QProcess on installer provided Qt crashes.

damianatorrpm

Hello Forum,

I have a Qt version (from the installer) installed on Linux which is not the same as the system Qt libraries (different version).
When I try to start a new process using QProcess::startDetached() but this segfaults due to Qt%systemversion% private headers.
If I use the system Qt version all is good. How can I use the Qt version that comes with the installer and have QProcess launching the program?

jsulm

@damianatorrpm said in QProcess on installer provided Qt crashes.:

but this segfaults due to Qt%systemversion% private headers.

This sounds like you're mixing Qt libraries from different versions.
How do you start your app?
Which application is started via QProcess::startDetached()? Is it a Qt app? If so which Qt version was used to build it?

Kent-Dorfman

read up on how the link loader works in Linux, particularly the order that libraries are searched and how to override with LD_LIBRARY_PATH. No guarantees though, as mixing library version is always hit or miss.

damianatorrpm

Thank you for the replies!
I thought no one did reply (I subscribed - "Watching") but received no email... (not in spam as well)

=>LD_LIBRARY_PATH
thank you Kent I will do so