I have just begun to learn openCL and coded with VC++ 2010. I have followed this instruction to set up openCL for Visual Studio. Everything is fine except that the paths are a little different for CUDA 5, so I ignored "~\NVIDIA Corporation\NVIDIA GPU Computing SDK\shared\inc".

http://opencl.codeplex.com/wikipage?tit ... 0Tutorials

Then I compiled some very basic examples with only CL/cl.h and they worked fine. However, when I began to include , I kept receiving the error "fatal error: 'stdio.h' file not found"

Here is an exampe (this code is from openCl in Action)

#define _CRT_SECURE_NO_WARNINGS
#define PROGRAM_FILE "matvec.cl"
#define KERNEL_FUNC "matvec_mult"

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>

#ifdef MAC
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endif


int main() {

/* Host/device data structures */
cl_platform_id platform;
cl_device_id device;
cl_context context;
cl_command_queue queue;
cl_int i, err;

/* Program/kernel data structures */
cl_program program;
FILE *program_handle;
char *program_buffer, *program_log;
size_t program_size, log_size;
cl_kernel kernel;

/* Data and buffers */
float mat[16], vec[4], result[4];
float correct[4] = {0.0f, 0.0f, 0.0f, 0.0f};
cl_mem mat_buff, vec_buff, res_buff;
size_t work_units_per_kernel;

/* Initialize data to be processed by the kernel */
for(i=0; i<16; i++) {
mat[i] = i * 2.0f;
}
for(i=0; i<4; i++) {
vec[i] = i * 3.0f;
correct[0] += mat[i] * vec[i];
correct[1] += mat[i+4] * vec[i];
correct[2] += mat[i+8] * vec[i];
correct[3] += mat[i+12] * vec[i];
}

/* Identify a platform */
err = clGetPlatformIDs(1, &platform, NULL);
if(err < 0) {
perror("Couldn't find any platforms");
exit(1);
}

/* Access a device */
err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1,
&device, NULL);
if(err < 0) {
perror("Couldn't find any devices");
exit(1);
}

/* Create the context */
context = clCreateContext(NULL, 1, &device, NULL,
NULL, &err);
if(err < 0) {
perror("Couldn't create a context");
exit(1);
}

/* Read program file and place content into buffer */
program_handle = fopen(PROGRAM_FILE, "r");
if(program_handle == NULL) {
perror("Couldn't find the program file");
exit(1);
}
fseek(program_handle, 0, SEEK_END);
program_size = ftell(program_handle);
rewind(program_handle);
program_buffer = (char*)malloc(program_size + 1);
program_buffer[program_size] = '\0';
fread(program_buffer, sizeof(char), program_size, program_handle);
fclose(program_handle);

/* Create program from file */
program = clCreateProgramWithSource(context, 1,
(const char**)&program_buffer, &program_size, &err);
if(err < 0) {
perror("Couldn't create the program");
exit(1);
}
free(program_buffer);

/* Build program */
err = clBuildProgram(program, 0, NULL, NULL, NULL, NULL);
if(err < 0) {

/* Find size of log and print to std output */
clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG,
0, NULL, &log_size);
program_log = (char*) malloc(log_size + 1);
program_log[log_size] = '\0';
clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG,
log_size + 1, program_log, NULL);
printf("%s\n", program_log);
free(program_log);
exit(1);
}

/* Create kernel for the mat_vec_mult function */
kernel = clCreateKernel(program, KERNEL_FUNC, &err);
if(err < 0) {
perror("Couldn't create the kernel");
exit(1);
}

/* Create CL buffers to hold input and output data */
mat_buff = clCreateBuffer(context, CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR, sizeof(float)*16, mat, &err);
if(err < 0) {
perror("Couldn't create a buffer object");
exit(1);
}
vec_buff = clCreateBuffer(context, CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR, sizeof(float)*4, vec, NULL);
res_buff = clCreateBuffer(context, CL_MEM_WRITE_ONLY,
sizeof(float)*4, NULL, NULL);

