Arch Linux User Repository

8.1.1 gcc - all builds fine

This build dies for me on gcc 6.3.1:

diff.cpp: In member function ‘void SourceData::FileData::preprocess(bool, QTextCodec*)’:
diff.cpp:894:16: error: ambiguous overload for ‘operator==’ (operand types are ‘const QChar’ and ‘char’)
if ( p[i]=='\0' )

The following patch worked:

edit: I guess AUR formatter doesn't like patches. At any rate, changing the line in question to

if ( p[i]==QChar('\0') )

works.

Thanks! That did it. I would never have thought of that. Sorry!

Maybe the optional dependencies for the xcb backend are not installed?

$ pacman -Qi qt5-base | grep xcb
Depends On : libjpeg-turbo xcb-util-keysyms libgl dbus fontconfig systemd xcb-util-wm libxrender libxi sqlite xcb-util-image icu qtchooser
libxkbcommon-x11: xcb plugin [installed]
libsm: xcb plugin [installed]

This seems to happen regardless if I have QT_PLUGIN_PATH set.

[swinchen@splice ~]$ ls -l /usr/lib/qt/plugins/platforms/libqxcb.so
-rwxr-xr-x 1 root root 775352 May 14 02:30 /usr/lib/qt/plugins/platforms/libqxcb.so

[swinchen@splice ~]$ pacman -Qo /usr/lib/qt/plugins/platforms/libqxcb.so
/usr/lib/qt/plugins/platforms/libqxcb.so is owned by qt5-base 5.4.1-8

[swinchen@splice ~]$ echo $QT_PLUGIN_PATH
/usr/lib/qt/plugins

[swinchen@splice ~]$ kdiff3
This application failed to start because it could not find or load the Qt platform plugin "xcb".

Available platform plugins are: eglfs, kms, linuxfb, minimal, minimalegl, offscreen, xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)

According to [1], it is related to the QT_PLUGIN_PATH.

Does /usr/lib/qt/plugins/platforms/libqxcb.so exist on your system (owned by qt5-base)? Did you set/adjust the QT_PLUGIN_PATH variable?

[1] http://stackoverflow.com/questions/28899812/going-from-qt4-to-qt5-on-linux-this-application-failed-to-start-because-it-coul

According to [1], it is related to the QT_PLUGIN_PATH.

Does /usr/lib/qt/plugins/platforms/libqxcb.so exist on your system (owned by qt5-base)? Did you set/adjust the QT_PLUGIN_PATH variable?

I get this when starting kdiff3. I checked and library dependencies look ok.


[swinchen@splice ~]$ kdiff3
This application failed to start because it could not find or load the Qt platform plugin "xcb".

Available platform plugins are: eglfs, kms, linuxfb, minimal, minimalegl, offscreen, xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)
[swinchen@splice ~]$ which kdiff3
/usr/bin/kdiff3
[swinchen@splice ~]$ ldd /usr/bin/kdiff3
linux-vdso.so.1 (0x00007ffd991c8000)
libQt5PrintSupport.so.5 => /usr/lib/libQt5PrintSupport.so.5 (0x00007f32a4491000)
libQt5Widgets.so.5 => /usr/lib/libQt5Widgets.so.5 (0x00007f32a3c74000)
libQt5Gui.so.5 => /usr/lib/libQt5Gui.so.5 (0x00007f32a372c000)
libQt5Core.so.5 => /usr/lib/libQt5Core.so.5 (0x00007f32a325a000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f32a2f4b000)
libm.so.6 => /usr/lib/libm.so.6 (0x00007f32a2c46000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f32a2a30000)
libc.so.6 => /usr/lib/libc.so.6 (0x00007f32a268d000)
libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f32a2470000)
libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x00007f32a221f000)
libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007f32a1f11000)
libX11.so.6 => /usr/lib/libX11.so.6 (0x00007f32a1bcf000)
libpng16.so.16 => /usr/lib/libpng16.so.16 (0x00007f32a1999000)
libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x00007f32a173c000)
libz.so.1 => /usr/lib/libz.so.1 (0x00007f32a1526000)
libGL.so.1 => /usr/lib/libGL.so.1 (0x00007f32a11ce000)
libicui18n.so.54 => /usr/lib/libicui18n.so.54 (0x00007f32a0d77000)
libicuuc.so.54 => /usr/lib/libicuuc.so.54 (0x00007f32a09e7000)
libpcre16.so.0 => /usr/lib/libpcre16.so.0 (0x00007f32a0782000)
libdl.so.2 => /usr/lib/libdl.so.2 (0x00007f32a057e000)
librt.so.1 => /usr/lib/librt.so.1 (0x00007f32a0376000)
libsystemd.so.0 => /usr/lib/libsystemd.so.0 (0x00007f32a4462000)
/lib64/ld-linux-x86-64.so.2 (0x00007f32a4314000)
libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007f32a0107000)
libffi.so.6 => /usr/lib/libffi.so.6 (0x00007f329fefe000)
libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007f329fcdc000)
libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007f329fa1f000)
libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x00007f329f801000)
libnvidia-tls.so.346.47 => /usr/lib/libnvidia-tls.so.346.47 (0x00007f329f5fe000)
libnvidia-glcore.so.346.47 => /usr/lib/libnvidia-glcore.so.346.47 (0x00007f329c925000)
libXext.so.6 => /usr/lib/libXext.so.6 (0x00007f329c713000)
libicudata.so.54 => /usr/lib/libicudata.so.54 (0x00007f329ace9000)
libcap.so.2 => /usr/lib/libcap.so.2 (0x00007f329aae5000)
liblzma.so.5 => /usr/lib/liblzma.so.5 (0x00007f329a8bf000)
liblz4.so.1 => /usr/lib/liblz4.so.1 (0x00007f329a6b4000)
libgcrypt.so.20 => /usr/lib/libgcrypt.so.20 (0x00007f329a3d3000)
libgpg-error.so.0 => /usr/lib/libgpg-error.so.0 (0x00007f329a1c1000)
libresolv.so.2 => /usr/lib/libresolv.so.2 (0x00007f3299faa000)
libXau.so.6 => /usr/lib/libXau.so.6 (0x00007f3299da6000)
libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007f3299ba0000)
libbz2.so.1.0 => /usr/lib/libbz2.so.1.0 (0x00007f3299990000)
libattr.so.1 => /usr/lib/libattr.so.1 (0x00007f329978b000)
[swinchen@splice ~]$

I get the following when trying to run this version of kdiff3

[swinchen@splice]$ kdiff3
This application failed to start because it could not find or load the Qt platform plugin "xcb".

Available platform plugins are: eglfs, kms, linuxfb, minimal, minimalegl, offscreen, xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)
[swinchen@splice]$

Switched to Qt5