[Interest] Doing a leanest-possible QtWebEngine build

[René J. V. Bertin]

Thiago Macieira wrote:

> And yet that's the only accepted, official way for qmake.

So how does this work for regular users on a system where they can't modify the 
mkspecs files?

>> But above all: the defaults are set in qmodule.pri, also on Linux, with
>> 
>> QMAKE_CFLAGS += -O3 -g
>> QMAKE_CXXFLAGS += -O3 -g
> 
> That isn't done anymore because it broke a lot of stuff. Upgrade to 5.8 and
> you'll see.

I'll upgrade to 5.8 when its .1 baby has been released into the wild :)

What isn't done anymore, resetting QMAKE_*FLAGS in qmodule.pri? Or modifying the 
variables at all?

R