deb package & Qt 6.4.2 to old #905

Pinin72 · 2025-12-09T11:39:43Z

Pinin72
Dec 9, 2025

I downloaded the source code and tried to compile it on Ubuntu 24.04.3. I installed the required dependencies, but unfortunately Ubuntu only provides Qt 6.4.2 and QMapShack cannot be compiled with that version. I haven’t been using Linux for very long. Is there a possibility to provide a .deb package? Using AppImages is not an option for me

kiozen · 2025-12-09T12:18:08Z

kiozen
Dec 9, 2025
Maintainer

If there is no official Debian package I guess no one else will create one. You can install latest Qt6 from the Qt webpage using it to compile QMapShack.

0 replies

JFritzle · 2025-12-09T14:09:13Z

JFritzle
Dec 9, 2025
Collaborator

I am on Ubuntu 24.04.3 too. No need to compile Qt yourself.

Download Linux x64 Qt installer for Open Source use.
Run installer and install MaintenanceTool into a folder of your choise, e.g. into folder /opt/Qt6:

  /opt/Qt6$ ls
  6.10.1          InstallationLog.txt  MaintenanceTool.dat
  6.9.3           installer.dat        MaintenanceTool.ini
  components.xml  installerResources   network.xml
  dist            licenseInfo.txt      Tools
  Docs            Licenses
  Examples        MaintenanceTool

Run MaintenanceTool and choose to download either Qt 6.9.3 and/or Qt 6.10.1
-> Appropriate Qt files for Ubuntu 24.04.3 are downloaded and installed: all you need to build and run QMS.
Configure cmake for QMS to use cmake files currently downloaded
Build QMS and install to default folder = /usr/local/bin
Run QMS, e.g. by

   export LD_LIBRARY_PATH=/opt/Qt6/6.10.1/gcc_64/lib
   /usr/local/bin/qmapshack

0 replies

Pinin72 · 2025-12-10T11:14:47Z

Pinin72
Dec 10, 2025
Author

Hi JFritzle, I install all dependencies and Qt 6.10.1 (see pic):

However, I have the problem that when I run ccmake ../qmapshack-V_1.19.0
and then select Configure, no Qt modules (e.g. Qt6Core, .......) are found, even though they are present in the installation folder under: …/Qt/6.10.1/gcc_64/lib/cmake
I think ccmake is still using the old Qt version that comes with Ubuntu, instead of the newly installed Qt version.
Do you have any tips on what else needs to be configured?

1 reply

JFritzle Dec 10, 2025
Collaborator

Sure, cmake does not find Qt's cmake files by itself. You have to specify paths yourself.

Output from ccmake:

