Auto merge of #22408 - technicalguy:linux-mint-build-info-readme, r=jdm

Add info about building on Linux Mint to README.md

Linux Mint 19.* is based on Ubuntu 16.04 packages.

---
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [X] These changes do not require tests because they are documentation changes in the `README.md`

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bors-servo 2018-12-10 20:57:03 -05:00 committed by GitHub
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@ -91,10 +91,12 @@ sudo apt install git curl autoconf libx11-dev \
libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev autoconf2.13
```
If you using a version prior to **Ubuntu 17.04** or **Debian Sid**, replace `libssl1.0-dev` with `libssl-dev`.
If you using a version prior to **Ubuntu 17.04**, **Linux Mint 19** or **Debian Sid**, replace `libssl1.0-dev` with `libssl-dev`.
Additionally, you'll need a local copy of GStreamer with a version later than 12.0. You can place it in `support/linux/gstreamer/gstreamer`, or run `./mach bootstrap-gstreamer` to set it up.
If you are using **Ubuntu 16.04** run `export HARFBUZZ_SYS_NO_PKG_CONFIG=1` before building to avoid an error with harfbuzz.
If you are using **Ubuntu 16.04** or **Linux Mint 18.&#42;** run `export HARFBUZZ_SYS_NO_PKG_CONFIG=1` before building to avoid an error with harfbuzz.
If you get an undefined symbol error on `gst_player_get_config` try removing `gir1.2-gst-plugins-bad-1.0` and all old versions of clang, see [#22016](https://github.com/servo/servo/issues/22016)
If you are on **Ubuntu 14.04** and encountered errors on installing these dependencies involving `libcheese`, see [#6158](https://github.com/servo/servo/issues/6158) for a workaround. You may also need to install gcc 4.9, clang 4.0, and cmake 3.2: