> 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/port/di-10-zhang-ce-shi-port/10.8.tiao-shi-port.md).

# 10.8.调试 port

有时，程序在运行时会出现问题，导致 Port 失败。框架提供了一些辅助工具来帮助调试 Ports。这些工具的功能是有限的，因为调试 Port 的方式很大程度上取决于使用的技术。以下变量有助于调试 Ports：

* `WITH_DEBUG`：如果设置此变量，Ports 将会在构建时包含调试符号。
* `WITH_DEBUG_PORTS`：指定要使用 `WITH_DEBUG` 选项构建的 Ports 列表。
* `DEBUG_FLAGS`：用于指定要添加到 `CFLAGS` 的附加标志，默认值为 `-g`。

当 `WITH_DEBUG` 被设置时，无论是全局设置还是针对某些 Ports 设置，生成的二进制文件都不会被剥离调试信息。

这些变量可以在 **make.conf** 或命令行中指定：

```sh
# cd category/port && make -DWITH_DEBUG DEBUG_FLAGSS="-g -O0"
```

> **注意**
>
> 如果使用 [ports-mgmt/poudriere](https://cgit.freebsd.org/ports/tree/ports-mgmt/poudriere/) 构建 Port，调试变量必须在 poudriere 的 **make.conf** 中指定，而不是在 **/etc/make.conf** 中指定。有关详细信息，请参阅 [ports-mgmt/poudriere](https://cgit.freebsd.org/ports/tree/ports-mgmt/poudriere/) 文档。

有关更多调试工具的信息，请参阅 [Developer’s Handbook](https://docs.freebsd.org/en/books/developers-handbook/tools#debugging)。


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