Failure adding C++ libraries - c++

Question

I prepare TagLib for use in my TagLib project as follows:
Windows 10
Build the Makefiles:
Open CMake GUI.
Set Paths.
"Where is the source code" and "Where to build the binaries"
Example, Both would be: C:\GitRoot\taglib
Tick: Advanced
Select: Configure
Select: Generator
Tick: Use default native compilers
Select: Finish
Wait until done.
If using ZLib, Scroll down.
(to the bottom of the list of options ... should go over them all)
Edit: ZLIB_INCLUDE_DIR
Edit: ZLIB_LIBRARY
Select: Generate
Build the project:
MinGW:
C:\GitRoot\taglib> gmake
Install the project:
MinGW:
C:\GitRoot\taglib> gmake install
I copy the above generated files into my Taglib project on Qt, so that now this is my taglibtest project folder structure:
then add the following files to my project:
F:*\taglibtest\taglib\lib\libtag.dll.a**
F:*\taglibtest\taglib\lib\libtag_c.dll.a**
as you can see below in tablibtest.pro
taglibtest.pro
QT += core
QT -= gui
CONFIG += c++11
TARGET = taglibtest
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/taglib/lib/ -llibtag.dll
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/taglib/lib/ -llibtag.dlld
INCLUDEPATH += $$PWD/taglib/include
DEPENDPATH += $$PWD/taglib/include
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/taglib/lib/ -llibtag_c.dll
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/taglib/lib/ -llibtag_c.dlld
INCLUDEPATH += $$PWD/taglib/include
DEPENDPATH += $$PWD/taglib/include
HEADERS += \
taglib/include/taglib/aifffile.h \
taglib/include/taglib/aiffproperties.h \
etc.... \
etc.... \
etc....
In the main:
**main.cpp**
#include <QCoreApplication>
#include <QDebug>
#include <taglib/include/taglib/fileref.h>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
TagLib::FileRef f("E:/Dire Straits - Sultans of Swing.mp3");
return a.exec();
}
I get the following error when I run the project:
:-1: error: cannot find -llibtag.dll
:-1: error: cannot find -llibtag_c.dll
collect2.exe:-1: error: error: ld returned 1 exit status
What am I missing in my project? Which files should I include in my project to use the Taglib Framework
Thank you all in advance.