>Christophe Lyon <christophe.lyon@...> writes:
> > Regarding your problems with ffmpeg, I'm sorry that I don't know how > cmake works, but after spending some time trying to understand why > cross-building fails, here are my remarks: > > - installing packages such as libavcodec-dev installs the version for > your host, not for your ARM target Hi Christophe, thanks for replay. ok I will take it into account. > - therefore, you should add ffmpeg to OpenCV, maybe using the 3rdparty > directory, but I don't know how it is supposed to be used I too don't know. Then Cross compiling is not so simple like this: http://processors.wiki.ti.com/index.php/Building_OpenCV_for_ARM_Cortex-A8 > - on my system, I have noticed that cmake says 'Could NOT find JPEG), > then "Media I/O: JPEG: libjpeg (ver 62)" and I can see that g++ is > called with -I<path-to-OpenCV>/3rdparty/libjpeg, which is confusing Same thing happens to me with FFMPEG > - similarly, it looks like cmake is calling pkg-config which most > probably queries the host, not the target FS > - you have to make sure that the build process will find or build all > the dependencies for ARM, which probably means it has to build ffmpeg > - I don't know if all these are peculiarities of cmake or OpenCV, but > it makes me wonder whether OpenCV is really supporting > cross-compilation? > - did you ask OpenCV community? I could see OpenCV community recomend other ways to do what I want. > > Sorry to ask more questions :) > > Christophe. Best regards. _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
