macOS support, tesseract 4.0.0

hamchapman commented 6 years ago

This is a big PR and, as such, will probably be difficult to review.

Here's a list of the the high level changes I can remember:

added macOS support
updated version of tesseract to 4.0.0 (using roughly the latest HEAD)
leptonica is now included as a git submodule
a fork of libtiff-ios is being used as part of the macOS support: https://github.com/hamchapman/libtiff-ios
introduced a new Tests-macOS project, which almost entirely reflects that Tests-iOS one
- the two Tests-* projects share almost all of their code, which lives in the Tests directory

Things left to do:

[ ] Update README
[ ] Check that the image orientation tests still exist for iOS and still work (I couldn't get them to work for macOS, although might have a lead on that now)
[ ] Do a documentation pass to make sure everything is still documented to the same standard as it was
[ ] (Potentially) clean up git history as it's a bit...raw 😁

gali8 commented 5 years ago

@hamchapman thanks for your work, can you please resolve conflicts? Thanks. Please be sure that everything will work on iOS too.

hamchapman commented 5 years ago

Replaced by #401

gali8 / Tesseract-OCR-iOS