Linker problems during Qt installation (5.2 rc1)

The linker was not finding some Qt libraries during Qt installation via source file in a Debian GNU/Linux.

Here are the steps I've done to fix this problem:

/MYDIR is the /home/dir/where/qt/tarball/was/downloaded

/MYDIR-QT is the dir /MYDIR/qt-everywhere-opensource-src-5.2.0-rc1

1. Download the latest GNU Bison and Flex and install them into /opt/gnu
2. $ cd /MYDIR ; tar xzvf qt-everywhere-opensource-src-5.2.0-rc1.tar.gz ; cd qt-everywhere-opensource-src-5.2.0-rc1
3. Edit
   qtdeclarative/src/qmltest/qmltest.pro
   qtdeclarative/tools/qmltestrunner/qmltestrunner.pro
   qtdeclarative/examples/qmltest/qmltest/qmltest.pro
   Add line
   LIBS += -L/MYDIR-QT/qtdeclarative/lib -lQt5Quick
4. Edit
   qtdeclarative/tools/qmltestrunner/qmltestrunner.pro
   qtdeclarative/examples/qmltest/qmltest/qmltest.pro
   Add line
   LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Test
5. Edit
   qtmultimedia/examples/multimediawidgets/camera/camera.pro
   qtmultimedia/examples/multimediawidgets/videographicsitem/videographicsitem.pro
   qtmultimedia/examples/multimediawidgets/videowidget/videowidget.pro
   qtmultimedia/examples/multimediawidgets/player/player.pro
   qtmultimedia/examples/multimediawidgets/customvideosurface/customvideowidget/customvideowidget.pro
   Add line
   LIBS += -L/MYDIR-QT/qtbase/lib -lQt5OpenGL
6. Edit
   qtwebkit/Source/WebKit2/Target.pri
   Add lines
   LIBS += -L/MYDIR-QT/qtdeclarative/lib -lQt5Quick -lQt5Qml
   LIBS += -L/MYDIR-QT/qtlocation/lib -lQt5Positioning
   LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Sql
   LIBS += -L/MYDIR-QT/qtsensors/lib -lQt5Sensors
   LIBS += -L/MYDIR-QT/qtwebkit/lib -lQt5WebKit
7. Edit
   qtwebkit/Source/WebKit2/DerivedSources.pri
   qtwebkit/Source/WebKit2/PluginProcess.pro
   qtwebkit/Source/WebKit2/SandboxProcess.pro
   qtwebkit/Source/WebKit2/WebKit2.pro
   qtwebkit/Source/WebKit2/WebProcess.pro
   Add lines
   LIBS += -L/MYDIR-QT/qtdeclarative/lib -lQt5Quick -lQt5Qml
   LIBS += -L/MYDIR-QT/qtlocation/lib -lQt5Positioning
   LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Sql
   LIBS += -L/MYDIR-QT/qtsensors/lib -lQt5Sensors
8. Edit
   qttools/src/assistant/assistant/assistant.pro
   Add line
   LIBS += -L/MYDIR-QT/qttools/lib -lQt5CLucene
9. Edit
   qttools/src/assistant/qhelpgenerator/qhelpgenerator.pro
   qttools/src/assistant/qcollectiongenerator/qcollectiongenerator.pro
   Add lines
   LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Sql
   LIBS += -L/MYDIR-QT/qttools/lib -lQt5CLucene
10. Edit
    qttools/src/assistant/qhelpconverter/qhelpconverter.pro
    qttools/examples/help/contextsensitivehelp/contextsensitivehelp.pro
    Add lines
    LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Sql
    LIBS += -L/MYDIR-QT/qttools/lib -lQt5CLucene
    LIBS += -L/MYDIR-QT/qtbase/lib -lQt5Network
11. $ PATH=/opt/gnu/bin:$PATH
    $ QT5DIR=/opt/qt-5.2.0rc1
    $ ./configure -prefix $QT5DIR -opensource -release -shared -fully-process -qt-sql-psql -plugin-sql-psql -system-sqlite -qt-xkbcommon -qpa xcb -opengl es2 -qtnamespace Qt5 -dbus-linked -openssl-linked -optimized-qmake -no-nis
12. $ make
13. $ make install

That's all.