 BIN_INSTALL_DIR                  /usr/local/bin
 BUILD_FOR_LOCAL_SYSTEM           OFF
 BUILD_QMAPSHACK                  ON
 BUILD_QMAPTOOL                   ON
 CMAKE_BUILD_TYPE                 RelWithDebInfo
 CMAKE_INSTALL_PREFIX             /usr/local
 DATA_INSTALL_DIR                 /usr/local/share
 DATA_INSTALL_PREFIX              /usr/local/share
 EXEC_INSTALL_PREFIX              /usr/local
 HTML_INSTALL_DIR                 /usr/local/share/doc/HTML
 ICON_INSTALL_DIR                 /usr/local/share/icons
 INCLUDE_INSTALL_DIR              /usr/local/include
 INFO_INSTALL_DIR                 /usr/local/share/info
 LIBEXEC_INSTALL_DIR              /usr/local/libexec
 LIB_INSTALL_DIR                  /usr/local/lib
 LIB_SUFFIX
 LOCALE_INSTALL_DIR               /usr/local/share/locale
 MAN_INSTALL_DIR                  /usr/local/share/man
 PLUGIN_INSTALL_DIR               /usr/local/lib/qmapshack
 PROJ_DIR                         /usr/lib/x86_64-linux-gnu/cmake/proj
 QT_ADDITIONAL_HOST_PACKAGES_PR   
 QT_ADDITIONAL_PACKAGES_PREFIX_   
 Qt6ConcurrentPrivate_DIR         /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6ConcurrentPrivate
 Qt6Concurrent_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Concurrent
 Qt6Core5CompatPrivate_DIR        /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Core5CompatPrivate
 Qt6Core5Compat_DIR               /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Core5Compat
 Qt6CorePrivate_DIR               /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6CorePrivate
 Qt6CoreTools_DIR                 /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6CoreTools
 Qt6Core_DIR                      /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Core
 Qt6DBusPrivate_DIR               /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6DBusPrivate
 Qt6DBusTools_DIR                 /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6DBusTools
 Qt6DBus_DIR                      /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6DBus
 Qt6ExamplesAssetDownloaderPriv   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6ExamplesAssetDownloaderPrivate
 Qt6GuiPrivate_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6GuiPrivate
 Qt6GuiTools_DIR                  /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6GuiTools
 Qt6Gui_DIR                       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Gui
 Qt6HelpPrivate_DIR               /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6HelpPrivate
 Qt6Help_DIR                      /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Help
 Qt6LinguistTools_DIR             /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6LinguistTools
 Qt6NetworkPrivate_DIR            /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6NetworkPrivate
 Qt6Network_DIR                   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Network
 Qt6OpenGLPrivate_DIR             /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6OpenGLPrivate
 Qt6OpenGLWidgetsPrivate_DIR      /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6OpenGLWidgetsPrivate
 Qt6OpenGLWidgets_DIR             /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6OpenGLWidgets
 Qt6OpenGL_DIR                    /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6OpenGL
 Qt6PositioningPrivate_DIR        /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6PositioningPrivate
 Qt6Positioning_DIR               /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Positioning
 Qt6PrintSupportPrivate_DIR       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6PrintSupportPrivate
 Qt6PrintSupport_DIR              /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6PrintSupport
 Qt6QmlAssetDownloaderPrivate_D   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlAssetDownloaderPrivate
 Qt6QmlAssetDownloader_DIR        /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlAssetDownloader
 Qt6QmlCompilerPlusPrivateTools   Qt6QmlCompilerPlusPrivateTools_DIR-NOTFOUND
 Qt6QmlIntegrationPrivate_DIR     /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlIntegrationPrivate
 Qt6QmlIntegration_DIR            /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlIntegration
 Qt6QmlMetaPrivate_DIR            /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlMetaPrivate
 Qt6QmlMeta_DIR                   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlMeta
 Qt6QmlModelsPrivate_DIR          /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlModelsPrivate
 Qt6QmlModels_DIR                 /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlModels
 Qt6QmlPrivate_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlPrivate
 Qt6QmlTools_DIR                  /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlTools
 Qt6QmlWorkerScriptPrivate_DIR    /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlWorkerScriptPrivate
 Qt6QmlWorkerScript_DIR           /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QmlWorkerScript
 Qt6Qml_DIR                       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Qml
 Qt6QuickPrivate_DIR              /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QuickPrivate
 Qt6QuickTools_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QuickTools       
 Qt6QuickWidgetsPrivate_DIR       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QuickWidgetsPrivate
 Qt6QuickWidgets_DIR              /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6QuickWidgets      
 Qt6Quick_DIR                     /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Quick      
 Qt6SqlPrivate_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6SqlPrivate 
 Qt6Sql_DIR                       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Sql      
 Qt6ToolsTools_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6ToolsTools
 Qt6Tools_DIR                     /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Tools      
 Qt6UiPlugin_DIR                  /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6UiPlugin 
 Qt6UiToolsPrivate_DIR            /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6UiToolsPrivate
 Qt6UiTools_DIR                   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6UiTools
 Qt6WebChannelPrivate_DIR         /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebChannelPrivate
 Qt6WebChannel_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebChannel
 Qt6WebEngineCorePrivate_DIR      /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebEngineCorePrivate
 Qt6WebEngineCoreTools_DIR        /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebEngineCoreTools
 Qt6WebEngineCore_DIR             /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebEngineCore
 Qt6WebEngineWidgetsPrivate_DIR   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebEngineWidgetsPrivate
 Qt6WebEngineWidgets_DIR          /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WebEngineWidgets
 Qt6WidgetsPrivate_DIR            /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WidgetsPrivate
 Qt6WidgetsTools_DIR              /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6WidgetsTools 
 Qt6Widgets_DIR                   /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Widgets             
 Qt6XmlPrivate_DIR                /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6XmlPrivate   
 Qt6Xml_DIR                       /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6Xml   
 Qt6_DIR                          /opt/Qt6/6.10.1/gcc_64/lib/cmake/Qt6
 QuaZip-Qt6_DIR                   /usr/lib/x86_64-linux-gnu/cmake/QuaZip-Qt6-1.4 
 SBIN_INSTALL_DIR                 /usr/local/sbin
 SHARE_INSTALL_PREFIX             /usr/local/share
 SOUND_INSTALL_DIR                /usr/local/share/sounds
 SYSCONF_INSTALL_DIR              /usr/local/etc
 UPDATE_TRANSLATIONS              ON
 UPDATE_TRANSLATIONS_PURGE_OBSO   OFF
 USE_QT6DBus                      ON
 XDG_APPS_DIR                     /usr/local/share/applications
 XDG_DIRECTORY_DIR                /usr/local/share/desktop-directories       
 XKB_INCLUDE_DIR                  /usr/include
 XKB_LIBRARY                      /usr/lib/x86_64-linux-gnu/libxkbcommon.so    
 tiff_DIR                         tiff_DIR-NOTFOUND

