Hi,

regarding to the `why the same source code compiles differently on different system`
I think the main cause is the architectural differences between the systems. Integrating a gnu utility into a new operating system, may be difficult, and sometimes you should limit the utility capabilities in order to integrate into your os....

In the past I also faced your problem, an I also wondered why the basic command syntaxes are so different... My final conclusion is that every OS is a different OS, even that they are kindred... Different OS, different commands...

regards