[Interest] Qt Lite 5.8

[Jason H]

> Sent: Monday, January 30, 2017 at 12:57 PM
> From: "mark diener" <rpzrpzrpz at gmail.com>
> To: "Kai, Koehne" <Kai.Koehne at qt.io>
> Cc: "Tor Arne, Vestbø" <Tor.arne.Vestbo at qt.io>, "interest at qt-project.org" <interest at qt-project.org>
> Subject: Re: [Interest] Qt Lite 5.8
>
> Kai:
> 
> Thank you for the response.
> 
> As a QT customer, I would hope that communications from Qt Staff would
> yield something that I can USE.
> 
> Your response suggested that dependency build failures are an uncommon
> occurrence. ("there might still be feature permutations that lead to
> compilation errors")
> 
> I can assure you that 100% of my attempts to reduce the binary size of
> Qt 5.8 have ended in failure.
> 
> Don't believe me?  Try this test config line:
> 
> /macdev/qt580/5.8/Src/configure -prefix /macdev/qt580/5.8/osxstat \
> -verbose \
> -opensource \
> -release \
> -strip \
> -c++std c++11 \
> -confirm-license \
> -reduce-exports \
> -nomake tests \
> -nomake examples \
> -qt-libjpeg \
> -qt-libpng \
> -opengl desktop \
> -no-widgets
> 
> 
> Results in build failure:
> 
> 10.11.sdk/System/Library/Frameworks/AGL.framework/Headers
> -I/macdev/qt580/5.8/Src/qtbase/mkspecs/macx-clang
> -F/macdev/qt580/5.8/build-osx/qtbase/lib -o .obj/qmacfunctions_mac.o
> /macdev/qt580/5.8/Src/qtmacextras/src/macextras/qmacfunctions_mac.mm
> In file included from
> /macdev/qt580/5.8/Src/qtmacextras/src/macextras/qmacfunctions_mac.mm:50:
> In file included from /macdev/qt580/5.8/Src/qtbase/include/QtWidgets/QMenu:1:
> In file included from /macdev/qt580/5.8/Src/qtbase/include/QtWidgets/qmenu.h:1:
> In file included from
> /macdev/qt580/5.8/Src/qtbase/include/QtWidgets/../../src/widgets/widgets/qmenu.h:43:
> In file included from
> /macdev/qt580/5.8/Src/qtbase/include/QtWidgets/qtwidgetsglobal.h:1:
> /macdev/qt580/5.8/Src/qtbase/include/QtWidgets/../../src/widgets/kernel/qtwidgetsglobal.h:44:10:
> fatal error: 'QtWidgets/qtwidgets-config.h' file not
>       found
> #include <QtWidgets/qtwidgets-config.h>
>          ^
> 1 error generated.
> make[3]: *** [.obj/qmacfunctions_mac.o] Error 1
> make[2]: *** [sub-macextras-install_subtargets] Error 2
> make[1]: *** [sub-src-install_subtargets] Error 2
> make: *** [module-qtmacextras-install_subtargets] Error 2
> Start:Mon Jan 30 11:40:59 CST 2017 End:Mon Jan 30 11:52:37 CST 2017
> mds-Mac-mini:builds md$
> 
> So how do I get rid of widgets, since I am only using Qt Quick QML?
> 
> Maybe Qt can provide configuration command line examples of reduced
> size builds that actually WORK.


Clearly, there is a tangled dependency web. OSX apps have menus, the the QML menu stuff inherits from the QMenu stuff. There may be widgets that just aren't severable, however, I agree that things should be more piecemeal because if you don't you wind up with this. You may just want to do static linking if min binary size is what you are after.

With some of the blog posts about the upcoming 5.9 and later, it looks like the differences between the systems will be minimized.