kiozen · 2025-12-10T13:19:47Z

kiozen
Dec 10, 2025
Maintainer

QtCreator passes some variables when calling cmake:

ccmake -DQT_QMAKE_EXECUTABLE:FILEPATH=/opt/Qt6/6.10.1/gcc_64/bin/qmake  -DCMAKE_PREFIX_PATH:PATH=/opt/Qt6/6.10.1/gcc_64  <path to qmapshack root>

By that cmake should be able to find everything needed. Cross check the paths in my example to match the ones in your system

0 replies

Pinin72 · 2025-12-11T10:34:31Z

Pinin72
Dec 11, 2025
Author

Thanks/Danke to both of you — QMapShack 1.19.0 is now running on Ubuntu 24.04.3!

ccmake shows no errors during configuration
make completes without any issues
In the folder build_QMapShack/bin there are four files, including QMapShack, which can be started with a double-click

Everything I had to install (Optional: cmake-qt-gui, the graphical user interface for CMake):

Packages I installed via Synaptic Package Manager:

build-essential
libgl1-mesa-dev
QuaZip (Qt6 V1.x): libquazip1-qt6-1t64
CMake: CMake, cmake-curses-gui

Packages I installed via Synaptic Package Manager during the ccmake config process:

libcups2-dev
libgdal-dev
libroutino-dev
libquazip1-qt6-dev
libalglib-dev

Already included in Ubuntu 24.04.3

Make
GDAL (at least 3.0.0)
Proj4 (at least 9.0.0)
Routino (at least 3.1)
C++ compiler with C++11 support

When installing Qt, I deselected unnecessary components and enabled the required ones (see the two screenshots)

0 replies

Pinin72 · 2025-12-12T11:38:31Z

Pinin72
Dec 12, 2025
Author

After installing QMapShack on Ubuntu 24.04.03 with make install, you need to edit the file
/etc/ld.so.conf.d/your_lib.conf and add the path to the new Qt library directory: Example /opt/Qt/6.10.1/gcc_64/lib

Then run Update: sudo ldconfig

Start QMapShack: qmapshack

1 reply

JFritzle Dec 12, 2025
Collaborator

Adding Qt 6.10.1 library path to /etc/ld.so.conf.d/your_lib.conf makes each Qt6 executable to use Qt 6.10.1, not only QMS.
This may make problems with Qt6 executables installed by apt package manager which depend on Qt6 version installed by apt package manager.

As already mentioned above, the saver solution is to run QMS by

export LD_LIBRARY_PATH=/opt/Qt6/6.10.1/gcc_64/lib
/usr/local/bin/qmapshack

without need to edit.

Pinin72 · 2025-12-12T12:29:02Z

Pinin72
Dec 12, 2025
Author

Your solution didn’t work for me. I tried it several times, and yes, I adjusted the path and there’s no mistake in it.
It also didn’t work in the .bashrc and checked with source ~/.bashrc

My your_lib.conf looks like this I added the line at the bottom. I’ll keep an eye on it

libc default configuration
/usr/local/lib
/opt/Qt/6.10.1/gcc_64/lib

1 reply

JFritzle Dec 12, 2025
Collaborator

At my site, solution does work. If my solution didn't work, then probably your /opt/Qt/6.10.1/gcc_64/lib doesn't contain all libs required by QMS.

Run command ldd /usr/local/bin/qmapshack|grep libQt6 . All Qt6 libs reported must get found in your /opt/Qt/6.10.1/gcc_64/lib folder and never in /lib/x86_64-linux-gnu folder. Do they?

