Taglib Library
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@lucas_1603 I'm not a Windows expert, but I think you really need .lib file on Windows at build time, not .dll
@jsulm Yes, I'll try to find it out. Anw, thank you so much for your time, you helped me a lot
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Hi,
One other thing that you can try is to link directly to the static .a library. Use the full path to that file using $$PWD.
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Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
@jsulm I would like to describe more details for you to understand my problems clearly
This is exactly what I have tried :
After downloading taglib (version 1.11.1) from taglib.org, I built it with cmake and got a .dll and a .dll.a file. Then I brought taglib folder to where my Qt project folder is in and named it 'myTaglib' as this picture
When I go to 'myTaglib' folder, I'll get these items
Now jumping into .pro file, I tried to link to taglib:QT += quick multimedia core CONFIG += c++11 INCLUDEPATH += $$PWD/myTaglib DEPENDPATH += $$PWD/myTaglib LIBS += -L$$PWD/myTaglib -ltagAnd in header file, I included necessary files and using namespace TagLib like this:
#include <tag.h> #include <fileref.h> #include <mpeg/id3v2/id3v2tag.h> #include <mpeg/mpegfile.h> #include <mpeg/id3v2/id3v2frame.h> #include <mpeg/id3v2/id3v2header.h> #include <mpeg/id3v2/frames/attachedpictureframe.h> using namespace TagLib;After all, I built my project and got some errors:
... undefined reference to `__imp__ZN6TagLib8FileNameC1EPKc' in player.cpp - line 94 undefined reference to `__imp__ZN6TagLib7FileRefC1ENS_8FileNameEbNS_15AudioProperties9ReadStyleE' in player.cpp - line 94 undefined reference to `__imp__ZNK6TagLib7FileRef3tagEv' in player.cpp - line 95 undefined reference to `__imp__ZNK6TagLib6String10toCWStringEv' in player.cpp - line 97 undefined reference to `__imp__ZNK6TagLib6String10toCWStringEv' in player.cpp - line 96 ...Then, I checked these lines but it didn't show something like underlined error or red text or something like that, you can see this picture
@lucas_1603
renametaglib.dll.atotaglib.aAlso read this
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Hi,
One other thing that you can try is to link directly to the static .a library. Use the full path to that file using $$PWD.
@sgaist I tried this:
LIBS += -L$$PWD/myTaglib -llibtag.dll.aBut the linker said "cannot find -llibtag.dll.a"
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As already suggested, try with
LIBS += -l$$PWD/myTagLib/libtag.dll.a -
@lucas_1603
renametaglib.dll.atotaglib.aAlso read this
@raven-worx
After rename, I got these:
And in .pro file, I wrote:
INCLUDEPATH += $$PWD/myTaglib DEPENDPATH += $$PWD/myTaglib LIBS += -L$$PWD/myTaglib -ltagBut I still got some errors:
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@raven-worx
After rename, I got these:
And in .pro file, I wrote:
INCLUDEPATH += $$PWD/myTaglib DEPENDPATH += $$PWD/myTaglib LIBS += -L$$PWD/myTaglib -ltagBut I still got some errors:
@lucas_1603 said in Taglib Library:
But I still got some errors:
your problem is not that it can't find the lib but that it finds it already and says it is incompatible.
So you need to change the compiler in either of your 2 compilations. -
@sgaist
I tried it out but it still didn't work, here is what I got:
I don't know why libtag.dll.a was in the same folder as my project (Drive E) but it said "cannot find..." -
@lucas_1603 said in Taglib Library:
But I still got some errors:
your problem is not that it can't find the lib but that it finds it already and says it is incompatible.
So you need to change the compiler in either of your 2 compilations.@raven-worx
I built taglib with MinGW and I also did that for my project.
I built taglib by this code block (followed by this tutorial):cd $TAGLIB mkdir build cd build cmake -G "MinGW Makefiles" -D CMAKE_CXX_COMPILER=g++.exe -D CMAKE_MAKE_PROGRAM=mingw32-make.exe -DBUILD_SHARED_LIBS=ON -DENABLE_STATIC_RUNTIME=OFF ..And here is the compiler of my project:
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@raven-worx
After rename, I got these:
And in .pro file, I wrote:
INCLUDEPATH += $$PWD/myTaglib DEPENDPATH += $$PWD/myTaglib LIBS += -L$$PWD/myTaglib -ltagBut I still got some errors:
@lucas_1603 Come on, your lib is called libtag.a not libtag.dll.a, so please change it to
LIBS += -l$$PWD/myTagLib/libtag.a -
@lucas_1603 Come on, your lib is called libtag.a not libtag.dll.a, so please change it to
LIBS += -l$$PWD/myTagLib/libtag.a@jsulm
As @raven-worx suggested, I renamedlibtag.dll.atolibtag.aand then I tried withLIBS += -l$$PWD/myTaglib/libtag.aas you said but it still didn't work, here is what I got:
Even though I hadlibtag.ain mymyTaglibfolder but the linker said "cannot find..."
