Godot: Scons does not detect X11

[CatsNipYummy]

Godot version:
major = 4
minor = 0
patch = 0
status = "dev"
module_config = ""
year = 2020

OS/device including version:
Ubuntu 18.04.4

Issue description:
Scons does not detect X11

Steps to reproduce:

1. Clone the repo
2. cd godot
3. scons3 -j4 platform=x11 (scons3="/usr/bin/env python3 $(which scons)")

Output:

scons: Reading SConscript files ...
Invalid target platform "x11".
The following platforms were detected:

    haiku
    linuxbsd
    server

Please run SCons again and select a valid platform: platform=<string>

But I have X11 installed. Here the output of my dpkg -l | grep xserver-xorg-core

ii xserver-xorg-core-hwe-18.04 2:1.20.5+git20191008-0ubuntu1~18.04.1 amd64 Xorg X server - core server

[Ev1lbl0w]

This commit seems to imply that x11 was renamed to linuxbsd.

But if that's the case, then the documentation has to be changed.

[Calinou]

I wonder if we should alias x11 to linuxbsd to prevent errors like this (and print a message telling the user x11 is now an alias for linuxbsd). Many third-party documentation websites will never be updated :slightly_frowning_face:

[CatsNipYummy]

@Ev1lbl0w That is how I got it to work. Ran it with platform=linuxbsd and everything went off fine.

[rcorre]

This should make it rather obvious:

The following platforms were detected:

        haiku
        linuxbsd
        server

Still, I somehow missed that and ended up finding this issue instead :man_facepalming: