> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/porters-handbook/di-5-zhang-pei-zhi-makefile/5.15.-te-shu-de-gong-zuo-mu-lu.md).

# 5.15.特殊的工作目录

每个 Port 都会解压到一个工作目录中，该目录必须是可写的。Ports 系统默认将 `DISTFILES` 解压到一个名为 `${DISTNAME}` 的目录中。换句话说，如果 **Makefile** 中有：

```makefile
PORTNAME=	foo
DISTVERSION=	1.0
```

那么该 Port 的分发文件会包含一个顶级目录 **foo-1.0**，其余的文件都位于该目录下。

如果不是这种情况，可以覆盖一些变量。

## 5.15.1. `WRKSRC`

该变量列出了提取时创建的目录名。如果我们之前的例子中，文件解压到了一个名为 **foo** 的目录（而不是 **foo-1.0**），那么可以写：

```makefile
WRKSRC=	${WRKDIR}/foo
```

或者可能是：

```makefile
WRKSRC=	${WRKDIR}/${PORTNAME}
```

## 5.15.2. `WRKSRC_SUBDIR`

如果所需的源文件位于提取的分发文件的子目录中，请将 `WRKSRC_SUBDIR` 设置为该目录。

```makefile
WRKSRC_SUBDIR=	src
```

## 5.15.3. `NO_WRKSUBDIR`

如果 Port 完全没有提取到子目录中，则将 `NO_WRKSUBDIR` 设置为 `yes` 来指示这一点。

```makefile
NO_WRKSUBDIR=	yes
```

> **注意**
>
> 由于 `WRKDIR` 是构建过程中唯一应当可写的目录，并且用于存储记录构建状态的许多文件，因此 Port 的提取会强制放入一个子目录。


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