GDNative lib ignores arm64 macos architecture

[DrMoriarty]

Godot version:

Godot 3.3.1-stable

OS/device including version:

MacOSX 10.15.7 (19H2)

Issue description:

I have this gdnlib file:

[general]

singleton=true
load_once=true
symbol_prefix="gamecenter_"
reloadable=false

[entry]

OSX.64="res://addons/gamecenter-osx/libgamecenter_universal.dylib"
OSX.arm64="res://addons/gamecenter-osx/libgamecenter_universal.dylib"

[dependencies]

OSX.64=[  ]
OSX.arm64=[  ]

When I open this file in Godot I see:

I can add arm64 manually (then arm64 lib appeared in editor):

When I exit from Godot and open this project again the arm64 library again disappears.

Steps to reproduce:
Just try to use GDNative library on MacOS with arm64 architecture.

Minimal reproduction project:

[Xrayez]

I think it's a feature which is currently not implemented yet in GDNative (see also #39943).

[DrMoriarty]

@naithar @bruvzg Hi! Do you know if anybody is working on this feature? I want to implement it but it may be faster to collaborate with someone.

[bruvzg]

Single OSX.64 entry with the universal library should work on both Intel and M1 macs.

And adding separate arm64 and x86-64 to the editor UI, should be as easy as changing these lines

godot/modules/gdnative/gdnative_library_editor_plugin.cpp

Lines 282 to 283 in 3b3a55c

	platform_osx.entries.push_back("64");
	platform_osx.entries.push_back("32");

32 can be removed, and 64 probably can be renamed to universal.

[bruvzg]

And adding separate arm64 and x86-64 to the editor UI, should be as easy as
32 can be removed, and 64 probably can be renamed to universal.

I have these changes as part of #46866 / #46860 PRs, which also add support for GDNative framework.

[naithar]

@naithar @bruvzg Hi! Do you know if anybody is working on this feature? I want to implement it but it may be faster to collaborate with someone.

Using a single universal .dylib file in any configuration should probably be enough for most cases, since macOS doesn't use same architecture for different targets, unlike iOS, where both device and simulator use arm64.

[DrMoriarty]

Thank you! Using OSX.64 was enough to build fat binary with arm64.

[aaronfranke]

@bruvzg Note: It's x86_64 not x86-64. Your PRs are correct though.

[akien-mga]

This was fixed by #46860.