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# -*- mode: autoconf -*-
#
# AX_HAVE_OPENCL
#
# Check for an OpenCL implementation. If CL is found, HAVE_OPENCL is defined
# and the required CPP and linker flags are included in the output variables
# "CL_CPPFLAGS" and "CL_LIBS", respectively. If no usable CL implementation is
# found then "no_cl" is set to "yes" (otherwise it is set to "no").
#
# If the header <CL/OpenCL.h> is found, "HAVE_CL_OPENCL_H" is defined. If the
# header <OpenCL/OpenCL.h> is found, HAVE_OPENCL_OPENCL_H is defined. These
# preprocessor definitions may not be mutually exclusive.
#
# This macro first checks /usr/include and /usr/lib for OpenCL support; if it is not
# found in those locations, then it checks in the standard installation locations
# for AMD's (/opt/AMDAPP) and NVIDIA's (/usr/local/cuda) SDKs.
#
# 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 2, 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
# As a special exception, the you may 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.
#
AC_DEFUN([AX_HAVE_OPENCL],
[dnl
AC_REQUIRE([AC_CANONICAL_HOST])dnl
AC_ARG_ENABLE([opencl],
[AS_HELP_STRING([--disable-opencl],
[do not use OpenCL])],
[enable_opencl=$enableval],
[enable_opencl='yes'])
if test x"$enable_opencl" != xno ; then
CPPFLAGS_CL=""
AC_CHECK_HEADERS([CL/cl.h OpenCL/cl.h], [HAVE_CL_H="yes"; break], [HAVE_CL_H="no"])
if test x"$HAVE_CL_H" = xno ; then
# check for AMD's SDK
AC_MSG_CHECKING([for AMD's SDK cl.h])
if test -d /opt/AMDAPP/include/CL ; then
HAVE_CL_H="yes"
AC_DEFINE([HAVE_CL_CL_H])
CPPFLAGS_CL="-I/opt/AMDAPP/include"
fi
AC_MSG_RESULT([$HAVE_CL_H])
fi
if test x"$HAVE_CL_H" = xno ; then
# check for NVIDIA's SDK
AC_MSG_CHECKING([for NVIDIA's SDK cl.h])
if test -d /usr/local/cuda/include/CL ; then
HAVE_CL_H="yes"
AC_DEFINE([HAVE_CL_CL_H])
CPPFLAGS_CL="-I/usr/local/cuda/include"
elif test -d /usr/local/cuda-6.5/include/CL ; then
HAVE_CL_H="yes"
AC_DEFINE([HAVE_CL_CL_H])
CPPFLAGS_CL="-I/usr/local/cuda-6.5/include"
elif test -d /usr/local/cuda-6.0/include/CL ; then
HAVE_CL_H="yes"
AC_DEFINE([HAVE_CL_CL_H])
CPPFLAGS_CL="-I/usr/local/cuda-6.0/include"
elif test -d /usr/local/cuda-5.5/include/CL ; then
HAVE_CL_H="yes"
AC_DEFINE([HAVE_CL_CL_H])
CPPFLAGS_CL="-I/usr/local/cuda-5.5/include"
fi
AC_MSG_RESULT([$HAVE_CL_H])
fi
if test x"$HAVE_CL_H" = xno ; then
no_cl=yes
AC_MSG_WARN([no OpenCL headers found])
CL_ENABLED=false
CL_VERSION=0
else
#
# First we check for Mac OS X, since OpenCL is standard there
#
LIBS_CL="none"
AC_MSG_CHECKING([for OpenCL library])
case "$host_os" in
darwin*) # On Mac OS X we check for installed frameworks
AX_CHECK_FRAMEWORK([OpenCL], [
LIBS_CL="-framework OpenCL"
no_cl=no
AC_MSG_RESULT(yes)
CL_ENABLED=true
CL_VERSION=1
]
,
[
no_cl=yes
AC_MSG_RESULT(no)
CL_ENABLED=false
CL_VERSION=0
])
;;
*)
save_LIBS=$LIBS
save_CFLAGS=$CFLAGS
CFLAGS=$CPPFLAGS_CL
LIBS="$save_LIBS -L/usr/lib64/nvidia -L/usr/lib/nvidia -lOpenCL"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([
#ifdef HAVE_OPENCL_CL_H
#include <OpenCL/cl.h>
#elif defined(HAVE_CL_CL_H)
#include <CL/cl.h>
#endif
#include <stddef.h>
],[
clGetPlatformIDs(0, NULL, NULL);
])],[
no_cl=no
AC_MSG_RESULT(yes)
CL_ENABLED=true
CL_VERSION=1
LIBS_CL="$save_LIBS -L/usr/lib64/nvidia -L/usr/lib/nvidia -lOpenCL"
],[
no_cl=yes
AC_MSG_RESULT(no)
CL_ENABLED=false
CL_VERSION=0
])
LIBS=$save_LIBS
CFLAGS=$save_CFLAGS
;;
esac
fi
else
no_cl=yes
AC_MSG_CHECKING([for OpenCL library])
AC_MSG_RESULT(disabled)
CL_ENABLED=false
CL_VERSION=0
fi
])
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