so with help of someone from BugReport portal, the solution was extremly simple...
as you can see form the log:
C and C++ compler is pucked up from PERL, not form MinGW,
so I have onlymoved MinGW environment variables PATH above the PERL and then all worked fine...
they also suggested to try specify:-DCMAKE_CXX_COMPILER=C:/path/to/mingw/compiler/g++.exe -DCMAKE_C_COMPILER=C:/path/to/mingw/compiler/gcc.exe
but im not sure where to put this realy.
other option (im only thinking, was not suggested) is to use MingwDir parameter in configurebut not sure if the Qt is this smart enough to use this parameter as a compiler path for C and C++, this has to be tested realy