No libQt5Core.so, libQt5Widgets.so and libQt5Gui.so symlinks in the corresponding :i386 packages

[lvd]

While trying to link against corresponding libraries to get i386 executable like that:
> g++ -m32 -o filename ..... -lQt5Widgets -lQt5Gui -lQt5Core ...

I get the following errors:

> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Widgets.so when searching for -lQt5Widgets
> /usr/bin/ld: cannot find -lQt5Widgets: No such file or directory
> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Widgets.so when searching for -lQt5Widgets
> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Gui.so when searching for -lQt5Gui
> /usr/bin/ld: cannot find -lQt5Gui: No such file or directory
> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Gui.so when searching for -lQt5Gui
> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Core.so when searching for -lQt5Core
> /usr/bin/ld: cannot find -lQt5Core: No such file or directory
> /usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/libQt5Core.so when searching for -lQt5Core

despite corresponging packages are installed (libqt5gui5:i386 and same for widgets and core).

Inspection of /usr/lib/i386-linux-gnu/ reveals that there is no symlinks named exactly libQt5Core.so (and same for two other libs).

Adding those symlinks by hand completely solves the problem.

I believe however that those symlinks must be installed by corresponding .debs.

[Ubuntu Foundations Team Bug Bot (crichton)]

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[Dmitry Shachnev (mitya57)]

You probably need to install qtbase5-dev:i386, not just libqt5*:i386.

[Tom (dgenr8)]

This may be the wrong place to confirm this, and I don't know what package the link libQt5Core.so is supposed to be a part of, but I can confirm that this particular symlink was missing immediately after upgrading to 22.04 from 20.04.

No others were missing on my system.

[Dmitry Shachnev (mitya57)]

> what package the link libQt5Core.so is supposed to be a part of

qtbase5-dev