Bug 483634 – =media-libs/opencv-2.4.5 with >=dev-util/nvidia-cuda-toolkit-5.5 - The following variables are used in this project, but they are set to NOTFOUND. -/ /- CUDA_npp_LIBRARY (ADVANCED)

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Alan Smithee 2013-09-04 20:10:38 UTC]

If ones try to install media-libs/opencv-2.4.5 with >=dev-util/nvidia-cuda-toolkit-5.5 (currently ~arch) installed, you will experience the following cmake error:

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
CUDA_npp_LIBRARY (ADVANCED)
    linked by target "opencv_core" in directory /var/tmp/portage/media-libs/opencv-2.4.5/work/opencv-2.4.5/modules/core
    linked by target "opencv_gpu" in directory /var/tmp/portage/media-libs/opencv-2.4.5/work/opencv-2.4.5/modules/gpu
    linked by target "opencv_nonfree" in directory /var/tmp/portage/media-libs/opencv-2.4.5/work/opencv-2.4.5/modules/nonfree

-- Configuring incomplete, errors occurred!

According to the opencv guys the version is not compatible:
http://answers.opencv.org/question/14326/problem-of-building-opencv-245-with-cuda-55-rc/

this incompatibility should be reflected in the ebuild, what is not the case:
cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2 )

[Comment 1 Tom Wijsman (TomWij) (RETIRED) 2013-09-05 09:43:28 UTC]

Please comment with the output of `emerge --info` and attach the full build log.

[Comment 2 Jeroen Roovers (RETIRED) 2013-09-06 13:09:45 UTC]

"Compilation issues with CUDA 5.5 will be fixed in 2.4 branch and in the next release (2.4.6). 

OpenCV 2.4.5 can be built only with CUDA 4.2 or 5.0."

[Comment 3 Andreas K. Hüttel 2013-09-06 16:40:09 UTC]

Please update to opencv-2.4.6.1 where this is fixed.

[Comment 4 Andreas K. Hüttel 2013-09-06 16:40:34 UTC]

PS. dependencies have been fixed in 2.4.5