[SOLVED] cannot find -lQtGuid4 -lQtNetworkd4 -lQtCored4

marguinb

This is a weird problem that keeps happening on my system. I have a working Qt project with a working .pro file that is configured for my system. The project worked but I needed to integrate openssl so I recompiled Qt 4.8.6 with openssl support. Here is what I ran in an Administrator CMD shell:

mingw32-make confclean
configure -release -opensource -confirm-license -static -openssl -webkit -qt-style-windows -L C:\deps\openssl-1.0.1h\include
mingw32-make

Everything seems to compile and go smoothly until I try to build. At the very end of the build i get the following errors from QrCreator:

cannot find -lQtGuid4
cannot find -lQtNetworkd4
cannot find -lQtCored4

The 3 libraries are included in the .pro file:

QT += core gui network

So I am really at loss here. Any help is appreciated!

SGaist

Hi and welcome to devnet,

First thing i'd avoid is to use an administrator shell for development, this is a bad idea.

Next, add the -L and -I flags for OpenSSL to configure, otherwise you are likely to not get openssl detected properly.

Did you completely wipe your application build before retrying ?

Also did you check that the Qt libraries were properly built ?

marguinb

yes I have cleaned the project and also deleted the debug folder of the project when rebuilding it.

How would I go about checking if the libraries were successfully built. I can see the appropriate dlls and .a files in Qt/4.8.6/lib

edit: also what is the correct -L and -I path for openssl? Thanks for your support.

SGaist

Ok, it's simpler than that: you have built a release only Qt and trying build a debug version of your application.

marguinb

ohhhh so the problem is because I am specifying the -release flag. If I omit it then what kind of application do I get?

edit: just checked the default is -debug so i will get a debug version. Man going to take a while to recompile Qt on a single core CPU. So glad I am receiving my i7 4790K today in the mail it is about time.

SGaist

Since you are developing/debugging, drop also the static flag, if you really want to go static, do it only for deployment. Also don't forget that static linking may have licensing issues.

marguinb

will do! So now I am trying to compile Qt with the following commands:

mingw32-make confclean
configure -opensource -confirm-license -openssl -webkit -qt-style-windows -L C:\deps\openssl-1.0.1h\apps -I C:\deps\openssl-1.0.1h\include
mingw32-make

SGaist

You don't really need to set the style, it's automagically done for you. The rest is fine.

marguinb

Okay sounds good. Will report once everything is recompiled on whether the application will build.

marguinb

So I ran the compile overnight and it gave me an error with the webkit compilation. I am reconfiguring the build with -shared . can anybody tell me if -static and -webkit do not work together?

I read that you cannot compile webkit with a static build. is that true?

SGaist

I remember that from the Qt 4.7 time, but I don't know if it's still relevant. Unless needed, I don't build this module since it's very time/resource consuming.

marguinb

I need this module because I am using the webkit module in my code. Is there something else I have to configure outside of Qt?

There are installation procedures with perl, python, and ruby for Webkit but I am not sure if I need to configure anything there or if Qt will build everything for you.

SGaist

I don't remember installing anything special for Qt 4 webkit. But it's been a long time.

I can only recommend to try, but yes, do it shared.

marguinb

Okay awesome. I am compiling it as shared now and will report back on how it goes.

In the meantime, just received my i7 4790k. Quite an upgrade from a single core Intel Pentium processor

marguinb

Yes release build was the problem, configuring qt without the -release flag solved the issue.

Thanks SGaist!

SGaist

You're welcome !

Have fun and happy coding :)