1 # -*- mode: autoconf -*- 2 # 3 # AX_OPENCL 4 # 5 # Check for an OpenCL implementation. If CL is found, _OPENCL is defined and 6 # the required compiler and linker flags are included in the output variables 7 # "CL_CFLAGS" and "CL_LIBS", respectively. If no usable CL implementation is 8 # found, "no_cl" is set to "yes". 9 # 10 # If the header "CL/OpenCL.h" is found, "HAVE_CL_OPENCL_H" is defined. If the 11 # header "OpenCL/OpenCL.h" is found, HAVE_OPENCL_OPENCL_H is defined. These 12 # preprocessor definitions may not be mutually exclusive. 13 # 14 # Based on AX_CHECK_GL, version: 2.4 author: Braden McDaniel 15 # <braden (a] endoframe.com> 16 # 17 # This program is free software; you can redistribute it and/or modify 18 # it under the terms of the GNU General Public License as published by 19 # the Free Software Foundation; either version 2, or (at your option) 20 # any later version. 21 # 22 # This program is distributed in the hope that it will be useful, 23 # but WITHOUT ANY WARRANTY; without even the implied warranty of 24 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 # GNU General Public License for more details. 26 # 27 # You should have received a copy of the GNU General Public License 28 # along with this program; if not, write to the Free Software 29 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 30 # 02110-1301, USA. 31 # 32 # As a special exception, the you may copy, distribute and modify the 33 # configure scripts that are the output of Autoconf when processing 34 # the Macro. You need not follow the terms of the GNU General Public 35 # License when using or distributing such scripts. 36 # 37 AC_DEFUN([AX_OPENCL], 38 [AC_REQUIRE([AC_CANONICAL_HOST])dnl 39 AC_REQUIRE([AC_PROG_SED])dnl 40 AC_REQUIRE([ACX_PTHREAD])dnl 41 42 AC_ARG_ENABLE([opencl], 43 [AC_HELP_STRING([--enable-opencl], 44 [enable OpenCL support])], 45 [enable_opencl=$enableval], 46 [enable_opencl='no']) 47 48 if test "$enable_opencl" = 'yes'; then 49 AC_LANG_PUSH([$1]) 50 AX_LANG_COMPILER_MS 51 AS_IF([test X$ax_compiler_ms = Xno], 52 [CL_CFLAGS="${PTHREAD_CFLAGS}"; CL_LIBS="${PTHREAD_LIBS} -lm"]) 53 54 ax_save_CPPFLAGS=$CPPFLAGS 55 ax_save_CL_CFLAGS=$CL_CFLAGS 56 57 found_opencl_header='no' 58 CPPFLAGS="$CL_CFLAGS $CPPFLAGS" 59 AC_CHECK_HEADERS([CL/cl.h OpenCL/cl.h], 60 [found_opencl_header='yes' 61 break;], 62 [found_opencl_header='no']) 63 64 AS_IF([test X$found_opencl_header = Xno], 65 [AS_UNSET([ac_cv_header_CL_cl_h]) 66 AS_UNSET([ac_cv_header_OpenCL_cl_h]) 67 CL_CFLAGS="-I$AMDAPPSDKROOT/include" 68 CPPFLAGS="$ax_save_CPPFLAGS $CL_CFLAGS" 69 AC_CHECK_HEADERS([CL/cl.h OpenCL/cl.h], 70 [found_opencl_header='yes' 