ravas wrote

It builds fine... it just outputs a lot more warnings than gcc.
These can be suppressed by adding to src.pro:
QMAKE_CXXFLAGS_WARN_ON = -w
or just one of the big offenders
QMAKE_CXXFLAGS_WARN_ON = -Wno-inconsistent-missing-override

Although, it's probably smart not to commit those, incase someone is inspired to deal with the 50k issues.

It seems the following is preferred:

CONFIG += warn_off

http://stackoverflow.com/questions/18667291/disable-wall-compiler-warnings-in-a-qt-project
http://doc.qt.io/qt-5/qmake-variable-reference.html#config

Curiously it will still say:
Project ERROR: muparser development package not found

Yet the cal command seems to work.