Make Luanti buildable for iOS (iPhoneSimulator) with ANGLE and basic CI.

doc/compiling/README.md

@@ -24,6 +24,7 @@ General options and their default values:
     PRECOMPILED_HEADERS_PATH=  - Path to a file listing all headers to precompile (default points to src/precompiled_headers.txt)
     USE_SDL2=TRUE              - Build with SDL2; Enables IrrlichtMt device SDL2
     USE_SDL2_STATIC=TRUE       - Links with SDL2::SDL2-static instead of SDL2::SDL2
+    USE_ANGLE=TRUE             - Build with Google ANGLE; IrrlichMt device SDL2 on iOS
     ENABLE_CURL=ON             - Build with cURL; Enables use of online mod repo, public serverlist and remote media fetching via http
     ENABLE_CURSES=ON           - Build with (n)curses; Enables a server side terminal (command line option: --terminal)
     ENABLE_GETTEXT=ON          - Build with Gettext; Allows using translations

doc/compiling/ios.md

@@ -0,0 +1,34 @@
+# Compiling for iOS
+
+THIS DOCUMENT IS NOT FINISHED!!!
+
+## Requirements
+
+- macOS
+- [Homebrew](https://brew.sh/)
+- XCode
+- iOS/IPhoneSimulator SDK
+- iOS Simulator for newest iOS is supported only on Apple Silicon deviecs.
+
+Install dependencies with homebrew:
+
+```
+brew install cmake git
+```
+
+## Generate Xcode project
+
+This script will download and build all requested dependencies for iOS or IPhoneSimulator and generate Xcode project for Luanti.
+
+```bash
+/path/to/ios_build_with_deps.sh https://github.com/luanti-org/luanti.git master ../luanti_ios ../luanti_ios_deps Debug "iPhoneSimulator" "18.2" "all"
+```
+
+### Build and Run
+
+* Open generated Xcode project
+* Select scheme `luanti`
+* Configure signing Team etc.
+* Run Build command
+* Open application from `build/build/Debug/` directory or run it from Xcode
+