QPrinter problem QT 5.9.2 and 5.8

[Krasnoiark]

Hi, I am running on Windows 10 and Ubuntu 17 LTS.
I am using Mingw32 compiler.
I have run qmake after adding my QT variable, I have also deleted the build file, re-run the qmake and re built and same errors.

[Krasnoiark]

This is my code and the .pro file

[mrjj]

Hi
QT += printsupport

and
#include <QPrinter>

does it for me on Qt 5.9/win 10.

[Krasnoiark]

Hi
Thanks for the response but it tells me that QPrinter is no such file or directory. Won't let me compile.

[jsulm]

@Krasnoiark How did you install Qt?

[Krasnoiark]

I went on the QT website, downloaded the open source installer.
Downloaded and Installed QT 5.9.2 MinGW 5.3.0 32 bit. And I checked all the tools.

[mrjj]

@Krasnoiark
That sounds pretty ok.

Can you try this default project and tell if it also gives errors?
https://www.dropbox.com/s/wxcdigflnwbeq4d/myprinter.zip?dl=0

Also, you are targeting Desktop, correct ?
Its not bare metal project or something like that?

[jsulm]

@Krasnoiark Most probably not the reason for the problem, but why do you add core and gui twice to QT?

[Krasnoiark]

It compiles and there is no errors

[mrjj]

@Krasnoiark
So i think your .pro or kit selection might be messed up.

This is a desktop app, correct?

[Krasnoiark]

Yes, this is a Desktop project and the project is a QTWidget project insite 2 other QT Sub-projects.

[mrjj]

Hmm
It does look fine with the kit.

It must be something with the pro file then

Since the test project worked and I assume you compiled that
exactly like this.

[Krasnoiark]

https://drive.google.com/file/d/0B3foRMnUz_jLM1FPTVZZb1U2LUE/view?usp=sharing

This is my .pro file

[ofmrew]

@mrjj I believe that once in the past you told me to try deleting the build folder. It has solved many of my problems, is it worth a try?

[jsulm]

@Krasnoiark You still add gui twice.
Do you have other Qt installations on your machine?

[mrjj]

@ofmrew
its always worth a try :) Especially when stuff are strange. Good call.

[Krasnoiark]

@ofmrew No I don't. All I have is QT 5.9.2 MinGW and the tools
.

I have tryed recompiling from scratch, it did not work.

[mrjj]

It seems not to be the pro file as
it is pretty basic and it could compile my project too.

And QPrinter is included in the installation as a default project works.

My best bet is that the
$$files(.cpp)
$$files(classes/.cpp)
$$files(gui/*.cpp) \

find something we dont expect and include.

[Krasnoiark]

@mrjj I have tryed retyping all the pro file with all the files included but no luck.
Do you think it could be about the multiple projects ? I have my software project inside a sub-project inside an other sub-project. (My team needed multiple projects in order to have the testing project and the software and a 2nd project because our project has multiple softwares ).
In the sub project I only include the projects it gathers. Should I include qprintsupport inside that pro file ?

[mrjj]

If the sub projects also have .pro file
and you get the linker error in them/related to those files
then yes, you need
QT+=printsupport there also to link the module to that set of .o files.