Pinin72 · 2025-12-12T18:33:01Z

Pinin72
Dec 12, 2025
Author

Yes, all Qt6 libs found, with my libc.conf

# libc default configuration
/usr/local/lib
/opt/Qt/6.10.1/gcc_64/lib

pinin@iMac:~$ ldd /usr/local/bin/qmapshack|grep libQt6
	libQt6Xml.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Xml.so.6 (0x000077f7cbc48000)
	libQt6UiTools.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6UiTools.so.6 (0x000077f7cbbab000)
	libQt6WebEngineWidgets.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6WebEngineWidgets.so.6 (0x000077f7cbb82000)
	libQt6Help.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Help.so.6 (0x000077f7cad61000)
	libQt6PrintSupport.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6PrintSupport.so.6 (0x000077f7cac72000)
	libQt6WebEngineCore.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6WebEngineCore.so.6 (0x000077f7bc600000)
	libQt6Qml.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Qml.so.6 (0x000077f7bbe00000)
	libQt6Network.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Network.so.6 (0x000077f7bba00000)
	libQt6Widgets.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Widgets.so.6 (0x000077f7bb200000)
	libQt6Sql.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Sql.so.6 (0x000077f7cac19000)
	libQt6Gui.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Gui.so.6 (0x000077f7ba600000)
	libQt6DBus.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6DBus.so.6 (0x000077f7c8f25000)
	libQt6Core5Compat.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Core5Compat.so.6 (0x000077f7c8ec2000)
	libQt6Core.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Core.so.6 (0x000077f7b9e00000)
	libQt6OpenGLWidgets.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6OpenGLWidgets.so.6 (0x000077f7c93c2000)
	libQt6OpenGL.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6OpenGL.so.6 (0x000077f7c8869000)
	libQt6QuickWidgets.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6QuickWidgets.so.6 (0x000077f7c8e9e000)
	libQt6WebChannel.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6WebChannel.so.6 (0x000077f7bc538000)
	libQt6Positioning.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Positioning.so.6 (0x000077f7bc492000)
	libQt6Quick.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6Quick.so.6 (0x000077f7b8e00000)
	libQt6QmlMeta.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6QmlMeta.so.6 (0x000077f7c8e70000)
	libQt6QmlModels.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6QmlModels.so.6 (0x000077f7bbc8b000)
	libQt6QmlWorkerScript.so.6 => /opt/Qt/6.10.1/gcc_64/lib/libQt6QmlWorkerScript.so.6 (0x000077f7c8854000)

No with your command and with original libc.conf
export LD_LIBRARY_PATH=/opt/Qt/6.10.1/gcc_64/lib/lib

