Re: [PATCH] [WIP] Port feature/native-comp to Windows.

[Nicolas Bértolo]

> Does Emacs already support comparable functionality on GNU/Linux?

It is not necessary unless we want users to be able to install an Emacs
compiled with native compilation enabled and have it run even if libgccjit
is not installed in their system.

In GNU/Linux once Emacs has been built with support for a library,
it requires it to be installed. Otherwise it fails with a message like this:

emacs: error while loading shared libraries: libpng16.so.16: cannot
open shared object file: No such file or directory

If I understand the code correctly, only the Windows build supports
dynamically testing for a library and disabling the features that depend
on it if it is not installed.