[Bf-cycles] Cycles does not build with CUDA

[Brecht Van Lommel]

Hi,

I've changed the build system to remove the CUDA_LIBRARIES variable
now. It's actually not needed anymore, the cuda library is used at
runtime only.

Brecht.

On Thu, Aug 25, 2011 at 11:46 PM, Robert Feld
<robertmfeld at googlemail.com> wrote:
> Hi Dan,
>
> finally I found the problem and worked around it...
>
>> You have /usr/local/cuda/lib in your lib search path?
> After putting /usr/local/cuda/lib in my Lib search path (via the
> recommended way of creating a .conf file in /etc/ld.so.conf.d/) I still
> could not compile Cycles with CUDA.
>
> I found that CMake is looking for the libcuda.so which in my Ubuntu
> 11.04 (with CUDA Toolkit installed)  is not present in /usr/local/cuda/lib.
>
> I however found it in /usr/lib/nvidia-current (it is part of the
> official NVIDIA driver package for Ubuntu) and added that path to
> intern/cycles/cmake/external_libs.cmake because it does not use standard
> lib paths because of the parameter NO_DEFAULT_PATH in the cmake file.
>
> (svn diff)
> --- intern/cycles/cmake/external_libs.cmake    (Revision 39655)
> +++ intern/cycles/cmake/external_libs.cmake    (Arbeitskopie)
> @@ -94,10 +94,16 @@
>      set(CYCLES_CUDA_ARCH sm_10 sm_11 sm_12 sm_13 sm_20 sm_21 CACHE
> STRING "CUDA architectures to build for")
>      set(CYCLES_CUDA_MAXREG 24 CACHE STRING "CUDA maximum number of
> register to use")
>
> -    find_library(CUDA_LIBRARIES NAMES cuda PATHS ${CYCLES_CUDA}/lib
> ${CYCLES_CUDA}/lib/Win32 NO_DEFAULT_PATH)
> +    find_library(CUDA_LIBRARIES NAMES cuda PATHS
> /usr/lib/nvidia-current ${CYCLES_CUDA}/lib ${CYCLES_CUDA}/lib64
> ${CYCLES_CUDA}/lib/Win32 NO_DEFAULT_PATH)
>
> That worked for me. However I am not sure it is the best solution ...
>
> I would consider this to be a bug in the build system. How do I report it?
>
> Kind regards,
> Robert
>
>
>> Dan
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