# libc default configuration
/usr/local/lib

pinin@iMac:~$ export LD_LIBRARY_PATH=/opt/Qt/6.10.1/gcc_64/lib/lib
pinin@iMac:~$ ldd /usr/local/bin/qmapshack|grep libQt6
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6Core5Compat.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6WebEngineWidgets.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6UiTools.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6Qml.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6Help.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6WebEngineCore.so.6: no version information available (required by /usr/local/bin/qmapshack)
/usr/local/bin/qmapshack: /lib/x86_64-linux-gnu/libQt6Core.so.6: version `Qt_6.10' not found (required by /usr/local/bin/qmapshack)
	libQt6Xml.so.6 => /lib/x86_64-linux-gnu/libQt6Xml.so.6 (0x0000750c5e88f000)
	libQt6UiTools.so.6 => /lib/x86_64-linux-gnu/libQt6UiTools.so.6 (0x0000750c5e807000)
	libQt6WebEngineWidgets.so.6 => /lib/x86_64-linux-gnu/libQt6WebEngineWidgets.so.6 (0x0000750c5e7e4000)
	libQt6Help.so.6 => /lib/x86_64-linux-gnu/libQt6Help.so.6 (0x0000750c5e759000)
	libQt6PrintSupport.so.6 => /lib/x86_64-linux-gnu/libQt6PrintSupport.so.6 (0x0000750c5bd48000)
	libQt6WebEngineCore.so.6 => /lib/x86_64-linux-gnu/libQt6WebEngineCore.so.6 (0x0000750c51e00000)
	libQt6Qml.so.6 => /lib/x86_64-linux-gnu/libQt6Qml.so.6 (0x0000750c51800000)
	libQt6Network.so.6 => /lib/x86_64-linux-gnu/libQt6Network.so.6 (0x0000750c51669000)
	libQt6Widgets.so.6 => /lib/x86_64-linux-gnu/libQt6Widgets.so.6 (0x0000750c50e00000)
	libQt6Sql.so.6 => /lib/x86_64-linux-gnu/libQt6Sql.so.6 (0x0000750c5bcfd000)
	libQt6Gui.so.6 => /lib/x86_64-linux-gnu/libQt6Gui.so.6 (0x0000750c50600000)
	libQt6DBus.so.6 => /lib/x86_64-linux-gnu/libQt6DBus.so.6 (0x0000750c5b74b000)
	libQt6Core5Compat.so.6 => /lib/x86_64-linux-gnu/libQt6Core5Compat.so.6 (0x0000750c5b6ef000)
	libQt6Core.so.6 => /lib/x86_64-linux-gnu/libQt6Core.so.6 (0x0000750c50000000)
	libQt6OpenGLWidgets.so.6 => /lib/x86_64-linux-gnu/libQt6OpenGLWidgets.so.6 (0x0000750c5d9f2000)
	libQt6QuickWidgets.so.6 => /lib/x86_64-linux-gnu/libQt6QuickWidgets.so.6 (0x0000750c5b6d0000)
	libQt6Quick.so.6 => /lib/x86_64-linux-gnu/libQt6Quick.so.6 (0x0000750c4f000000)
	libQt6WebChannel.so.6 => /lib/x86_64-linux-gnu/libQt6WebChannel.so.6 (0x0000750c4bd5a000)
	libQt6Positioning.so.6 => /lib/x86_64-linux-gnu/libQt6Positioning.so.6 (0x0000750c4b55d000)
	libQt6OpenGL.so.6 => /lib/x86_64-linux-gnu/libQt6OpenGL.so.6 (0x0000750c4b1c1000)
	libQt6QmlModels.so.6 => /lib/x86_64-linux-gnu/libQt6QmlModels.so.6 (0x0000750c4b101000)
pinin@iMac:~$

1 reply

JFritzle Dec 12, 2025
Collaborator

My command was export LD_LIBRARY_PATH=/opt/Qt/6.10.1/gcc_64/lib,
your command was export LD_LIBRARY_PATH=/opt/Qt/6.10.1/gcc_64/lib/lib -> cannot work, of course.

Pinin72 · 2025-12-12T21:39:32Z

Pinin72
Dec 12, 2025
Author

Damn, I don’t know how I could have made this mistake. Now I also understand why it didn’t work with the ~/.bashrc file, there’s the same copy and paste error in there. All of your previously mentioned commands are now working as you described. Thanks!
One last question: What’s the downside of adding the command to the ~/.bashrc instead of the your_lib.conf?

0 replies

JFritzle · 2025-12-13T07:56:10Z

JFritzle
Dec 13, 2025
Collaborator

Library path set in your_lib.conf file affects each executable file, regardless of the user and how it is getting started..
Library path set in ~/.bashrc file affects each executable file run by current user within a bash shell.
This is especially the case when run from a terminal's command line.
This is not the case when run different than from a bash shell.
Thus, /usr/local/bin/qmapshack will run successfully from a terminal's command line,
but it will not run when double-clicked in file manager (Nautilus, Nemo, ...) nor when directly called from a desktop starter.

0 replies

kiozen · 2025-12-13T09:54:45Z

kiozen
Dec 13, 2025
Maintainer

Just to phrase it a bit more drastically:

If you place the path in /etc no Qt application that has been installed by apt will work
If you place it into .bashrc no Qt application that has been installed by apt and is started from a bash command prompt will work
The above applies to .profile, too

Only if you put the export LD_LIBRARY_PATH and the qmapshack execution into a shell script and call this shell script, all Qt applications will start as expected.

However if you linked gpx files to be opened by qmapshack it won't work as this invokes qmapshack directly. But you can link it with the script and forward all parameters passed to the script to the qmapshack call.

0 replies

Pinin72 · 2025-12-13T18:10:34Z

Pinin72
Dec 13, 2025
Author

I’ve discovered something interesting, maybe you can explain it to me.

After I compiled QMapShack, there were 4 files in the build_QMapShack/bin folder, including:

qmapshack (300 MB)

qmaptool (41 MB)

When I click on these files in the file manager, they start, for example, QMapShack 1.19 in English.
The file behaves like a qmapshack.exe under Windows.

