Configuration

The build files are static and shared across all GMP plugins. Any plugin-specific build customization is handled through the following configuration files:

.
├-- addon/
│   ├-- ?.gradle.kts                       # Any extra addon-specific Gradle configuration (configured in
│   │                                      # addon/config/addon-build.properties) for the plugin goes here
│   └-- config/
│       └-- addon-build.properties         # Gradle build customization for addon module
│
├-- android/
│   ├-- android-build.gradle.kts           # Android build configuration
│   ├-- ?.gradle.kts                       # Any extra Android-specific Gradle configuration (configured in
│   │                                      # android/config/android-build.properties) for the plugin goes here
│   └-- config/
│       └-- android-build.properties       # Gradle build customization for android module
│
├-- common/
│   ├-- config/
│   │   ├-- build.properties               # Build-related property configuration & customization
│   │   ├-- godot.properties               # Godot version configuration
│   │   └-- plugin.properties              # Plugin configuration
│   │
│   └-- gradle/
│       └-- libs.versions.toml             # Android dependencies and versions
│
└-- ios/
    └-- config/
        ├-- ios.properties                 # iOS configuration
        ├-- ios-build.properties           # Gradle build customization for ios module
        └-- spm_dependencies.json          # SPM dependency configuration

Common Configuration

The common/config/plugin.properties file contains core plugin settings:

# Plugin identification
pluginNodeName=...                # Name of the plugin node in Godot (e.g. MyPlugin)
pluginModuleName=...              # Snake-case module name for native symbols (e.g. my_plugin)
pluginPackage=...                 # Fully-qualified Java/Kotlin package (e.g. org.godotengine.plugin.myplugin)
pluginVersion=1.0                 # Plugin version

The common/config/godot.properties file contains core Godot version settings:

# Godot configuration
godotVersion=4.6                  # Target Godot version
godotReleaseType=stable           # Release type: stable, dev6, beta3, rc1, etc.

The common/config/build.properties file contains Gradle build-related property settings. The gradleProjectName key is required. Extra properties and Gradle scripts that apply only to the root project use a root. prefix:

gradleProjectName=godot-*-plugin

# Extra properties set on the root project only
root.extra.anotherProperty=property value

# Extra Gradle scripts applied to the root project only
root.gradle.another=another.gradle.kts

Per-module extra properties and scripts are configured in each module's own *-build.properties file (see Build Customization section below).

Key Properties:

Build Customization

Plugin-specific build customizations can be configured in the following files.

common/config/build.properties for root-project customizations. The root. prefix scopes each entry to the root project only:

# Set plugin-specific extra properties on the root project
#root.extra.myProperty=value

# Configure plugin-specific Gradle scripts for the root project
#root.gradle.extraGradle=extra.gradle.kts

addon/config/addon-build.properties for addon-module build customizations:

# Set plugin-specific extra properties for addon module
#extra.myProperty=value

# Configure plugin-specific Gradle scripts for addon module
#gradle.extraGradle=extra.gradle.kts

android/config/android-build.properties for android-module build customizations:

# Set plugin-specific extra properties for android module
#extra.myProperty=value

# Configure plugin-specific Gradle scripts for android module
#gradle.extraGradle=extra.gradle.kts

ios/config/ios-build.properties for ios-module build customizations:

# Set plugin-specific extra properties for ios module
#extra.myProperty=value

# Configure plugin-specific Gradle scripts for ios module
#gradle.extraGradle=extra.gradle.kts

Each extra.* key sets a Gradle extra property on the corresponding module's project. Each gradle.* key applies the named Gradle script file to that module via project.apply(from = …). Extra scripts are resolved relative to the repository root.

Local Configuration

Create common/local.properties to configure machine-specific paths. This file is gitignored and must be created locally.

Android SDK Location

# Windows
sdk.dir=C\:\\Users\\YourUsername\\AppData\\Local\\Android\\Sdk

# macOS/Linux
sdk.dir=/Users/YourUsername/Library/Android/sdk

# Linux (alternate)
sdk.dir=/usr/lib/android-sdk

Godot Directory (iOS — optional)

By default, the iOS build scripts download and use the Godot source from ios/godot/ inside the project. If you want to use a Godot source tree located elsewhere on your machine (e.g. to share it across multiple plugin projects), set godot.dir in local.properties:

# Use a shared Godot source directory outside the project
godot.dir=/path/to/your/shared/godot

When godot.dir is not set, the build uses the ios/godot/ directory. The path supports ~ and environment variable expansion.

Godot Android Library (AAR — optional)

By default, the Godot Android AAR libary file is expected to be placed inside android/libs/ directory inside the project. If you want to use a location elsewhere on your machine (e.g. to share it across multiple plugin projects), set lib.dir in local.properties:

# Use a shared Godot AAR library directory outside the project
lib.dir=/path/to/your/shared/aar

When lib.dir is not set, the build uses the android/libs/ directory. The path supports ~ and environment variable expansion.

iOS Configuration

The ios/config/ios.properties file contains iOS-specific settings:

# iOS deployment target
platform_version=14.3

# Swift language version (required - must match your Xcode project)
swift_version=5.9

# iOS system framework dependencies (comma-separated)
frameworks=Foundation.framework,...

# Embedded iOS external framework dependencies (comma-separated; may be empty)
# Use this for vendored or prebuilt xcframeworks that are NOT managed by SPM.
# SPM packages should be declared in spm_dependencies.json instead.
embedded_frameworks=res://ios/framework/*.xcframework,...

# Linker flags (comma-separated; may be empty)
flags=-ObjC,-Wl,...

The frameworks, embedded_frameworks, and flags values are comma-separated lists. The build system parses them into typed lists at configuration time (IosConfig.kt) - blank entries are ignored. Values are used as-is for token replacement in GDScript templates and passed directly to xcodebuild.

GDScript templates may reference the following tokens for iOS values set in ios.properties and spm_dependencies.json:

The @spmDependencies@ token produces GDScript dictionary literals with StringName keys and no outer brackets (see IosConfig SPM Dependencies for the exact format).

SPM dependencies are configured in the ios/config/spm_dependencies.json file in the following format:

[
  {
    "url": "https://github.com/Alamofire/Alamofire",
    "version": "5.8.1",
    "products": [
      "Alamofire",
      "AlamofireImage"
    ]
  },
  {
    "url": "https://github.com/kishikawakatsumi/KeychainAccess",
    "version": "4.2.2",
    "products": [
      "KeychainAccess"
    ]
  }
]

If the plugin has no SPM dependencies:

[

]