Failed to compile on Linux due to missing lib

[KHN190]

I tried to compile rpfm on Ubuntu 18.04 and failed on building rfpm-ui:

  = note: /usr/bin/ld: cannot find -lqt_subclasses
          collect2: error: ld returned 1 exit status

This is due to a missing lib qt_subclasses. Though I see the command using local ./libs directory which contains a qt_subclasses.lib, I think .lib is not usable for Linux. Can I compile the .so myself using source code?

[Frodo45127]

qt_subclasses is compiled from the rpfm_ui/qt_subclasses folder when you compile rpfm_ui. If it's not finding it and you haven't touched the build.rs... maybe there was some error while compiling it? Do you have qt and qmake installed?

[KHN190]

@Frodo45127 I have Qt 5.13.0 built from source (tried 5.15 but it says can't recognize the version and is falling back to closest version 5.13), I also didn't edit source code yet, and for the all 285 building tasks it is the only error I have in compilation..

Does Qt version matter here? In doc and readme the numbers don't meet.

$ qmake --version
QMake version 3.1
Using Qt version 5.13.0 in /usr/local/Qt-5.13.0/lib

[KHN190]

Or if it's easier to add a compiled dylib for Linux under ./libs?

[Frodo45127]

any version of qt above 5.8 is enough. You can check why it doesn't compile by compiling it manually. Just go to rpfm_ui/qt_subclasses, then launch qmake, then make. That's really what cargo does when compiling the UI.

[KHN190]

Thanks, that's helpful! I got the error:

$ qmake
Project ERROR: Unknown module(s) in QT: KTextEditor

Means kde framework missing? Tried install libkf5texteditor-dev and libktexteditor4 but neither fix it.

[Madcliff]

I am getting this same error when trying to build on Arch...

[Frodo45127]

Here on arch, I just needed qt and the ktexteditor (kf5) package, make and qt with qmake. If that doesn't work.... try compiling it with qt-creator. Sometimes that works. Sadly, this falls into the "weird c++ magic" category. Works as-is in some systems, needs modifications and dark rituals on others. And I have no idea why.

[KHN190]

I had some progress today building kf5 from source - the reason I think libkf5texteditor-dev doesn't work is that my Qt is built from source, and so here I had new kde framwork 5: /usr/lib/x86_64-linux-gnu/*.so including libKF5TextEditor.so.

However, when I enter qt_subclasses and manually do qmake I still got:

Project ERROR: Unknown module(s) in QT: KTextEditor

How do I link kf5 to this project (or, the Qt it is using)? This didn't work:

# edit qt_subclasses.pro
LIBS += /usr/lib/x86_64-linux-gnu/

ps. This guideline builds the whole kf5, even though we don't actually need all of them but it's quite informative. Also this post on GitHub helped.

Thanks!

[Frodo45127]

After checking a bit on my side, you may need the ktexteditor.pri file. On arch, it gets installed as part of the ktexteditor package, on /usr/lib/qt/mkspecs/modules/qt_KTextEditor.pri. Not sure where it gets installed in other distros, but it may be a clue to why KTextEditor it's not getting found. Also, I'm going to pin this issue, as it may be quite useful to others too in the future.

[KHN190]

Finally, got it running. :D For anyone who needs to build kf5 with Qt, have a look at the gist.

0. install Qt, mine was in /usr/local/Qt-5.13.0/
1. download kf5 source code
2. in kf5 source code directory run install.sh
3. verify in qt_subclass dir with qmake
4. in rpfm run cargo build

[Salamanderr1]

on fedora 33, fixed by installing kf5-* and adding -I/usr/include/KF5/ to INCPATH in rpfm_ui/qt_subclasses/Makefile. (because /usr/include/KF5/KTextEditor/ktexteditor/editor.h includes <KSyntaxHighlighting/Theme>...)
i have also ran make inside rpfm_ui/qt_subclasses/ before running cargo build again.

[Frodo45127]

I got that one too on both arch and windows. The solution for me was to change <KSyntaxHighlighting/Theme> with <KF5/KSyntaxHighlighting/Theme> in editor.h and view.h.

[Madcliff]

This error is occurring again on the most recent PKGBUILD