Unify bits, android_arch, macos_arch ios_arch into arch, support non-x86

Unify arguments and add support for ARM64 and RV64 Linux

Author: aaronfranke

.github/workflows/ci.yml

@@ -13,47 +13,48 @@ jobs:
             os: ubuntu-18.04
             platform: linux
             artifact-name: godot-cpp-linux-glibc2.27-x86_64-release
-            artifact-path: bin/libgodot-cpp.linux.release.64.a
+            artifact-path: bin/libgodot-cpp.linux.release.x86_64.a
 
           - name: 🐧 Linux (GCC, Double Precision)
             os: ubuntu-18.04
             platform: linux
             artifact-name: godot-cpp-linux-glibc2.27-x86_64-double-release
-            artifact-path: bin/libgodot-cpp.linux.release.64.a
+            artifact-path: bin/libgodot-cpp.linux.release.x86_64.a
             flags: float=64
 
           - name: 🏁 Windows (x86_64, MSVC)
             os: windows-2019
             platform: windows
             artifact-name: godot-cpp-windows-msvc2019-x86_64-release
-            artifact-path: bin/libgodot-cpp.windows.release.64.lib
+            artifact-path: bin/libgodot-cpp.windows.release.x86_64.lib
 
           - name: 🏁 Windows (x86_64, MinGW)
             os: windows-2019
             platform: windows
             artifact-name: godot-cpp-linux-mingw-x86_64-release
-            artifact-path: bin/libgodot-cpp.windows.release.64.a
+            artifact-path: bin/libgodot-cpp.windows.release.x86_64.a
             flags: use_mingw=yes
 
           - name: 🍎 macOS (universal)
             os: macos-11
             platform: osx
             artifact-name: godot-cpp-macos-universal-release
             artifact-path: bin/libgodot-cpp.osx.release.universal.a
-            flags: macos_arch=universal
+            flags: arch=universal
 
           - name: 🤖 Android (arm64)
             os: ubuntu-18.04
             platform: android
             artifact-name: godot-cpp-android-arm64-release
-            artifact-path: bin/libgodot-cpp.android.release.arm64v8.a
-            flags: android_arch=arm64v8
+            artifact-path: bin/libgodot-cpp.android.release.arm64.a
+            flags: arch=arm64
 
           - name: 🍏 iOS (arm64)
             os: macos-11
             platform: ios
             artifact-name: godot-cpp-ios-arm64-release
             artifact-path: bin/libgodot-cpp.ios.release.arm64.a
+            flags: arch=arm64
 
     steps:
       - name: Checkout

README.md

@@ -42,12 +42,15 @@ so formatting is done before your changes are submitted.
 
 ## Getting Started
 
-It's a bit similar to what it was for 3.x but also a bit different. This new approach is much more akin to how core Godot modules are structured.
+It's a bit similar to what it was for 3.x but also a bit different.
+This new approach is much more akin to how core Godot modules are structured.
 
 Compiling this repository generates a static library to be linked with your shared lib,
 just like before.
 
-To use the shared lib in your Godot project you'll need a `.gdextension` file, which replaces what was the `.gdnlib` before. Follow the example:
+To use the shared lib in your Godot project you'll need a `.gdextension`
+file, which replaces what was the `.gdnlib` before.
+Follow [the example](test/demo/example.gdextension):
 
 ```ini
 [configuration]
@@ -56,15 +59,17 @@ entry_symbol = "example_library_init"
 
 [libraries]
 
-linux.64.debug = "bin/libgdexample.linux.debug.64.so"
-linux.64.release = "bin/libgdexample.linux.release.64.so"
-windows.64.debug = "bin/libgdexample.windows.debug.64.dll"
-windows.64.release = "bin/libgdexample.windows.release.64.dll"
-macos.debug = "bin/libgdexample.debug.framework"
-macos.release = "bin/libgdexample.release.framework"
+macos.debug = "bin/libgdexample.osx.debug.framework"
+macos.release = "bin/libgdexample.osx.release.framework"
+windows.debug.x86_64 = "bin/libgdexample.windows.debug.x86_64.dll"
+windows.release.x86_64 = "bin/libgdexample.windows.release.x86_64.dll"
+linux.debug.x86_64 = "bin/libgdexample.linux.debug.x86_64.so"
+linux.release.x86_64 = "bin/libgdexample.linux.release.x86_64.so"
+# Repeat for other architectures to support arm64, rv64, etc.
 ```
 
-The `entry_symbol` is the name of the function that initializes your library. It should be similar to following layout:
+The `entry_symbol` is the name of the function that initializes
+your library. It should be similar to following layout:
 
 ```cpp
 extern "C" {