3rd Party Software

Depending on your project and constraints, you will have to use an older version of Qt that supports that outdated version of Visual Studio. I would first check with LDRA to ensure with them that their tools can be used with more recent versions of Visual Studio.

@JonB Exactly, downloaded libusb version for mingw 64 and now it's working. Thank u guys for support.

Did you manage to compile qwt for iOS?

@JoeCFD I was able to find an answer to this question by doing this: find_package(PkgConfig REQUIRED) pkg_check_modules(ZBar REQUIRED IMPORTED_TARGET zbar) target_link_libraries(camera PUBLIC PkgConfig::ZBar) Since I anyway had pkg-config, I found that package and then zbar using that package and then linked it with the libraries.

This thread on the OpenFrameworks forum might help.

I found the problems: I forgot to include the libraries hdf5_hl hdf5_hl_cpp and hdf5_hl I had 2 versions of hdf5 installed: 12.2 and 14.0 I had to uninstall 12.2. Now, it seems to work. Thanks to all.

Was able to resolve it by adding LIBS += -lWindowsApp to *.pro file. Thread can be closed.

@SGaist Great Thank you this, I know that qt has its own MQTT module just I had already developed my code for MQTT using the mosquitto library before I knew I was going to be making a GUI using QT.

Fixed the issue. Turns out it was something with my laptop. I had gotten a secondary laptop that had the same environment, all Windows 10, downloaded the NIDAQmx software, and it connected to my Qt application perfectly fine. Very odd, unsure why this happened. I went about the installation process the same on both laptops. I hope nobody ever has to go through this issue again, but if you are, might want to try on a new laptop..Worked for me!

@Schloern To run ros packages, it is necessary to run the setup.bash file, for example, the setup.bash file should be run in the linux operating system. source /opt/ros/humble/setup.bash Start the QT Creator application in the terminal where you enter the setup.bash controls. step 1: Open terminal and enter "source /opt/ros/humble/setup.bash" command. Note: this is ros humble enter your own setup.bash file step 2: Open the QT Creator application from the terminal you included ros2 step 3: If you want to work simultaneously with ROS, use threads.

@Neptunus I would expect these to be resolved by linking with kernel32.lib? Compare the linker lines generated from VS vs Creator? I don't know what Win32_Interop.lib is.

[image: 7a72db15-9d25-4ea5-a2ae-00142f6c04cd.png] Hey Can you help me how to enable the MSVC compiler , I couldnt choose it.

I found out while replying to your response that I tried to install with qmake at location "C:/Qt/5.15.2/mingw81_64/bin". Instead I changed path variable of qmake to location "C:/Qt/5.15.2/android/lib". Now it compiled. Thank you for your help @SGaist . :D

@CutiUser said in Error "symbol lookup error", "undefined symbol: SSLv3_client_method" using libQtNetwork.so.4: I guess I can't get openssl v1.1.1 and v1.1.0 to work together... That actually should work as version number is usually part of the library name or symbolic link. I think Qt4 never supported LibSSL 1.1

@jsulm said in QT 5.12.11 add mng support: Then please check the config.log file - probably something is missing (some library), so it is disabled. Thank you for your advice. Finally , I found the disable configuration is in "/src/imageformats/configure.json" , change the mng condition to features.imageformatplugin ,this works.

@Chris-Kawa The doc also says that you need to define FTD2XX_STATIC if you're using the static library. I read this in the documentation, but tried to define into the source code. After you mentioned that I put DEFINES += FTD2XX_STATIC into the .pro file and that is works. Thank you all for help.