It is because your** Quote: bool flag; **was NOT initialized and contains garbage that is treated as true just because it is not zero. Try: double a = -60 ; double b = -7500 bool flag = (a < b);

How to solve circular dependency in linker is shown here Library order in static linking - Eli Bendersky's website[^] The trick is to organize the library files as shown and link them twice which is perfectly valid. I assume that is the reason you are trying to avoid including the library file. In vino veritas

:) :)