* fixed audio override key unset issues
* Add apt-transport-https to CircleCI config
CircleCI fails with
E: The method driver /usr/lib/apt/methods/https could not be found.
when attempting to get the LLVM key.
This is suspected to happen because of an update to the image.
Co-authored-by: Vasily <vautkin@teknik.io>
As described in issue
https://github.com/OpenVR-Advanced-Settings/OpenVR-AdvancedSettings/issues/266
the gcc-9 libstdc++ version is not included in Ubuntu 18.04 or
derivatives, which leads to a runtime error.
gcc-7 is the oldest version that has c++17 support. If we didn't need
C++17 support then we could use gcc-5, which is included with Ubuntu
14.04.
CircleCI Xenial does not come with an up to date version of Clang. It is
therefore required to get the newest version (8). The .pri file has
quickly been edited to be similar to the g++ version check.
ykearaandVasily