Logstream kludge not working in Mingw/Msys2 Build

[xaedes]

I get following compilation error while compiling under Mingw/Msys2:

[ 97%] Linking CXX executable PRSolve.exe
../../../libgpstk.a(CommandLine.cpp.obj):CommandLine.cpp:(.data+0x0): multiple definition of `Log<ConfigureLOGstm>::reportingLevel'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.data+0x0): first defined here
../../../libgpstk.a(CommandLine.cpp.obj):CommandLine.cpp:(.bss+0x0): multiple definition of `Log<ConfigureLOGstr>::dumpTimeTags'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.bss+0x0): first defined here
../../../libgpstk.a(CommandLine.cpp.obj):CommandLine.cpp:(.bss+0x1): multiple definition of `Log<ConfigureLOGstr>::dumpLevels'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.bss+0x1): first defined here
../../../libgpstk.a(PRSolution.cpp.obj):PRSolution.cpp:(.data+0x0): multiple definition of `Log<ConfigureLOGstre::reportingLevel'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.data+0x0): first defined here
../../../libgpstk.a(PRSolution.cpp.obj):PRSolution.cpp:(.bss+0x0): multiple definition of `Log<ConfigureLOGstrea:dumpTimeTags'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.bss+0x0): first defined here
../../../libgpstk.a(PRSolution.cpp.obj):PRSolution.cpp:(.bss+0x1): multiple definition of `Log<ConfigureLOGstrea:dumpLevels'
CMakeFiles/PRSolve.dir/objects.a(PRSolve.cpp.obj):PRSolve.cpp:(.bss+0x1): first defined here
collect2.exe: error: ld returned 1 exit status

The logstream.hpp kludge is applied because I compile in windows. But under Mingw this is not necessary and actually causes above compilation error.