Java 如何以源代码外的方式运行“ant”？

试图构建一个Android应用程序，我不得不运行

ant

进程失败，并出现以下日志：

...
     [echo] ----------
     [echo] Building Libraries with 'release'...
   [subant] No sub-builds to iterate on

-code-gen:
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...

BUILD FAILED
C:\Android\android-sdk_r24.4.1-windows\android-sdk-windows\tools\ant\build.xml:649: The following error occurred while executing this line:
C:\Android\android-sdk_r24.4.1-windows\android-sdk-windows\tools\ant\build.xml:655: C:\dev\bin\arm-maketest\src does not exist.

由于我正在进行源代码外构建，ant正在查找的

src

目录存在，但它在其他地方

如何将此详细信息指定给

ant