}

    private void addLauncherOptions() {
        if (!includeLauncherOptions) {
            return;
        }

        MinimalJavaCompilerDaemonForkOptions forkOptions = spec.getCompileOptions().getForkOptions();
        if (forkOptions.getMemoryInitialSize() != null) {
            args.add("-J-Xms" + forkOptions.getMemoryInitialSize().trim());
        }
        if (forkOptions.getMemoryMaximumSize() != null) {

        JavaCompiler javaCompilerTool = getJavaCompiler().get();
        File toolchainJavaHome = javaCompilerTool.getMetadata().getInstallationPath().getAsFile();

        ForkOptions forkOptions = getOptions().getForkOptions();
        File customJavaHome = forkOptions.getJavaHome();
        if (customJavaHome != null) {
            JavaExecutableUtils.validateMatchingFiles(

            spec.getGroovyCompileOptions().setStubDir(dir);
        }

        String executable = getJavaLauncher().get().getExecutablePath().getAsFile().getAbsolutePath();
        spec.getCompileOptions().getForkOptions().setExecutable(executable);

        return spec;
    }

    private void configureCompatibilityOptions(DefaultGroovyJavaJointCompileSpec spec) {

    public void setFork(boolean fork) {
        this.fork = fork;
    }

    /**
     * Returns options for running the compiler in a child process.
     */
    @Nested
    public ForkOptions getForkOptions() {
        return forkOptions;
    }

    /**
     * Sets options for running the compiler in a child process.
     */
    public void setForkOptions(ForkOptions forkOptions) {

* link:{groovyDslPath}/org.gradle.api.tasks.compile.GroovyForkOptions.html#org.gradle.api.tasks.compile.GroovyForkOptions:jvmArgumentProviders[GroovyCompile.getGroovyOptions().getForkOptions().getJvmArgumentProviders()] - model Groovy compiler daemon command line arguments

Method <org.gradle.api.tasks.compile.CompileOptions.getExtensionDirs()> does not have raw return type assignable to org.gradle.api.provider.Property in (CompileOptions.java:0)
Method <org.gradle.api.tasks.compile.CompileOptions.getForkOptions()> does not have raw return type assignable to org.gradle.api.provider.Property in (CompileOptions.java:0)