message: Add debian dependencies, spoon feed build commands
diff: @@ -54,6 +54,27 @@ scl enable devtoolset-7 bash
  And build within the resulting bash shell, which has the tools first in PATH.
  +Debian 9+ (stretch):
  +```
  +sudo apt-get install libx11-dev libx11-xcb-dev mesa-common-dev libgl1-mesa-dev libxcb-keysyms1-dev cmake python3-dev bison autoconf automake libpcre3-dev
  +```
  +
  +For qrenderdoc:
  +```
  +sudo apt-get install qt5-qmake libqt5svg5-dev libqt5x11extras5-dev
  +```
  +
  +### Linux build
  +
  +```
  +git clone https://github.com/baldurk/renderdoc.git
  +cd renderdoc
  +export QT_SELECT=qt5
  +cmake -B build -S .
  +cd build/
  +make
  +```
  +
  On any distribution if you find qmake isn't available under its default name, or if `qmake -v` lists a Qt4 version, make sure you have qtchooser installed in your package manager and use it to select Qt5. This might be done by exporting `QT_SELECT=qt5`, but check with your distribution for details.
  For some distributions such as CentOS, the Qt5 qmake command is `qmake-qt5`. To select this explicitly, pass `-DQMAKE_QT5_COMMAND=qmake-qt5` when invoking `cmake`.
  