C Specification

To creates a program object for a context and load source code into that object, call the function

cl_program clCreateProgramWithSource(
    cl_context context,
    cl_uint count,
    const char** strings,
    const size_t* lengths,
    cl_int* errcode_ret);


  • context must be a valid OpenCL context.

  • strings is an array of count pointers to optionally null-terminated character strings that make up the source code.

  • lengths argument is an array with the number of chars in each string (the string length). If an element in lengths is zero, its accompanying string is null-terminated. If lengths is NULL, all strings in the strings argument are considered null-terminated. Any length value passed in that is greater than zero excludes the null terminator in its count.

  • errcode_ret will return an appropriate error code. If errcode_ret is NULL, no error code is returned.


The source code specified by strings will be loaded into the program object.

The devices associated with the program object are the devices associated with context. The source code specified by strings is either an OpenCL C program source, header or implementation-defined source for custom devices that support an online compiler. OpenCL C++ is not supported as an online-compiled kernel language through this interface.

clCreateProgramWithSource returns a valid non-zero program object and errcode_ret is set to CL_​SUCCESS if the program object is created successfully. Otherwise, it returns a NULL value with one of the following error values returned in errcode_ret:

  • CL_​INVALID_​CONTEXT if context is not a valid context.

  • CL_​INVALID_​VALUE if count is zero or if strings or any entry in strings is NULL.

  • CL_​OUT_​OF_​RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.

  • CL_​OUT_​OF_​HOST_​MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.

See Also

Document Notes

For more information, see the OpenCL Specification

This page is extracted from the OpenCL Specification. Fixes and changes should be made to the Specification, not directly.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.