<div dir="auto">This built fine on a clean fully patched install of 15.0.<div dir="auto"><br></div><div dir="auto">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.</div><div dir="auto"><pre style="padding:1em 0px;background-color:rgb(255,255,255)"><font color="#000000"><span style="text-wrap-mode: wrap;">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.</span></font></pre><pre style="padding:1em 0px;background-color:rgb(255,255,255)">Jeremy</pre></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, Mar 8, 2026, 12:44 PM Luveh Keraph <<a href="mailto:1.41421@gmail.com">1.41421@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I have had mkvtoolnix running for some time. All of a sudden, I am getting the following:<div><br></div><div>$ mkvtoolnix-gui <br>mkvtoolnix-gui: error while loading shared libraries: libcmark.so.0.31.1: cannot open shared object file: No such file or directory</div><div><br></div><div>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:</div><div><br></div><div> CXX src/mkvtoolnix-gui/util/json_config_file.cpp<br> CXX src/mkvtoolnix-gui/util/kax_analyzer.cpp<br> CXX src/mkvtoolnix-gui/util/kax_info.cpp<br> CXX src/mkvtoolnix-gui/util/language_combo_box.cpp<br> CXX src/mkvtoolnix-gui/util/serial_worker_queue.cpp<br> CXX src/mkvtoolnix-gui/util/language_dialog.cpp<br> CXX src/mkvtoolnix-gui/util/language_display_widget.cpp<br> CXX src/mkvtoolnix-gui/util/media_player.cpp<br> CXX src/mkvtoolnix-gui/util/message_box.cpp<br>src/mkvtoolnix-gui/util/media_player.cpp: In member function ‘void mtx::gui::Util::MediaPlayer::handleError(QMediaPlayer::Error)’:<br>src/mkvtoolnix-gui/util/media_player.cpp:76:9: error: invalid use of incomplete type ‘class QDebug’<br> 76 | qDebug() << "MediaPlayer::handleError" << error << p.errorReported;<br>compilation terminated due to -Wfatal-errors.<br> CXX src/mkvtoolnix-gui/util/model.cpp<br> CXX src/mkvtoolnix-gui/util/modify_tracks_submenu.cpp<br> CXX src/mkvtoolnix-gui/util/recently_used_strings.cpp<br> CXX src/mkvtoolnix-gui/util/network_access_manager.cpp<br> CXX src/mkvtoolnix-gui/util/option_file.cpp<br> CXX src/mkvtoolnix-gui/util/process.cpp<br> CXX src/mkvtoolnix-gui/util/qgs_collapsible_group_box.cpp<br></div><div><br></div><div>Any pointers on how to fix this would be much appreciated.</div></div>
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