| # Check if OpenCL is available and that it supports a CPU device. |
| # The check for a CPU device is the same check that is performed |
| # by opencl_create_device in ocl_utilities.c |
| AC_DEFUN([AX_CHECK_OPENCL], [ |
| AC_SUBST(HAVE_OPENCL) |
| HAVE_OPENCL=no |
| AC_CHECK_HEADER([CL/opencl.h], [ |
| AC_CHECK_LIB([OpenCL], [clGetPlatformIDs], [ |
| SAVE_LIBS=$LIBS |
| LIBS="$LIBS -lOpenCL" |
| AC_MSG_CHECKING([for OpenCL CPU device]) |
| AC_RUN_IFELSE([AC_LANG_PROGRAM( |
| [[#include <CL/opencl.h>]], [[ |
| cl_platform_id platform; |
| cl_device_id dev; |
| |
| if (clGetPlatformIDs(1, &platform, NULL) < 0) |
| return 1; |
| if (clGetDeviceIDs(platform, CL_DEVICE_TYPE_CPU, 1, &dev, NULL) < 0) |
| return 1; |
| ]])], [HAVE_OPENCL=yes]) |
| AC_MSG_RESULT($HAVE_OPENCL) |
| LIBS=$SAVE_LIBS |
| ])]) |
| ]) |
