How to include a .lib file dynamically?

I've got a problem with my project. I am developing it on Qt Creator, and I need to add a .lib file to my project. So, I wrote this line in my .pro :

LIBS += "C:\My_Path\My_Project\lib\file.lib"

This is working fine. My only issue is that I need to write the entire path to the .lib file. Since it's a group project, it needs to be compilable on other computers without changing the path to this file every times.

I tried many syntaxes, like :

LIBS += -L"lib/" -l"file.lib"

or

LIBS += "lib\file.lib"

or

LIBS += "file.lib"

(putting the .lib file at the root and adding it to the project in Qt Creator)

None of them works :/

I also tried to add the .lib file in a QResource file but a syntax like this one :

LIBS += ":/lib/f开发者_如何学Goile.lib"

in a .pro file doesn't seem to work...

I am now running out of ideas :(

Help please :)

Did you try

LIBS += -Llib -lfile

or

LIBS += -L./lib -lfile?

Remember if you aren't using the full path, you don't add .lib to the library name and you don't use quotes. If the path has spaces (or you just want to be safe), use $$quote(-L<path name>)

As stated here the Unix style paths work on Windows as well where you normally need to provide the full path. qmake will fill it in for you.

I converted

LIBS += ../../lib/phraseBox.lib

to

LIBS += $$quote(-L../../lib) -lphraseBox

and

LIBS += $$quote(-L../../lib) phraseBox.lib

In one of my project with no problem on Windows. You might want to post your project files somewhere, or post the actual error messages to narrow this down.

Ok, I found the solution :

the lib/ directory has to be placed in the same directory that the Makefile (the real one, not the .pro).
Since I copied the lib/ directory in the build-desktop/ directory, everything is working fine using relative paths :)

From your tries I guess you want to link to the library using relative path which should work just fine by default.

Try this:

LIBS += -L$$relative/directory/path -llibname

If it does not work, then you might want to try setting multiple INCLUDEPATH. :/