71 break;], 72 [found_opencl_header='no']) 73 ], 74 []) 75 76 CPPFLAGS="$ax_save_CPPFLAGS" 77 78 AC_CHECK_HEADERS([windows.h]) 79 80 m4_define([AX_OPENCL_PROGRAM], 81 [AC_LANG_PROGRAM([[ 82 # if defined(HAVE_WINDOWS_H) && defined(_WIN32) 83 # include <windows.h> 84 # endif 85 # ifdef HAVE_CL_CL_H 86 # include <CL/cl.h> 87 # elif defined(HAVE_OPENCL_CL_H) 88 # include <OpenCL/cl.h> 89 # else 90 # error no CL.h 91 # endif]], 92 [[clCreateContextFromType(0,0,0,0,0)]])]) 93 94 AC_CACHE_CHECK([for OpenCL library], [ax_cv_check_cl_libcl], 95 [ax_cv_check_cl_libcl=no 96 case $host_cpu in 97 x86_64) ax_check_cl_libdir=lib64 98 ax_check_cl_amd_libdir=x86_64 99 ;; 100 *) ax_check_cl_libdir=lib 101 ax_check_cl_amd_libdir=x86 102 ;; 103 esac 104 ax_save_CPPFLAGS=$CPPFLAGS 105 CPPFLAGS="$CL_CFLAGS $CPPFLAGS" 106 ax_save_LIBS=$LIBS 107 LIBS="" 108 ax_check_libs="-lOpenCL -lCL -lclparser" 109 for ax_lib in $ax_check_libs; do 110 AS_IF([test X$ax_compiler_ms = Xyes], 111 [ax_try_lib=`echo $ax_lib | $SED -e 's/^-l//' -e 's/$/.lib/'`], 112 [ax_try_lib=$ax_lib]) 113 LIBS="$ax_try_lib $CL_LIBS $ax_save_LIBS" 114 AC_LINK_IFELSE([AX_OPENCL_PROGRAM], 115 [ax_cv_check_cl_libcl=$ax_try_lib; break], 116 [ax_check_cl_nvidia_flags="-L/usr/$ax_check_cl_libdir/nvidia" LIBS="$ax_try_lib $ax_check_cl_nvidia_flags $CL_LIBS $ax_save_LIBS" 117 AC_LINK_IFELSE([AX_OPENCL_PROGRAM], 118 [ax_cv_check_cl_libcl="$ax_try_lib $ax_check_cl_nvidia_flags"; break], 119 [ax_check_cl_dylib_flag='-Wl,-framework,OpenCL -L/System/Library/Frameworks/OpenCL.framework/Versions/A/Libraries' LIBS="$ax_try_lib $ax_check_cl_dylib_flag $CL_LIBS $ax_save_LIBS" 120 AC_LINK_IFELSE([AX_OPENCL_PROGRAM], 121 [ax_cv_check_cl_libcl="$ax_try_lib $ax_check_cl_dylib_flag"; break], 122 [ax_check_cl_amd_flags="-L$AMDAPPSDKROOT/lib/$ax_check_cl_amd_libdir" LIBS="$ax_try_lib $ax_check_cl_amd_flags $CL_LIBS $ax_save_LIBS" 123 AC_LINK_IFELSE([AX_OPENCL_PROGRAM], 124 [ax_cv_check_cl_libcl="$ax_try_lib $ax_check_cl_amd_flags"; break] 125 ) 126 ] 127 )])]) 128 done 129 130 AS_IF([test "X$ax_cv_check_cl_libcl" = Xno], 131 [LIBS='-Wl,-framework,OpenCL' 132 AC_LINK_IFELSE([AX_OPENCL_PROGRAM], 133 [ax_cv_check_cl_libcl=$LIBS])]) 134 135 LIBS=$ax_save_LIBS 136 CPPFLAGS=$ax_save_CPPFLAGS]) 137 138 AS_IF([test "X$ax_cv_check_cl_libcl" = Xno], 139 [no_cl=yes; CL_CFLAGS=""; CL_LIBS=""], 140 [CL_LIBS="$ax_cv_check_cl_libcl $CL_LIBS"; AC_DEFINE([_OPENCL], [1], 141 [Define this for the OpenCL Accelerator])]) 142 AC_LANG_POP([$1]) 143 fi 144 145 AC_SUBST([CL_CFLAGS]) 146 147 #remove static link on Linux 148 CL_LIBS=`echo $CL_LIBS | $SED -e 's/-lOpenCL //'` 149 AC_SUBST([CL_LIBS]) 150 ])dnl 151
