def toolchainVersion() {
	if (project.hasProperty('testToolchain')) {
		return project.property('testToolchain').toString().toInteger()
	}
	return 17
}

project.afterEvaluate {
	subprojects { subproject ->
		afterEvaluate {
			if (subproject.plugins.hasPlugin(JavaPlugin.class)) {
				java {
					toolchain {
						languageVersion = JavaLanguageVersion.of(toolchainVersion())
					}
				}
				tasks.withType(JavaCompile).configureEach {
					options.encoding = "UTF-8"
					options.compilerArgs.add("-parameters")
					options.compilerArgs.addAll(["-Werror", "-Xlint:unchecked", "-Xlint:deprecation", "-Xlint:rawtypes", "-Xlint:varargs"]);
					options.release.set(17)
				}
			}
		}
	}
}