gdb not working in Qt creator

dahu74fr · 13 Jul 2022, 12:08

Hello
i installed the last version of Qt on my computer with the online installer the 7.02 version.
everything works fine except the debugger. it says gdb not recognized.
i look at the installation and gdb.exe is present in the installation.
if i open a command line in the directory where gdb.exe is and i type gdb -- version, no return for this command.
i made the same installation on a friend computer that i was preparing and everything is ok.
gdb --version returns me the version installed.
someone has a solution for this issue ?

thanks you very much for your eventual solutions
best regards

jsulm · wrote on 13 Jul 2022, 12:08

@dahu74fr You already have a thread for that: https://forum.qt.io/topic/137836/qt-creator-7-2-gdb-not-recognized
Did you try to disable anti-virus software? If gdb does not work from command line then the problem is not QtCreator.

cristian-adam · wrote on 13 Jul 2022, 12:18

You have a broken MinGW installation. Please get the latest MinGW package mentioned at https://wiki.qt.io/MinGW

This is what I get when I run these commands:

c:\mingw64\bin
$ dir | findstr gdb
21/03/2022  05:50             4.587 gdb-add-index
21/03/2022  05:50            79.599 gdb.exe
21/03/2022  05:50        12.583.623 gdborig.exe
21/03/2022  05:50           595.832 gdbserver.exe

c:\mingw64\bin
$ gdb --version
GNU gdb (GDB) 11.2
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Note the size of gdb.exe, it's small compared to gdborig.exe, which makes it just a frontend.

If I rename gdborig.exe to something else I also don't get any output from the gdb.exe.

Just check your MinGW installation and you should be fine.

cristian-adam · 13 Jul 2022, 13:27

If you have the same files and they are all complete, then it means that for some reason the gdb.exe frontend executable can't launch gdborig.exe.

If this is the case, then some more details are needed. Process Monitor can provide such details.

dahu74fr · wrote on 13 Jul 2022, 13:27

@cristian-adam i have the same files than on the friend computer whitch as Qt runing fine in debug.
i have also copied all the installation of Qt working on my friend computer on my computer with the same issue.
i think it is a configuration or a key in the register of my computer who make this issue.
i don't know how to use process monitor.
Thanks.

cristian-adam · wrote on 13 Jul 2022, 14:24

gdb.exe should simply start if you copy the directory structure. Have you tried unpacking x86_64-11.2.0-release-posix-seh-rt_v9-rev3.7z and running gdb from there?

If it doesn't work, can you disable the anti-virus?