Installation and Deployment

Ok. So I have found the solution. MySQL 8 replaces my_bool with bool. So if using a previous Qt version (before Qt 12 mostly), simply edit the qsql_mysql.cpp file in the src/plugins/sqldrivers/mysql directory and the following line after the #include statements. typedef bool my_bool Hopefully this helps someone out. Please note this is only required if using MySQL 8 on versions of QT before QT 12. QT 12+ supports native building of plugins for MySQL 8.

I found that I can do some configuration in my.cnf file (location: /Users/jarek/.bitnami/stackman/machines/xampp/volumes/root/etc/my.cnf). I have read somewhere that I need to copy it to /etc/my.cnf to have a possibility to change it. So I copied it there. Afterwards I changed the following: socket =/opt/lampp/var/mysql/mysql.sock -->> changed to -->> socket =/Users/jarek/.bitnami/stackman/machines/xampp/volumes/root/var/mysql/mysql.sock and plugin_dir=/opt/lampp/lib/mysql/plugin/ -->> changed to -->> plugin_dir=/Users/jarek/.bitnami/stackman/machines/xampp/volumes/root/lib/mysql/plugin/ Now when I do sudo mysql I have: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/Users/jarek/.bitnami/stackman/machines/xampp/volumes/root/var/mysql/mysql.sock' (61) so it didn't help...

@SGaist Thank you that was it, thanks a lot

@Thombou very helpful information indeed! :) What if you download those dlls to your exe lib and (there you did it already in the edit I see :p) hehe.. Very good, then you have complied the library successfully! Congratz :)

@Sheetal-Deshpande said in Linux application failed to run with error: qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "plugins/platforms/": Hi all, I have built QT 5.14.1 on linux with -qt-xcb flag in configure and when I try to run my application with these QT libs and plugins, I get following error: *****qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "plugins/platforms/" This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: eglfs (from plugins/platforms/), linuxfb (from plugins/platforms/), minimal (from plugins/platforms/), minimalegl (from plugins/platforms/), offscreen (from plugins/platforms/), vnc (from plugins/platforms/), webgl (from plugins/platforms/), xcb (from plugins/platforms/), eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, webgl, xcb.** I have set QT_QPA_PLATFORM_PLUGIN_PATH=plugins/platforms/ and placed this folder where my program is. Also I tried setting QT_DEBUG_PLUGINS=1 and ran, but could not find any error, except at the end which gives error as mentioned above. Also I ran ldd for exe, qxcb plugin so, and related so and all dependent libs were present in output. Strange thing is earlier I had built QT 5.13.2 with exact same configuration and same procedure to run the application and I did not get any error. Please suggest if you have any other thing that can be tried out here. Or is there any issue with my build that you suspect? Thanks in advance. Sheetal Update: Issue is resolved. I was adding one windows specific flag in main.cpp for creating qapplication, which was triggering windows plugin look up. So I removed it for linux code and its not giving that error.

I know this question is really old, but I like to left this for someone that might face the same problem. The most likely cause of this error is that the "java.exe" in the PATH it's from a JDK or JRE more recent than 1.8. A JDK or JRE 1.8 is required, the solution is to uninstall the JDK or JRE present and install the version1.8 of the JDK, or if like me, you can't do that, install the version1.8 of the JDK in another location and modify the PATH previous to launch QtCreator, something like: SET "PATH=path\to\jdk1.8;%PATH%".

Was just a maintenance going on when I was trying to download. Thanks fellas.

@ab-90 said in Explanation configure options of QT for cross-compiling: CMake file where I set CMAKE_TOOLCHAIN_FILE variable in order to set C/CXX compiler and Sysroot path. I'm not well versed on CMake, but usually the path for the compiler and the sysroot folder are two different locations the build procedure is looking for that files inside the root of my host PC e not on my sysroot yes, it looks like so it seems you need to modify your CMake file(s) to reflect your environment there is some error in configuration of QT libraries I'd say problem with your build procedure, not the Qt libraries since with a simple hello world C++ program everything work. Do you mean a simple cross-compiled Qt app running Ok on the target device?

It finally works. I just had to wait approx. 15 minutes, then the download started. The update worked like charm. I tried the maintenance tool again after the update, and now it works fine. Thanks for your help. Ove

Hi and welcome to devnet, Might be a silly question but did you check that the architecture matches ? Did you build from a clean state ?

Hi and welcome to the forums I think its a font issue. like its not finding the fonts. https://forum.qt.io/topic/74357/no-text-in-compiled-application How does QtCreator look ? the same ?

@Zelda4 As already explained: the architecture of the installer or the QtCreator IDE are completely unrelated! Why do you care? Use Qt 64bit you installed to build your application and you will get a 64bit app...

How to find the mirror site? There isn't any option to set the mirror site in the installer tool.

I see. Thank you for your help!

@sierdzio said in Silent installation of QT 4.6.2 on Windows 10: windeployqt Thank you for the fast and informative replay. This is a small project that we support and we are trying to change as little as possible. It totally slipped from my mind that for deployment machines, I just need the DLLs. Will definitely check that!

@jsulm Uhmm now I'm starting to understand why @sierdzio told me this is not easy. I will do some google search on this subject, thanks for guidance.

thanks. change: -qmldir=/Users/username/myproject/trytodolist/ It works fine.