Thank you for your prompt replies!
IMHO the reader in Calibre 4.0 is marvelous! I would love to have it on my El Capitan machines.
But I am afraid that I won't indeed be able to build Qt 5.13.0 from source on 10.11 since the highest El Capitan supports is 5.11. However, precompiled binaries of any Qt version can be downloaded from Qt sources.
I have three options now:
- Install all deps on 10.11 and build Calibre 4.0 from source.
I installed precompiled binaries of 5.11.3 from Qt sources on El Capitan. Now I am to build PyQt5 for Python 2.7 from source since I can't install it from wheels. I am only able to install PyQt5 for Python3 from wheels.
- Install all deps on 10.14 and build Calibre 4.0 from source in order to run on 10.11 then.
I downloaded and ran precompiled version of Calibre 4.0 for mac on 10.11 and it hanged with "Symbol not found: _getentropy" exception. So, I am not sure Calibre 4.0 runs if I built it from source on Mojave to run on El Capitan.
- Install all deps on Linux, set up 10.11 Virtual Box and build Calibre 4.0 from source.
If I configure all deps from sources.json on linux and set up 10.11 in a virtual box what are the chances Calibre 4.0 can be built?
I have linux on a non-apple machine (installing 10.11 in a virtual box will be a hack per se; I had some experience with Yosmite and Mavericks). El Capitan and Mojave are on different apple machines.