Cross-compiling existing applications and libraries

Question

I'd like to cross-compile an existing OpenCV-based application for the Jevois-A33.  This application requires a handful of libraries, which I'll also need to compile.  The end result being a binary (or a couple binaries) that will run on the Jevois independent of the jevois-daemon (the code is structured such that I can't easily incorporate it in as a Jevois module).

I know this is theoretically possible from within buildroot, but it appears onerous to do so.  Some build systems (e.g. Yocto) support a standalone SDK which allows cross-compiling quite easily; is there a way to do this with Jevois' buildroot?  Alternatively, are there other options for the rootfs, such as Yocto or an Ubuntu setup?

Answer 1

Yes, we have many examples in the CMakeLists.txt of jevoisbase:

https://github.com/jevois/jevoisbase/blob/master/CMakeLists.txt

Usually the easiest is to figure out which .cpp files need to be compiled. Then just add them as source files in your JeVois module's CmakeLists.txt - that will get you both native and cross compilation for free.

Also see here for step-by-step instructions:

http://jevois.org/tutorials/ProgrammerDlib.html