C FreeOCL compiling errors

[notooth]

Hi,

Has anyone tried to use freeocl yet? I got errors when compiling its header:

#include <CL/cl.hpp>

$ gcc48 cldemo.cpp -lstdc++
/tmp//cctiUYnu.o: In function `cl::detail::ReferenceHandler<_cl_context*>::release(_cl_context*)':
cldemo.cpp: (.text._ZN2cl6detail16ReferenceHandlerIP11_cl_contextE7releaseES3_[_ZN2cl6detail16ReferenceHandlerIP11_cl_contextE7releaseES3_]+0x14): undefined reference to `clReleaseContext'
/tmp//cctiUYnu.o: In function `cl::detail::ReferenceHandler<_cl_command_queue*>::release(_cl_command_queue*)':
cldemo.cpp: (.text._ZN2cl6detail16ReferenceHandlerIP17_cl_command_queueE7releaseES3_[_ZN2cl6detail16ReferenceHandlerIP17_cl_command_queueE7releaseES3_]+0x14): undefined reference to `clReleaseCommandQueue'
collect2: error: ld returned 1 exit status

Please help.

 

[SirDice]

It'll probably help if you link your executable to libOpenCL (-lOpenCL). You may need to add -L/usr/local/lib too.

 

[notooth]

Hi SirDice,

I can compile it now, but I got an error when running the output file:

$ gcc48 cldemo.cpp -lstdc++ -lOpenCL -L/usr/local/lib
$ ./a.out
sysctl: unknown oid 'kernel.ostype': No such file or directory

 

[SirDice]

That's because the FreeOCL code doesn't understand FreeBSD and assumes you're using Linux. You will need to have this fixed upstream.

 

[notooth]

Can you tell me specifically what I should do?

 

[SirDice]

Contact whoever wrote FreeOCL and get them to properly support FreeBSD in their code.