With the new extraction method, we would need to provide an opencv. However, all of our tools that use opencv use an alternate version of OpenCV, so that would interfere.
This adds an artifact where opencv is statically linked into cscore, but wpiutil is a shared dependency. This solves some shared state hacks, and the extraction works so much better, so its worth making this change to allow that
- Build both debug and release binaries
- Append "d" to debug libraries in the style of opencv
- Split shared and static classifiers
- Add raspbian support
A hash is stored for each native library with the name libraryName.hash.
If the library is not found on the system search path, it is extracted to a cache directory.
Extracted libraries are named with the hash appended, so the library will not be
re-extracted if one with the same hash already exists.
Hashing without the hash file requires double traversing if the file is not in the cache,
but it is still faster than creating a new file in most cases. This won't be needed
after opencv is updated to provide a hash as well.
