#define MAJOR_VERSION 4
#define MINOR_VERSION 5
#define PATCH_LEVEL   0
#define MIN_VERSION_base(x,y,z) MAJOR_VERSION > x || MAJOR_VERSION == x && MINOR_VERSION > y || MAJOR_VERSION == x && MINOR_VERSION == y && PATCH_LEVEL >= z

MIN_VERSION_base(4,5,0)
#if MIN_VERSION_base(4,5,0)
this text is only included when expression evaluates to true
#endif
done