Error when trying to install on Debian 9.6

[CHAOS-en-Krojerk]

When I'm trying to compile using make/make install, it gives me the following compilation errors:

../libLumina/LuminaX11.cpp: In member function ‘QIcon LXCB::WindowIcon(WId)’: ../libLumina/LuminaX11.cpp:501:6: error: ‘qsizetype’ was not declared in this scope for(qsizetype i=0; i<image.sizeInBytes()/4; ++i, ++dat){ ^~~~~ ../libLumina/LuminaX11.cpp:501:21: error: ‘i’ was not declared in this scope for(qsizetype i=0; i<image.sizeInBytes()/4; ++i, ++dat){ ^ ../libLumina/LuminaX11.cpp:501:29: error: ‘class QImage’ has no member named ‘sizeInBytes’ for(qsizetype i=0; i<image.sizeInBytes()/4; ++i, ++dat){ ^~~ ../libLumina/LuminaX11.cpp: In member function ‘void LXCB::paintRoot(QRect, const QPixmap*)’: ../libLumina/LuminaX11.cpp:550:12: error: ‘class QImage’ has no member named ‘sizeInBytes’ 0, qimage.sizeInBytes(), qimage.bits()); ^~~ Makefile:1283: recipe for target '.build/obj/LuminaX11.o' failed make[3]: [.build/obj/LuminaX11.o] Error 1 make[3]: Leaving directory '/root/lumina/src-qt5/core/lumina-desktop' Makefile:47: recipe for target 'sub-lumina-desktop-make_first' failed make[2]: [sub-lumina-desktop-make_first] Error 2 make[2]: Leaving directory '/root/lumina/src-qt5/core' Makefile:44: recipe for target 'sub-core-make_first' failed make[1]: [sub-core-make_first] Error 2 make[1]: Leaving directory '/root/lumina/src-qt5' Makefile:42: recipe for target 'sub-src-qt5-make_first' failed make: [sub-src-qt5-make_first] Error 2

What I did before:

• su -
• apt-get install build-essential git qt5-default qttools5-dev-tools libqt5gui5 qtmultimedia5-dev libqt5multimediawidgets5 libqt5network5 libqt5svg5-dev libqt5x11extras5-dev libxcb-icccm4-dev libxcb-ewmh-dev libxcb-composite0-dev libxcb-damage0-dev libxcb-util0-dev libphonon-dev libxcomposite-dev libxdamage-dev libxrender-dev libxcb-image0-dev libxcb-screensaver0-dev qtdeclarative5-dev fluxbox kde-style-oxygen xscreensaver xbacklight alsa-utils acpi numlockx pavucontrol xterm sysstat git
• git clone https://github.com/trueos/lumina.git
• cd lumina
• qmake LINUX_DISTRO=Debian
• make (fails here)

[lbartoletti]

Can you try by including #include in LuminaX11.cpp? What is your version of Qt?

[CHAOS-en-Krojerk]

Qt version 5.7.1. Tried to add #include in LuminaX11.cpp, I still get the same errors.

[lbartoletti]

Qt version is too old. https://doc.qt.io/qt-5/qimage.html#sizeInBytes

After https://github.com/lumina-desktop/lumina/pull/706 minimal Qt version should be 5.11...

cc @beanpole135

[beanpole135]

After some review, it appears that the QImage size function change is fairly important to Qt, as there are some significant warnings about file sizes and such on the depricated function, so I am leaning toward just documenting the new minimum Qt version for the master branch of the Lumina desktop sources. By the same token, it appears that the new size functions were added in Qt 5.10, unless @lbartoletti is aware of some other functions aside from the QImage::sizeInBytes() we are now using which require Qt 5.11

[q5sys]

Im closing this as it seems that a newer qt version was the solution, and the documentation has been udpated.