Self-built qBittorrent cannot find proper QT version. #19642
Replies: 5 comments 23 replies
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you have 2 options to solve this:
as alternative solution, you can just copy built qBittorrent executable instead of (or after) doing what happens and whyby default, Qt adds libQt6Widgets.so.6 => /home/nick/Qt/6.5.2/gcc_64/lib/libQt6Widgets.so.6 (0x00007faf07600000)
libQt6Gui.so.6 => /home/nick/Qt/6.5.2/gcc_64/lib/libQt6Gui.so.6 (0x00007faf06c00000)
libQt6Core.so.6 => /home/nick/Qt/6.5.2/gcc_64/lib/libQt6Core.so.6 (0x00007faf06400000)but CMake generates rule which removes this hardcoded path (so-called file(RPATH_CHANGE
FILE "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/font_preview"
OLD_RPATH "/home/nick/Qt/6.5.2/gcc_64/lib:"
NEW_RPATH "")as result, installed executable doesn't contain hardcoded paths to your custom Qt, and it must be found in libQt6Widgets.so.6 => not found
libQt6Gui.so.6 => not found
libQt6Core.so.6 => not foundmanually built Qt is installed in custom folder which is not considered as path for searching required libraries on runtime, so it couldn't be found. by the way, for the same reason (custom install folder) you have to specify you can try to run qBittorrent just by setting LD_LIBRARY_PATH=/usr/local/Qt-6.5.2/lib qbittorrentrunning LD_LIBRARY_PATH=/usr/local/Qt-6.5.2/lib ldd /usr/local/bin/qbittorrentspecifying |
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After creating I got past the previous error, but now get a new one: |
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do you have |
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I did not have that file. After rebuilding QT from scratch with the directions supplied in that thread I still do not see libqxcb anywhere in my installed QT files. The only xcb-related files I see in /usr/local/Qt-6.5.2 are After having rebuilt qt with the instructions in that thread, I built qBit again according to the |
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For the future, when you're less busy with work and able to answer further; I was able to install the packages from your repo, but now compiling gives me the following error |
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looks completely strange... even not sure what to say... |
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Ahh, sorry, forgot to append that. Now I get this error: |
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ugh... this is totally unexpected, even in multiple ways... so, building everything from sources on your machine is the only way to get things work, sorry. it looks like you are experienced enough Linux user to fill some missing or unclear parts of some guide, so even very draft version very likely will help you. |
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No need to rush, and I appreciate all the help thus far. Thank you! |
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very draft version of guide (barely the commands history + some comments) how to build qBittorrent and all its dependencies from sources, hope that will help. tested on Linux Mint 21.2 running in VirtualBox. |
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Worked perfectly!
I do have a few questions I was wondering regarding the guide:
Thank you so much! I've never been able to successfully self-build newer QT versions for this purpose, even if it only works for one program. |
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this
not quite understand what do you mean, if this about the sequence, yes, it can be changed. I just build Qt first as so as this is most complex part. no any prebuilt boost binaries were downloaded, I download sources, just an archive from official website. using boost sources from git is very tricky.
just to build it with the same boost version as qBittorrent itself. qBittorrent requires newer boost version than available in repos. who knows how 2 parts built with different boost will behave (especially when boost types are a part of libtorrent's interface, and used boost part is header-only, so everything is "embedded" into binaries that uses it). so, in short - just to avoid any subtle problems. also this demonstrates how to build libtorrent if someone wants any custom version.
this is definitely outside of scope. user should handle this only by himself (or just rely on distro package management system, for example just use ArchLinux). I didn't use git just to show that it is not strictly necessary, also just to download bare minimum (especially noticeable for Qt). downloading can be done in any way convenient to the user, this is just a one of possible ways.
depends on application (what it wants/uses from Qt). but in general, this setup is enough to cover most cases. you will get an error during configuration (if application project setup correctly) if something required is missing in Qt installation. in worst case (no proper configuration checks) you will get build error. |
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Okay, that answers everything. Thank you so much! |
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full manual based on previous draft (set of commands) is published. |
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thank you! apparently, this is not for me, I use the appimage appn, but it has strange bugs (after a while the menu disappears on right click, and some problems with resuming torrent seeding), I try to install a regular application on Linux Mint, but because of QT I get a lot of errors
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don't use Qt 6.5.x, use Qt 6.6.1 at least. Qt 6.5.x requires some patching (discussion here is about Qt 5.15, but the same is relevant for Qt 6.5) to get successful build. |
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omg thank you! I installed version 6.6.1 and did almost everything, at the last step I got a strange error: |
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looks like you are (re-)using the same build directory (/home/se7en/build-qbt) from the previous build try. just remove it and try again. it is not allowed to reuse the same build directory for building different sources. fortunately cmake can detect this and give a meaningful message before strange things during the build start to happen... but before this decide what you want to build: qBittorrent 4.6.7 (what you previously tried to build and this build directory has left from that try) or qBittorrent from master branch sources (aka development version), or maybe something else (like stable 5.0.0 release). if you want 4.6.7, you also will need additional argument to cmake command line - but if you want development version (or 5.0.0 release), you have to build Qt first, as you don't have suitable version available. even more, please check all paths in cmake command, I still see "/usr/local/Qt-6.5.2" there (very likely just copied from my guide), it must be replaced with the right one (very likely "/usr/local/Qt-6.6.1", unless you specified something else during Qt configuration). |
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Thank you very much, i did it all, installed it and it all works! It seems to me, or your guide should be put in the wiki, as it is impossible to install this client in any other way.... |
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https://github.com/qbittorrent/qBittorrent/discussions/new?category=q-a
I am on Mint 21.2, which doesn't have qt6.5 available through any repository at the moment, so I built and installed qt6.5.2 from source.
Despite this, when building (using the steps outlined under
2a) Compile and install qBittorrent with Qt graphical interfacein the INSTALL file), cmake does not find the proper qt version.After setting the cmake environment variable with
export CMAKE_PREFIX_PATH=/usr/local/Qt-6.5.2/, it built and installed properly. However, after installing, it still cannot find the proper qt version when I run the program.What do I need to do so that qBittorent can find the proper qt version?
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