[Interest] porting to Qt 5.4 - MOC very slow on Windows
Bob Hood
bhood2 at comcast.net
Fri Jan 16 00:05:56 CET 2015
On 1/15/2015 3:35 PM, Henry Skoglund wrote:
> > I'm trying to port our app from Qt 4.8 to 5.4.
> > Currently working in MSVC 2013,
> > and using the pre-built Qt binaries for that environment.
> >
> > We have about 440 files being MOCed during build. On 5.4, each file
> > is taking 2-3 seconds meaning the overall build is significantly
> > longer than in 4.8.
> >
> > I found a reference to a similar problem here -
> > http://qt-project.org/forums/viewthread/47901 - which was due to using
> > MOC on a network drive. In my case everything is on local SSD.
> >
> > Any suggestions?
>
> One trick I've used for speedup; since MOC ignores your .cpp files, is
> to move #includes of external .h files, for example
> windows.h, from myclass.h to myclass.cpp.
Nice trick. Thanks, Henry. :)
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