this.classesToCompile = spec.getClassesToCompile();
        this.destinationDir = spec.getDestinationDir();
        this.headerOutputDir = spec.getCompileOptions().getHeaderOutputDirectory();
        this.classBackupDir = spec.getClassBackupDir();
        this.shouldBackupFiles = classBackupDir != null;
        this.result = result;
        this.uniqueIndex = new AtomicLong();

            return rebuildAllCompiler.execute(spec);
        }
        File previousCompilationDataFile = Objects.requireNonNull(spec.getCompileOptions().getPreviousCompilationDataFile());
        if (!previousCompilationDataFile.exists()) {
            LOG.info("Full recompilation is required because no previous compilation result is available.");

        ForkingJavaCompileSpec forkingSpec = (ForkingJavaCompileSpec) spec;

        JavaInfo jvm = Jvm.forHome(((ForkingJavaCompileSpec) spec).getJavaHome());

        MinimalJavaCompilerDaemonForkOptions forkOptions = spec.getCompileOptions().getForkOptions();
        JavaForkOptions javaForkOptions = new BaseForkOptionsConverter(forkOptionsFactory).transform(forkOptions);
        javaForkOptions.setWorkingDir(daemonWorkingDir);

    }

    @Override
    protected DaemonForkOptions toDaemonForkOptions(T spec) {
        MinimalJavaCompilerDaemonForkOptions javaOptions = spec.getCompileOptions().getForkOptions();
        MinimalScalaCompileOptions compileOptions = spec.getScalaCompileOptions();
        MinimalScalaCompilerDaemonForkOptions forkOptions = compileOptions.getForkOptions();

        ContextAwareJavaCompiler compiler = compilerFactory.create();
        Objects.requireNonNull(compiler, "Compiler factory returned null compiler");

        MinimalJavaCompileOptions compileOptions = spec.getCompileOptions();
        Charset charset = Optional.ofNullable(compileOptions.getEncoding())
            .map(Charset::forName)
            .orElse(null);