After installing with make install, these files were placed in the /usr/local/bin folder.
When I click on them in the file manager, QMapShack does not start. They are the same size, but have a different SHA256 checksum.

Now, if I move the 4 files from the build_QMapShack/bin folder to the /usr/local/bin folder and overwrite the existing ones, they start with a double-click, and then QMapShack 1.19 starts in German, my native language. Even if I click on my old QMapShack 1.17 (from Ubuntu) garmin-icon in the taskbar, QMapShack 1.19 starts in German.
When I enter qmapshack command in the terminal, QMapShack 1.19 appears in German.

I haven’t set any paths anywhere, I just copied the 4 files.
your_lib.conf and .bashrc are empty.

What is the difference between the files?
Why do the original files in the build_QMapShack/bin folder start, but the original ones in /usr/local/bin don’t?

1 reply

JFritzle Dec 13, 2025
Collaborator

Have a look into file build_QMapShack/src/qmapshack/cmake_install.cmake. Installation into /usr/local/bin alters executable's embedded rpath making it independent from Qt's development environment and it's installation path used when building. Installed executable now looks for Qt libraries according to library lookup rules:
First looking in path defined by LD_LIBRARY_PATH then looking in loaders defined lookup chain.

Did you exactly read and understand this comment where I explained, why /usr/local/bin/qmapshack cannot get started from file manager?

Pinin72 · 2025-12-13T19:17:58Z

Pinin72
Dec 13, 2025
Author

I think I understand your comment.
That's exactly the point: If I move the 4 files from the build_QMapShack/bin folder to the /usr/local/bin/ folder, overwrite the existing ones, I can start them all from the file manager, create shortcuts or a double-click on a GPX file and QMapShack starts automatically. This is exactly what users want on Ubuntu 24.04.03. I don't want a qmapshack executable with path to be independent of the Qt 6.10.1 development environment, and I don't want QMapShack to search for the old QT Ubuntu versions.
Qt 6.10.1 & QMapShack 1.19 are a package like an Appimage, and neither I nor Ubuntu Update should change that. If there are no disadvantages, I believe this is the perfect solution

0 replies

deb package & Qt 6.4.2 to old #905

Uh oh!

Pinin72 Dec 9, 2025

Replies: 13 comments · 5 replies

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kiozen Dec 9, 2025 Maintainer

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JFritzle Dec 9, 2025 Collaborator

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Pinin72 Dec 10, 2025 Author

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JFritzle Dec 10, 2025 Collaborator

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kiozen Dec 10, 2025 Maintainer

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Pinin72 Dec 11, 2025 Author

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Pinin72 Dec 12, 2025 Author

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JFritzle Dec 12, 2025 Collaborator

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Pinin72 Dec 12, 2025 Author

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JFritzle Dec 12, 2025 Collaborator

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Pinin72 Dec 12, 2025 Author

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JFritzle Dec 12, 2025 Collaborator

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Pinin72 Dec 12, 2025 Author

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JFritzle Dec 13, 2025 Collaborator

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kiozen Dec 13, 2025 Maintainer

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Uh oh!

Pinin72 Dec 13, 2025 Author

Uh oh!

Uh oh!

JFritzle Dec 13, 2025 Collaborator

Uh oh!

Uh oh!

Pinin72 Dec 13, 2025 Author

Pinin72
Dec 9, 2025

Replies: 13 comments 5 replies

kiozen
Dec 9, 2025
Maintainer

JFritzle
Dec 9, 2025
Collaborator

Pinin72
Dec 10, 2025
Author

JFritzle Dec 10, 2025
Collaborator

kiozen
Dec 10, 2025
Maintainer

Pinin72
Dec 11, 2025
Author

Pinin72
Dec 12, 2025
Author

JFritzle Dec 12, 2025
Collaborator

Pinin72
Dec 12, 2025
Author

JFritzle Dec 12, 2025
Collaborator

Pinin72
Dec 12, 2025
Author

JFritzle Dec 12, 2025
Collaborator

Pinin72
Dec 12, 2025
Author

JFritzle
Dec 13, 2025
Collaborator

kiozen
Dec 13, 2025
Maintainer

Pinin72
Dec 13, 2025
Author

JFritzle Dec 13, 2025
Collaborator

Pinin72
Dec 13, 2025
Author