How to apply poppler to qt4???

[Hwanwoo]

HI!!
I'm a beginner qt engineer in korea.
Please help me.
I tried to use poppler by referring to the following site.

https://doc.qt.io/archives/qq/qq27-poppler.html
https://forum.qt.io/topic/27172/solved-integrating-poppler-in-qt4/8
https://github.com/shanalily/DeepReader/wiki/Developer-Documentation

I used poppler-0.24.5. and

sudo apt-get install libfontconfig1-dev
sudo apt-get install libpoppler-dev
sudo apt-get install libpoppler-qt4-dev
cd poppler-0.24.5
./configure
make
sudo make install

I entered the command.
And I entered the following code in project.pro.

INCLUDEPATH += /usr/include/poppler/qt4
LIBS += -L/usr/lib -lpoppler-qt4

Then the following error occurred.

/opt/arm-qte-4.8.5_package/4.5.1/bin/../lib/gcc/arm-none-linux-gnueabi/4.5.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lpoppler-qt4

The path of my poppler library is "/usr/local/lib", so I changed the path to "/usr/local/lib", but it has no effect.
I don't know what to check anymore.
Please help me
Please tell me if you have any additional needs
I'm sorry that the sentence was awkward with a translator.

[jsulm]

@Hwanwoo said in How to apply poppler to qt4???:

The path of my poppler library

What is the name of the poppler library?
Is it really libpoppler-qt4.so?
You use Qt5 not Qt4, right?

Also, you installed poppler using apt, then why do compile poppler by yourself?

[Hwanwoo]

I use Qt4!!
sudo apt-get install libpoppler-qt5-dev ->sudo apt-get install libpoppler-qt4-dev
Sorry....
Several attempts were made.
At first, I tried to configure only, but it didn't work. I used apt and configure together in another example.
This site

https://github.com/shanalily/DeepReader/wiki/Developer-Documentation

I've been trying all the ways on the internet for a few days.

[jsulm]

@Hwanwoo Why do you try to compile poppler if you installed it already using apt?

[Hwanwoo]

@jsulm
I just tried to use it because there is a way to write both in the example.
If you can see only pdf in qt using poppler, it doesn't matter whether you use apt or compile.
I kept trying to compile, but it wasn't, so I just tried apt.

[JonB]

@Hwanwoo
If I were you I would see if I could still find an existing downloadable sudo apt-get install libpoppler-qt4-dev somewhere on the web which can be installed on your distro. Unless you know that is not available.

[Hwanwoo]

@JonB
I'm sorry, but I didn't understand what you meant.

sudo apt-get install libpoppler-qt4-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libpoppler-qt4-dev is already the newest version.
The following package was automatically installed and is no longer required:
  thunderbird-globalmenu
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 444 not upgraded.

When I apt-get, I get a message like this.
I don't know what to do anymore.

[jsulm]

@Hwanwoo I already asked this question before, but you did not answer it: "Is it really libpoppler-qt4.so?"
So, again: what is the exact name of poppler-qt4 lib?

Also, I see that you are building for ARM. Are you, by any chance, doing cross-compilation?

[JonB]

@Hwanwoo
For my part, from reading what you had written I was not clear that you had succeeded in getting libpoppler-qt4-dev. It is not available for my distro. However, now I see that you have done so. In which case, like @jsulm I don't understand why you are not trying to get that working for you instead of deciding you need to build it.

In any case, please answer @jsulm's questions.

[Hwanwoo]

@jsulm

I'm sorry .
Previously, I didn't understand the question properly.
libpoppler-qt4.so is correct.
Is poppler-0.41.0.tar.xz correct for the poppler library name?
I found that I can only output PDF using configure on the desktop.
As you said, I had to do cross-compile for arm.
I should have looked up a lot and asked questions.
I'm sorry

[jsulm]

@Hwanwoo said in How to apply poppler to qt4???:

Is poppler-0.41.0.tar.xz correct for the poppler library name?

This is not the name of Poppler library file but of the Poppler archive...

[Hwanwoo]

@jsulm
Is this a file?

./configure
make

This is the file created using the command above.
I can use pdf in qt in ubuntu environment, but not in target board.
So I am looking for arm cross compile.

[jsulm]

@Hwanwoo said in How to apply poppler to qt4???:

So I am looking for arm cross compile

Thzen you need to cross-compile that lib for your device.

[Hwanwoo]

@jsulm
Thank you for your help.
I looked up a lot and asked questions but thought my knowledge was lacking.
I want to browse more, try more and post the question again.
Thank you.