CL_API_CALL        16 src/runtime/opencl.cpp #define CL_FN(ret, fn, args) WEAK ret (CL_API_CALL *fn) args;
CL_API_CALL        64 src/runtime/opencl.cpp     #define CL_FN(ret, fn, args) fn = get_cl_symbol<ret (CL_API_CALL *)args>(user_context, #fn);