For some odd reason some files won't compile, yet others do, i can't
explain it. Must be a MingW bug.
Is Dev-C++ using MinGW or the native gcc?
MinGW, it cannot use the native gcc AFAIK.
Also note that the MinGW it uses is self-contained, and is distributed
with the IDE. You can upgrade it using update packages. I'll email you
a copy of Dev-C++ if you wish to use it..