown
|
||
|
|
# Flags to try: -fopenmp (gcc), -openmp (icc), -mp (SGI & PGI),
|
||
|
|
# -xopenmp (Sun), -omp (Tru64), -qsmp=omp (AIX), none
|
||
|
|
ax_openmp_flags="-fopenmp -openmp -mp -xopenmp -omp -qsmp=omp none"
|
||
|
|
if test "x$OPENMP_[]_AC_LANG_PREFIX[]FLAGS" != x; then
|
||
|
|
ax_openmp_flags="$OPENMP_[]_AC_LANG_PREFIX[]FLAGS $ax_openmp_flags"
|
||
|
|
fi
|
||
|
|
for ax_openmp_flag in $ax_openmp_flags; do
|
||
|
|
case $ax_openmp_flag in
|
||
|
|
none) []_AC_LANG_PREFIX[]FLAGS=$save[]_AC_LANG_PREFIX[] ;;
|
||
|
|
*) []_AC_LANG_PREFIX[]FLAGS="$save[]_AC_LANG_PREFIX[]FLAGS $ax_openmp_flag" ;;
|
||
|
|
esac
|
||
|
|
AC_TRY_LINK_FUNC(omp_set_num_threads,
|
||
|
|
[ax_cv_[]_AC_LANG_ABBREV[]_openmp=$ax_openmp_flag; break])
|
||
|
|
done
|
||
|
|
[]_AC_LANG_PREFIX[]FLAGS=$save[]_AC_LANG_PREFIX[]FLAGS
|
||
|
|
])
|
||
|
|
if test "x$ax_cv_[]_AC_LANG_ABBREV[]_openmp" = "xunknown"; then
|
||
|
|
m4_default([$2],:)
|
||
|
|
else
|
||
|
|
if test "x$ax_cv_[]_AC_LANG_ABBREV[]_openmp" != "xnone"; then
|
||
|
|
OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ax_cv_[]_AC_LANG_ABBREV[]_openmp
|
||
|
|
fi
|
||
|
|
m4_default([$1], [AC_DEFINE(HAVE_OPENMP,1,[Define if OpenMP is enabled])])
|
||
|
|
fi
|
||
|
|
])dnl AX_OPENMP
|