undefined reference to `qt_version_tag'

GastonMelo

Hi to all, Im really new to Qt and I download the lastest Open source version (im using linux Tumbleweed ) to develop a simple application with eclipse C++. What I do is to design a Gui in Qt and then convert it to cpp with the UIC file in the bin folder. When I try to compile in eclipse this error message is displayed "undefined reference to `qt_version_tag'".
What is qt_version_tag?
Can be solve this problem?
Is this a Eclipse error?
Also I was thinking to uninstall this version of Qt and install the previous version. How do I uninstall Qt? I search for MaintenaceTool (as mentioned in other forum) but I cant find it in the installation folder?

aha_1980

Hi @GastonMelo, welcome!

Have you already seen https://stackoverflow.com/questions/39871879/why-do-i-get-this-error-undefined-reference-to-qt-version-tag ?

How do I uninstall Qt? I search for MaintenaceTool (as mentioned in other forum) but I cant find it in the installation folder?

Can you please tell us, how you installed Qt?

GastonMelo

thanks for your reply aha_1980
I download the qt-unified-linux-x64-3.0.6-online.run, give permission and execute by console:
./qt-unified-linux-x64-3.0.6-online.run, and followed the Gui.

Yes I see that post, Thanks for your help. It solve my problem.

SGaist

Hi and welcome to devnet,

Do you have the Qt development packages from your distribution installed ?
Are you sure Eclipse is using the correct version of Qt ?

GastonMelo

I solved the qt_version_tag. But how can I uninstall Qt?

SGaist

The one from the installer ? Use the MaintenanceTool you find at the root of your Qt installation.

GastonMelo

I cant find it. I search for MaintenaceTool and cant find it. How do I install Qt? by console:
./qt-unified-linux-x64-3.0.6-online.run. Other way?

aha_1980

@GastonMelo said in undefined reference to `qt_version_tag':

./qt-unified-linux-x64-3.0.6-online.run

If you installed with that installer, you should really have a MaintenanceTool. For me it is in /opt/Qt, but that depends on your installation path.

The directory looks like that:

$ ll /opt/Qt
insgesamt 53160
drwxrwxrwx 8 root root     4096 Okt 15 14:51 ./
drwxr-xr-x 5 root root     4096 Apr 20  2018 ../
drwxrwxr-x 3 root root     4096 Okt 15 14:41 5.9.6/
-rw-rw-rw- 1 root root    12894 Okt 15 14:41 components.xml
drwxrwxr-x 2 root root     4096 Mär  7  2017 dist/
drwxrwxr-x 5 root root     4096 Okt 15 14:41 Docs/
drwxrwxr-x 5 root root     4096 Okt 15 14:41 Examples/
-rw-rw-rw- 1 root root  1779584 Okt 15 14:51 InstallationLog.txt
drwxr-xr-x 2 root root     4096 Feb  9  2018 Licenses/
-rwxr-xr-x 1 root root 32801464 Okt 15 14:35 MaintenanceTool*
-rw-r--r-- 1 root root 19768431 Okt 15 14:51 MaintenanceTool.dat
-rw-rw-rw- 1 root root    15760 Okt 15 14:51 MaintenanceTool.ini
-rw-rw-rw- 1 root root      362 Okt 15 14:51 network.xml
-rw-rw-r-- 1 root root     7991 Okt 25  2016 QtIcon.png
drwxrwxr-x 4 root root     4096 Okt 15 14:41 Tools/

Regards

GastonMelo

Nope. My installation folder is /home/user/Qt.

SGaist

And what exactly do you have in there ?

GastonMelo

i can tell you that not the MaintenanceTool. I search all folder (the hiddens too) and I cant find that file.

SGaist

Hence my question: what do you have in that folder ?

GastonMelo

I have this folders:

5.13.0
dist
Docs
Examples
Licenses
Tools

and this files:
components.xml
update.rcc

and the Qt.png icon

aha_1980

@GastonMelo strange. so it seems deleting the whole folder is only possible solution.

Btw: 5.13 is not official released yet (will be in few weeks), so better use 5.12.x for now.