OpenCV package fails when added to rootfs

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1

Hi,

This used to work, but seems to have stopped. The opencv packaged shipped with openembedded cannot be installed onto a rootfs. It fails with

log_check: There were error messages in the logfile

log_check: Matched keyword: [Cannot find package]
Collected errors:

  • Cannot find package opencv.
  • export D=/exports/john_tmp/built/rootfs

Im not experienced with BB to be able to fix this, as everything else in the recipe looks fine to me. Can someone please take a look at this?

Thanks

John

2

The opencv recipe will not generate an 'opencv' packages, as that will be fairly useless since opencv is a library. To include the opencv libs you can do a number of things:

1) include a package that links against an opencv lib, shlib deps will pull libcv<something> in automagically
2) include 'opencv-apps'
3) include 'opencv-samples'

not that 2) and 3) are the same as 1).

Speaking about opencv, does anyone know how to *cross*-compile opencv with octave support?

regards,

Koen

3

That should have read "note", not "not".

regards,

koen

4

Hi,

This used to work, but seems to have stopped. The opencv packaged shipped with openembedded cannot be installed onto a rootfs. It fails with

log_check: There were error messages in the logfile

log_check: Matched keyword: [Cannot find package]
Collected errors:

  • Cannot find package opencv.
  • export D=/exports/john_tmp/built/rootfs

Im not experienced with BB to be able to fix this, as everything else in the recipe looks fine to me. Can someone please take a look at this?

The opencv recipe will not generate an ‘opencv’ packages, as that will be fairly useless since opencv is a library. To include the opencv libs you can do a number of things:

  1. include a package that links against an opencv lib, shlib deps will pull libcv in automagically
  2. include ‘opencv-apps’
  3. include ‘opencv-samples’

not that 2) and 3) are the same as 1).

Thanks!

This answer also clears up a big piece of OE logic that I was not understanding.

Regards

John

5

Btw, how to install the opencv and opencv samples from OE into angstrom?

6

Btw, how to install the opencv and opencv samples from OE into angstrom?

'opkg update ; opkg install opencv-samples'. It doesn't install datafiles like haarcascades, but if you download a haarcascade manually you can run the facedetect sample: OpenCV facedetect running on the beagleboard | The facedetec… | Flickr

regards,

Koen