i had pkg installed earlier as i did it with gpuminer. (copy paste bin/share folders)
now installed pkg again as you told above and now there is one error line less..
 but still this:

./configure: line 21247: syntax error near unexpected token `QTPLATFORM,'
./configure: line 21247: `        PKG_CHECK_MODULES(QTPLATFORM, Qt5PlatformSuppo
rt, QT_LIBS="$QTPLATFORM_LIBS $QT_LIBS")'

edit, solved
to mingw32 folder:
************************
** Install pkg-config **
************************
1. Visit http://www.gtk.org/download/win32.php
2. Search for a version of pkg-config that includes both the Tool and Dev downloads
3. Click and download both the Tool link and the Dev link
4. Open the pkg-config zip file and extract the bin folder to C:\mingw32
5. Open the pkg-config-dev zip file and extract the share folder to C:\mingw32