Clone this repository and it's submodules:

git clone --recurse-submodules https://github.com/godotengine/godot-ios-plugins

You might require to update godot submodule in case you require latest (unreleased) Godot changes. To do this run:

cd godot
git fetch
git checkout origin/<branch you want to use>

Alternatively you can use pre-extracted Godot headers that will be provided with release tag at Releases page.
To do this clone this repo without submodules:

git clone https://github.com/godotengine/godot-ios-plugins

Then place extracted Godot headers in godot directory.
If you choose this option you can skip next step to genarate of Godot headers.

To generate Godot headers you need to run compilation command inside godot submodule directory. Example:

scons platform=iphone target=debug

You don't have to wait for full engine compilation as header files are generated first, so once an actual compilation starts you can stop this command.

Running

scons target=<debug|release|release_debug> arch=<arch> simulator=<no|yes> plugin=<plugin_name> version=<3.2|4.0>

will generate .a static library for chosen target.
Do note, that Godot's default debug export template is compiled with release_debug target.

Run ./scripts/generate_static_library.sh <plugin_name> <debug|release|release_debug> <godot_version> to generate fat static library with specific configuration.

The result .a binary will be stored in bin folder.

Run ./scripts/generate_xcframework.sh <plugin_name> <debug|release|release_debug> <godot_version> to generate xcframework with specific configuration. xcframework allows plugin to support both arm64 device and arm64 simulator.

The result .xcframework will be stored in bin folder as well as intermidiate .a binaries.