> 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/5.9.portscout.md).

# 5.9.PORTSCOUT

Portscout 是 FreeBSD Ports Collection 的自动化 distfile 检查工具，详细描述见 [Portscout: the FreeBSD Ports Distfile Scanner](https://docs.freebsd.org/en/books/porters-handbook/keeping-up/#distfile-survey)。

`PORTSCOUT` 定义了 Portscout distfile 扫描器受限的特殊条件。

设置 `PORTSCOUT` 时的情况包括：

* 当需要忽略特定版本的 distfile 时。例如，排除版本 *8.2* 和版本 *8.3* 的 distfile 版本检查，因为已知它们存在问题，可以添加：

  ```makefile
  PORTSCOUT=	skipv:8.2,8.3
  ```
* 当需要完全禁用 distfile 版本检查时。例如，如果 Port 永远不会再更新，可以添加：

  ```makefile
  PORTSCOUT=	ignore:1
  ```
* 当必须检查特定版本或特定主次版本的 distfile 时。例如，如果只有版本 *0.6.4* 需要监控，因为较新版本与 FreeBSD 存在兼容性问题，可以添加：

  ```makefile
  PORTSCOUT=	limit:^0\.6\.4
  ```
* 当列出可用版本的 URL 与下载 URL 不同时。例如，限制 distfile 版本检查仅限于 [databases/pgtune](https://cgit.freebsd.org/ports/tree/databases/pgtune/) Port 的下载页面，可以添加：

  ```makefile
  PORTSCOUT=	site:http://www.renpy.org/dl/release/
  ```


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