Different build time warnings for ticket 3908

[Richi Dubey]

Got it.

>> The "pre-installed gcc" shouldn't come into play here, because you are
>> using an RTEMS cross-compiler, e.g., sparc5-rtems-gcc.

I was unsure of this as recently I had seen a mail in the devel list
saying that someone had an error because of changes in the latest
gcc/clang version. I cannot find that mail again.

Thanks for the reply.