Include OpenCL headers on Windows with AMD GPU-CodePudding

I'm trying to compile an OpenCL program on my Windows machine. What I first found was using the #include <CL/cl.h> header, but it seems I don't have it installed.

So after looking around for a while, I found that people recommend using OCL_SDK_Light to include the headers and libraries on Windows with AMD GPU. I installed it, but as I'm not very used to C language, I've been having trouble including these headers in my file.

In the README of the OCL_SDK_Light, what's written is

This light SDK for OpenCL only installs the required component to compile an OpenCL program
It also creates the following environment variable OCL_ROOT which points to the installation path of this SDK
To include the headers and library in your project, you can then use the following
${OCL_ROOT}\include
${OCL_ROOT}\lib\x86
${OCL_ROOT}\lib\x86_64

But I don't understand the lines explaining how to use it in a project, which leads to me being at a loss for what to do.

How should I include the headers file I just downloaded ?

CodePudding user response：

To include the OpenCL headers in your project, you can add the following lines at the beginning of your program:

#include <stdio.h>
#include <CL/cl.h>

You will also need to link the OpenCL library when compiling your program. To do this, you can use the following command:

gcc -o program program.c -lOpenCL

You will also need to set the OCL_ROOT environment variable to point to the installation path of the OCL_SDK_Light. This can be done by adding the following line to your .bashrc or .zshrc file:

export OCL_ROOT="/path/to/OCL_SDK_Light"

Then, you can use the ${OCL_ROOT} variable in your compiler and linker flags to specify the location of the headers and libraries, like this:

gcc -o program program.c -I${OCL_ROOT}/include -L${OCL_ROOT}/lib/x86 -lOpenCL

Alternatively, you can directly specify the paths to the headers and libraries in your compiler and linker flags, like this:

gcc -o program program.c -I/path/to/OCL_SDK_Light/include -L/path/to/OCL_SDK_Light/lib/x86 -lOpenCL

Note that the -L flag should specify the path to the lib directory that contains the OpenCL.lib file, depending on your system's architecture (x86 or x86_64). You will also need to use the -l flag to link the OpenCL library.