I have written a few OpenCL kernels in the last few years. My code works on Windows, Linux and OS X. It works on my MacBook Pro (NVIDIO GeForce GT 650M). It used to work on my Mac Pro (AMD ATI Radeon HD 5870), but after upgrading to Yosemite I get the error "cvms_element_build_from_source" on the call to clBuildProgram. I have all of the updates for OS X including the latest Xcode and command line utilities.
Yea i have the same problem too. In my case it seems to stem from the as_double() function for some reason (on code that worked perfectly on 10.9)
My OpenCL code calls mul_hi and that call is what is triggering the error. If I remove those calls, the program runs, albeit returning the wrong results. I see nothing that indicates that I need to add any options to the build or any pragmas to the source.
I found out that if you add this to your command line:
export CL_LOG_ERRORS="stdout"
Then run your program, you can see more information.
[CL_DEVICE_NOT_AVAILABLE] : OpenCL Error : Error: Build Program driver returned (517)
Break on OpenCLErrorBreak to debug.
OpenCL Warning : clBuildProgram failed: could not build program for 0x1021b00 (ATI Radeon HD 5870) (err:-2)
Break on OpenCLWarningBreak to debug.
[CL_BUILD_ERROR] : OpenCL Build Error : Compiler build log:
Error returned by cvms_element_build_from_source
I don't know why clGetProgramBuildInfo() did not return that. Hopefully I can figure out why it thinks the device is unavailable.
OpenCL kernel error: cvms_element_build_from_source