/* Create kernel arguments from the CL buffers */
err = clSetKernelArg(kernel, 0, sizeof(cl_mem), &mat_buff);
if(err < 0) {
perror("Couldn't set the kernel argument");
exit(1);
}
clSetKernelArg(kernel, 1, sizeof(cl_mem), &vec_buff);
clSetKernelArg(kernel, 2, sizeof(cl_mem), &res_buff);

/* Create a CL command queue for the device*/
queue = clCreateCommandQueue(context, device, 0, &err);
if(err < 0) {
perror("Couldn't create the command queue");
exit(1);
}

/* Enqueue the command queue to the device */
work_units_per_kernel = 4; /* 4 work-units per kernel */
err = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, &work_units_per_kernel,
NULL, 0, NULL, NULL);
if(err < 0) {
perror("Couldn't enqueue the kernel execution command");
exit(1);
}

/* Read the result */
err = clEnqueueReadBuffer(queue, res_buff, CL_TRUE, 0, sizeof(float)*4,
result, 0, NULL, NULL);
if(err < 0) {
perror("Couldn't enqueue the read buffer command");
exit(1);
}

/* Test the result */
if((result[0] == correct[0]) && (result[1] == correct[1])
&& (result[2] == correct[2]) && (result[3] == correct[3])) {
printf("Matrix-vector multiplication successful.\n");
}
else {
printf("Matrix-vector multiplication unsuccessful.\n");
}

/* Deallocate resources */
clReleaseMemObject(mat_buff);
clReleaseMemObject(vec_buff);
clReleaseMemObject(res_buff);
clReleaseKernel(kernel);
clReleaseCommandQueue(queue);
clReleaseProgram(program);
clReleaseContext(context);

getchar();
return 0;
}

the clBuildProgram gave error that it can't find stdio.h.

Also, here are the warnings:

'cl2.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\OpenCL.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\advapi32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\msvcrt.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\sechost.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\rpcrt4.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\sspicli.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\cryptbase.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\msvcr100d.dll', Symbols loaded.
'cl2.exe': Loaded 'C:\Windows\SysWOW64\IntelOpenCL32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86\intelocl.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9 a1e18e3b_9.0.30729.4974_none_50940634bcb759cb\msvc p90.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9 a1e18e3b_9.0.30729.4974_none_50940634bcb759cb\msvc r90.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\opengl32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\user32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\lpk.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\usp10.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\glu32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\ddraw.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\dciman32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\setupapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\cfgmgr32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\oleaut32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\ole32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\devobj.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\dwmapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\imm32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\msctf.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\ProgramData\Browser Manager\2.5.976.107\{c16c1ccb-7046-4e5c-a2f3-533ad2fec8e8}\mngr.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\shell32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\shlwapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\version.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\imagehlp.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\psapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\nvinit.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\profapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\NVIDIA Corporation\coprocmanager\detoured.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\NVIDIA Corporation\coprocmanager\Nvd3d9wrap.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\NVIDIA Corporation\coprocmanager\nvdxgiwrap.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86\clang_compiler.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86\task_executor.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86\tbb.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\dbghelp.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86\cpu_device.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\igdrcl32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\nvcuda.dll', Binary was not built with debug information.
'cl2.exe': Unloaded 'C:\Windows\SysWOW64\nvcuda.dll'
'cl2.exe': Loaded 'C:\Windows\SysWOW64\nvopencl.dll', Binary was not built with debug information.
'cl2.exe': Loaded 'C:\Windows\SysWOW64\ws2_32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\nsi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\nvapi.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\wintrust.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\crypt32.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\msasn1.dll', Cannot find or open the PDB file
'cl2.exe': Loaded 'C:\Windows\SysWOW64\igdfcl32.dll', Cannot find or open the PDB file
'cl2.exe': Unloaded 'C:\Windows\SysWOW64\igdfcl32.dll'
The program '[6324] cl2.exe: Native' has exited with code 1 (0x1).

Please show me how to fix that.

Best Regards