Use the isfinite macro when available.

[tjni]

This is needed on M1 Macs, because its C library in libSystem no longer
includes the finite function in math.h.

Increases the minimum version of CMake so that CHECK_SYMBOL_EXISTS is
available.

[vfonov]

#include "config.h" in templates/EBTKS/SimpleArray.h will collide with other projects.

[tjni]

Thank you for your fast reply. So that you understand my background, I only have moderate experience with C/C++, and I am not familiar with the sorts of conflicts that can occur here. Would you be able to give me some suggestions that I can use as a starting point toward fixing this properly?

The main problem itself is that it seems finite does not exist in libc (found in libSystem.dylib) on M1 Macs.

[vfonov]

so, the EBTKS is used by https://github.com/BIC-MNI/N3 , https://github.com/BIC-MNI/inormalize and https://github.com/BIC-MNI/classify , all part of https://github.com/BIC-MNI/minc-toolkit-v2 . The change will need to be done to all of them to make sure that existence of isfinite is properly done. Also, all of them use their own config.h .