Add support for X11 under Cygwin - #15995
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Use SDL_THREAD_WINDOWS to prevent issue with testautomation Use SDL_FILESYSTEM_WINDOWS to prevent issue with testfilesystem [sdl-ci-filter cygwin] [sdl-ci-filter msys2-*] [sdl-ci-filter msvc-*] [sdl-ci-filter ngage]
Most of the code is from Cygwin's SDL3-3.4.8-1.src.patch [sdl-ci-filter cygwin] [sdl-ci-filter msys2-*] [sdl-ci-filter msvc-*] [sdl-ci-filter ngage]
[sdl-ci-filter cygwin] [sdl-ci-filter msys2-*] [sdl-ci-filter msvc-*] [sdl-ci-filter ngage]
[sdl-ci-filter cygwin] [sdl-ci-filter msys2-*] [sdl-ci-filter msvc-*] [sdl-ci-filter ngage]
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The "Part 2 of adding X11 support to Cygwin DLL names" commit contains code from Cygwin's SDL3-3.4.8-1.src.patch.
This contribution does not contain code from other sources, including code generated by a Large Language Model ("AI").
I have no plans to ever say this PR is ready for review; it is for others to look at and use.
I have forgotten how to use X11 correctly; so, I am not sure the X11 terminal lockup issue I see is a real problem or user error. I have decided that spending more time on the X11 version is no longer what I wish to do. I will continue my work on Cygwin/Win and Msys.
Move a lot of code to a new macro called "do_WIN_LIKE_steps"; added and changed guards for X11 support.
Description
Used SDL_THREAD_WINDOWS to prevent issue with testautomation.
And, used SDL_FILESYSTEM_WINDOWS to prevent issue with testfilesystem.
Added code that allows SDL_X11=NO to prevent an X11 build from being done.
Edited the CI to install the X11 Cygwin packages.
Existing Issue(s)