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    <p>Short answer: <a href="https://developer.apple.com/library/mac/#documentation/Performance/Conceptual/OpenCL_MacProgGuide/XCodeHelloWorld/XCodeHelloWorld.html">https://developer.apple.com/library/mac/#documentation/Performance/Conceptual/OpenCL_MacProgGuide/XCodeHelloWorld/XCodeHelloWorld.html</a></p> <p>Long answer for command liners:</p> <p>With a recent Xcode (and Lion or higher), you don't even need to call <code>clCreateProgramWithSource</code>, just write your kernel and call it from your app, there are some additional compiling steps needed though.</p> <p>I'm taking the OpenCL Hello World example from Apple here using default compiler flags (see <a href="https://developer.apple.com/library/mac/#documentation/Performance/Conceptual/OpenCL_MacProgGuide/ExampleHelloWorld/Example_HelloWorld.html">https://developer.apple.com/library/mac/#documentation/Performance/Conceptual/OpenCL_MacProgGuide/ExampleHelloWorld/Example_HelloWorld.html</a>) and showing the steps Xcode would do in the background.</p> <p>To get you started, do a:</p> <pre><code>/System/Library/Frameworks/OpenCL.framework/Libraries/openclc -x cl -cl-std=CL1.1 -cl-auto-vectorize-enable -emit-gcl mykernel.cl </code></pre> <p>This will create 2 files, mykernel.cl.h and mykernel.cl.c (and mykernel.cl.c does all the magic of loading your kernel into the app). Next you'll need to compile the kernel:</p> <pre><code>/System/Library/Frameworks/OpenCL.framework/Libraries/openclc -x cl -cl-std=CL1.1 -Os -triple i386-applecl-darwin -emit-llvm-bc -o mykernel.cl.i386.bc mykernel.cl /System/Library/Frameworks/OpenCL.framework/Libraries/openclc -x cl -cl-std=CL1.1 -Os -triple x86_64-applecl-darwin -emit-llvm-bc -o mykernel.cl.x86_64.bc mykernel.cl /System/Library/Frameworks/OpenCL.framework/Libraries/openclc -x cl -cl-std=CL1.1 -Os -triple gpu_32-applecl-darwin -emit-llvm-bc -o mykernel.cl.gpu_32.bc mykernel.cl </code></pre> <p>And last but not least, build the app itself:</p> <pre><code>clang -c -Os -Wall -arch x86_64 -o mykernel.cl.o mykernel.cl.c clang -c -Os -Wall -arch x86_64 -o square.o square.c clang -framework OpenCL -o square mykernel.cl.o square.o </code></pre> <p>And that's it. You won't see any <code>clCreateProgramWithBinary</code> or <code>clCreateProgramWithSource</code> in Apple's sample code. Everything is done via mykernel.cl.c generated by <code>openclc</code>.</p>
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    1. POHow to set up Xcode to run OpenCL code, and how to verify the kernels before building
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    1. USNeXTCoder
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      1. VTUpMod
    1. COReally informative, thanks a lot!
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