/usr/bin/.portable is installed unconditionally

[Piraty]

Describe the bug

cmake unconditionally installs /usr/bin/.portable

<...>
-- Installing: /destdir/warzone2100-4.2.7/usr/share/locale/zh_TW/LC_MESSAGES/warzone2100.mo
-- Installing: /destdir/warzone2100-4.2.7/usr/bin/warzone2100
-- Installing: /destdir/warzone2100-4.2.7/usr/bin/.portable
-- Installing: /destdir/warzone2100-4.2.7/usr/share/doc/warzone2100/copyright
<...>

Expected behavior
don't install hidden files to /usr/bin/

Your System:

• OS: Linux (Void Linux)
• Game version: 4.2.7 (https://github.com/void-linux/void-packages/blob/ba482268b0e6282ac012b629bbb6bba4b32e410e/srcpkgs/warzone2100/template)

Additional context

There was a funny bug side-effect encountered today on Void Linux.
Given a user has warzone2100-4.2.7 and keepassxc installed, keepassxc was tricked into portable mode by checking for .portable in it's execdir (/usr/bin/) and tried to load itsportable configuration file, then assumed at $execdir/config/keepassxc.ini (thus: /usr/bin/config/keepassxc.ini, which is nonexistent, obviously).

• relevant commit: e3cfba0
• relevant PR: 3f9df62#diff-148715d6ea0c0ea0a346af3f6bd610d010d490eca35ac6a9b408748f7ca9e3f4R601

[past-due]

Hmm. That particular file is set up as a separate PortableConfig component.

Does adding EXCLUDE_FROM_ALL to the end of that install line fix the problem for you?

[Piraty]

yes