How to include id3lib library in Qt (Windows)

[Divad]

Hello,

I want to use id3libs library, but I can't include it. How come ?

- I have downloaded libraries here (.h, .dll, .lib, .exp and .a).

- I put all these files in one folder, so I've got this :

-> audioProject/

- a.mp3

- audioProject.pro

- audioProject.pro.user

- audioProject.cpp

- audioProject.h

- id3.h

- main.cpp

-> id3/

- field.h

- globals.h

- id3lib.dll

- id3lib.lib

- ...

- I have added bellow lines in my .pro file :

INCLUDEPATH += $$PWD/id3/
LIBS += -L$$PWD/id3/ -lid3lib
HEADERS  += audioProject.h   # I did not included id3lib headers

INCLUDEPATH += $$PWD/id3/
LIBS += -L$$PWD/id3/ -lid3lib
HEADERS  += audioProject.h   # I did not included id3lib headers

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- I wrote these lines in my audioProject.cpp file :

#include <id3/tag.h>

#include <id3/tag.h>

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- But when I try an example, I've got errors :

ID3_Tag tag("a.mp3");

ID3_Tag tag("a.mp3");

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Here are compilation errors :

undefined reference to ID3_Tag::ID3_Tag(char const*)
undefined reference to ID3_Tag::~ID3_Tag()

undefined reference to ID3_Tag::ID3_Tag(char const*)
undefined reference to ID3_Tag::~ID3_Tag()

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"undefined reference" is because of bad libraries inclusion. But in my case, I am confused.
How can I fix it ? (I am using Qt 5.1.1, Qt Creator 4.8.2 on Windows 7 64 bits).

Thank you