On Tue, 15 Nov 2005, Robert Millan wrote: > ITYM: > > #include <features.h> > #ifdef __GLIBC__ > > The problem with this is, that you have no garantee <features.h> exists untill > you have identified the C library implementation somehow, so you can't include > it yet (chicken and egg). Then use <stdlib.h> -- it'd better exist everywhere. Maciej