Rollup merge of #64884 - jakevossen5:master, r=Mark-Simulacrum

Add pkg-config to dependency list if building for Linux on Linux

I got this message when building from source on Ubuntu:

```
It looks like you're compiling on Linux and also targeting Linux. Currently this
requires the `pkg-config` utility to find OpenSSL but unfortunately `pkg-config`
could not be found. If you have OpenSSL installed you can likely fix this by
installing `pkg-config`.
```

I feel like it would be a better experience to show this in the dependencies instead of having to run into this issue.
This commit is contained in:
Mazdak Farrokhzad 2019-09-29 04:36:04 +02:00 committed by GitHub
commit 0d4afa164b
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@ -33,6 +33,7 @@ or reading the [rustc guide][rustcguidebuild].
* `curl`
* `git`
* `ssl` which comes in `libssl-dev` or `openssl-devel`
* `pkg-config` if you are on compiling on Linux and targeting Linux
2. Clone the [source] with `git`: