[Slackbuilds-users] mkvtoolnix problem

Sun Mar 8 19:30:57 UTC 2026

For what it is worth, I was able to build it on a different 15.0 system. A
major difference is that Qt6 is not installed in this system.

On Sun, Mar 8, 2026 at 12:44 PM Luveh Keraph <1.41421 at gmail.com> wrote:

> Out of those the only one that is installed in my system is pugixml. At
> any rate, isn't the error diagnostic suggestive of something going on with
> the Qt library? What follows is a list of packages that may be related to
> Qt that I have in my system:
>
> -rw-r--r-- 1 root root   55573 Jan 22  2025 PyQt5-5.15.2-x86_64-5
> -rw-r--r-- 1 root root    5706 Jan 22  2025 QtAV-20210414_305e5404-x86_64-1
> -rw-r--r-- 1 root root    5730 Jan 22  2025 bluez-qt-5.90.0-x86_64-1
> -rw-r--r-- 1 root root    3796 Jan 22  2025 fcitx-qt5-1.2.7-x86_64-1
> -rw-r--r-- 1 root root    1334 Jan 22  2025 kdevelop-pg-qt-2.2.1-x86_64-4
> -rw-r--r-- 1 root root    1403 Jan 22  2025 kqtquickcharts-21.12.1-x86_64-1
> -rw-r--r-- 1 root root    1697 Jan 22  2025 layer-shell-qt-5.23.5-x86_64-1
> -rw-r--r-- 1 root root    1580 Jan 22  2025
> libdbusmenu-qt-0.9.3+16.04.20160218-x86_64-3
> -rw-r--r-- 1 root root     943 Nov 29 08:21 libqtpas-4.4-x86_64-1_SBo
> -rw-r--r-- 1 root root    3628 Jan 22  2025 modemmanager-qt-5.90.0-x86_64-1
> -rw-r--r-- 1 root root   10825 Jan 22  2025
> networkmanager-qt-5.90.0-x86_64-1
> -rw-r--r-- 1 root root    3169 Jan 22  2025 polkit-qt-1-0.114.0-x86_64-1
> -rw-r--r-- 1 root root    3385 Jan 22  2025 pulseaudio-qt-1.3-x86_64-2
> -rw-r--r-- 1 root root  692964 Jan 23  2025
> qt5-5.15.3_20220318_e507d3e5-x86_64-1_slack15.0
> -rw-r--r-- 1 root root    7219 Jan 22  2025
> qt5-webkit-5.212.0_alpha4-x86_64-7
> -rw-r--r-- 1 root root 1137955 Dec 28 06:41 qt6-6.8.3-x86_64-2_SBo
> -rw-r--r-- 1 root root    1716 Jan 22  2025 qtkeychain-0.13.2-x86_64-1
> -rw-r--r-- 1 root root   19348 Mar 10  2025
> sphinxcontrib-qthelp-2.0.0-x86_64-1_
>
> In particular, Qt6 is very recent.
>
>
> On Sun, Mar 8, 2026 at 11:12 AM Jeremy Hansen <jebrhansen+SBo at gmail.com>
> wrote:
>
>> This built fine on a clean fully patched install of 15.0.
>>
>> Do you by chance have any of the optional dependencies listed in the
>> mkvtoolnix README installed? I can try again with any you have installed to
>> potentially confirm where the issue is.
>>
>> Below libraries are bundled with the source code and configure will use
>> system version if they are usable:
>>   * avilib
>>   * librmff
>>   * nlohmann-json
>>   * pugixml (on SBo)
>>   * utf8-cpp
>>   * fmt (on SBo)
>>   * libebml (on SBo)
>>   * libmatroska (on SBo)
>>
>> Installation of the above libraries are completely optional and internal
>> versions are well tested within the application.
>>
>> Jeremy
>>
>>
>> On Sun, Mar 8, 2026, 12:44 PM Luveh Keraph <1.41421 at gmail.com> wrote:
>>
>>> I have had mkvtoolnix running for some time. All of a sudden, I am
>>> getting the following:
>>>
>>> $ mkvtoolnix-gui
>>> mkvtoolnix-gui: error while loading shared libraries:
>>> libcmark.so.0.31.1: cannot open shared object file: No such file or
>>> directory
>>>
>>> libcmark.so is part of the cmark-0.31.2 package, which I updated on 21st
>>> February. So, I removed mkvtoolnix and tried to build it again. Alas, it
>>> won't:
>>>
>>>            CXX src/mkvtoolnix-gui/util/json_config_file.cpp
>>>            CXX src/mkvtoolnix-gui/util/kax_analyzer.cpp
>>>            CXX src/mkvtoolnix-gui/util/kax_info.cpp
>>>            CXX src/mkvtoolnix-gui/util/language_combo_box.cpp
>>>            CXX src/mkvtoolnix-gui/util/serial_worker_queue.cpp
>>>            CXX src/mkvtoolnix-gui/util/language_dialog.cpp
>>>            CXX src/mkvtoolnix-gui/util/language_display_widget.cpp
>>>            CXX src/mkvtoolnix-gui/util/media_player.cpp
>>>            CXX src/mkvtoolnix-gui/util/message_box.cpp
>>> src/mkvtoolnix-gui/util/media_player.cpp: In member function ‘void
>>> mtx::gui::Util::MediaPlayer::handleError(QMediaPlayer::Error)’:
>>> src/mkvtoolnix-gui/util/media_player.cpp:76:9: error: invalid use of
>>> incomplete type ‘class QDebug’
>>>    76 |   qDebug() << "MediaPlayer::handleError" << error <<
>>> p.errorReported;
>>> compilation terminated due to -Wfatal-errors.
>>>            CXX src/mkvtoolnix-gui/util/model.cpp
>>>            CXX src/mkvtoolnix-gui/util/modify_tracks_submenu.cpp
>>>            CXX src/mkvtoolnix-gui/util/recently_used_strings.cpp
>>>            CXX src/mkvtoolnix-gui/util/network_access_manager.cpp
>>>            CXX src/mkvtoolnix-gui/util/option_file.cpp
>>>            CXX src/mkvtoolnix-gui/util/process.cpp
>>>            CXX src/mkvtoolnix-gui/util/qgs_collapsible_group_box.cpp
>>>
>>> Any pointers on how to fix this would be much appreciated.
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