118 lines
4.4 KiB
Text
118 lines
4.4 KiB
Text
# -*- mode: autoconf -*-
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#
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# AX_OPENCL
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#
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# Check for an OpenCL implementation. If CL is found, _OPENCL is defined and
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# the required compiler and linker flags are included in the output variables
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# "CL_CFLAGS" and "CL_LIBS", respectively. If no usable CL implementation is
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# found, "no_cl" is set to "yes".
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#
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# If the header "CL/OpenCL.h" is found, "HAVE_CL_OPENCL_H" is defined. If the
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# header "OpenCL/OpenCL.h" is found, HAVE_OPENCL_OPENCL_H is defined. These
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# preprocessor definitions may not be mutually exclusive.
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#
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# Based on AX_CHECK_GL, version: 2.4 author: Braden McDaniel
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# <braden@endoframe.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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#
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# As a special exception, the you may copy, distribute and modify the
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# configure scripts that are the output of Autoconf when processing
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# the Macro. You need not follow the terms of the GNU General Public
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# License when using or distributing such scripts.
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#
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AC_DEFUN([AX_OPENCL],
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[AC_REQUIRE([AC_CANONICAL_HOST])dnl
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AC_REQUIRE([AC_PROG_SED])dnl
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AC_REQUIRE([ACX_PTHREAD])dnl
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AC_ARG_ENABLE([opencl],
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[AC_HELP_STRING([--enable-opencl],
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[enable OpenCL support])],
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[enable_opencl=$enableval],
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[enable_opencl='no'])
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if test "$enable_opencl" = 'yes'; then
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AC_LANG_PUSH([$1])
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AX_LANG_COMPILER_MS
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AS_IF([test X$ax_compiler_ms = Xno],
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[CL_CFLAGS="${PTHREAD_CFLAGS}"; CL_LIBS="${PTHREAD_LIBS} -lm"])
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ax_save_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CL_CFLAGS $CPPFLAGS"
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AC_CHECK_HEADERS([CL/cl.h OpenCL/cl.h])
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CPPFLAGS=$ax_save_CPPFLAGS
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AC_CHECK_HEADERS([windows.h])
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m4_define([AX_OPENCL_PROGRAM],
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[AC_LANG_PROGRAM([[
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# if defined(HAVE_WINDOWS_H) && defined(_WIN32)
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# include <windows.h>
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# endif
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# ifdef HAVE_CL_CL_H
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# include <CL/cl.h>
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# elif defined(HAVE_OPENCL_CL_H)
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# include <OpenCL/cl.h>
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# else
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# error no CL.h
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# endif]],
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[[clCreateContextFromType(0,0,0,0,0)]])])
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AC_CACHE_CHECK([for OpenCL library], [ax_cv_check_cl_libcl],
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[ax_cv_check_cl_libcl=no
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case $host_cpu in
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x86_64) ax_check_cl_libdir=lib64 ;;
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*) ax_check_cl_libdir=lib ;;
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esac
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ax_save_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CL_CFLAGS $CPPFLAGS"
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ax_save_LIBS=$LIBS
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LIBS=""
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ax_check_libs="-lOpenCL -lCL -lclparser"
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for ax_lib in $ax_check_libs; do
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AS_IF([test X$ax_compiler_ms = Xyes],
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[ax_try_lib=`echo $ax_lib | $SED -e 's/^-l//' -e 's/$/.lib/'`],
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[ax_try_lib=$ax_lib])
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LIBS="$ax_try_lib $CL_LIBS $ax_save_LIBS"
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AC_LINK_IFELSE([AX_OPENCL_PROGRAM],
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[ax_cv_check_cl_libcl=$ax_try_lib; break],
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[ax_check_cl_nvidia_flags="-L/usr/$ax_check_cl_libdir/nvidia" LIBS="$ax_try_lib $ax_check_cl_nvidia_flags $CL_LIBS $ax_save_LIBS"
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AC_LINK_IFELSE([AX_OPENCL_PROGRAM],
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[ax_cv_check_cl_libcl="$ax_try_lib $ax_check_cl_nvidia_flags"; break],
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[ax_check_cl_dylib_flag='-Wl,-framework,OpenCL -L/System/Library/Frameworks/OpenCL.framework/Versions/A/Libraries' LIBS="$ax_try_lib $ax_check_cl_dylib_flag $CL_LIBS $ax_save_LIBS"
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AC_LINK_IFELSE([AX_OPENCL_PROGRAM],
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[ax_cv_check_cl_libcl="$ax_try_lib $ax_check_cl_dylib_flag"; break])])])
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done
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AS_IF([test "X$ax_cv_check_cl_libcl" = Xno],
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[LIBS='-Wl,-framework,OpenCL'
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AC_LINK_IFELSE([AX_OPENCL_PROGRAM],
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[ax_cv_check_cl_libcl=$LIBS])])
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LIBS=$ax_save_LIBS
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CPPFLAGS=$ax_save_CPPFLAGS])
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AS_IF([test "X$ax_cv_check_cl_libcl" = Xno],
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[no_cl=yes; CL_CFLAGS=""; CL_LIBS=""],
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[CL_LIBS="$ax_cv_check_cl_libcl $CL_LIBS"; AC_DEFINE([_OPENCL], [1],
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[Define this for the OpenCL Accelerator])])
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AC_LANG_POP([$1])
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fi
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AC_SUBST([CL_CFLAGS])
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AC_SUBST([CL_LIBS])
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])dnl
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