Release Qt program. Dependencies trouble

Question

I have the application .exe and the requested Qt .dll files in the same folder. I have also created the folder "platforms" and put qwindows.dll in there.

The program starts, but no nothing is shown on the screen, just white.

I don't know how to debug this.

I tried Dependency Walker, but I don't know/understand how to use the information the tool provides me. This is the output when I load my .exe file with Dependency Walker:

Answer 1

Copying libEGL.dll from Qt should resolve the GPSVC.dll and IESHIMS.dll dependency issue (has for me in the past). However you will encounter issues with qt 5.0.1 and GCC 4.7, as they are incompatible. Qt 4.8 is however compatible with GCC 4.4, and QT 5.2 is compatible with GCC 4.8.0, either of which will ensure a more trouble-free compilation:)

You may have to incorporate the msvc2010 c++ distributable package from 32 bit download or 64 bit download before your app can run independently

Also, for release version of QT apps you may well have to build your own QT from source, as the distributed version only used to include support for debug mode (as discussed here

There are also some trouble-shooting guides at paulnettleship.com which, whilst they require some changes to point to the right directories for more modern versions than Qt 4.7, are still nice, short useful reference guides.

Another good guide to compiling your own Qt (VS again)is located here, whilst there is a Qt MinGW guide here which gives a walkthrough of how to compile Qt Desktop using minGW. There is another (in my opinion) more straightforward guide at http://wiki.batcom-it.net/ which walks through the actual build steps and is quite reasonably updated.