If you search for "unistd.h gcc4.7" you'll find plenty of patches of other software which are called "fix for gcc4.7" and add a set of includes and defines which contain unisdt.h.
So your suspection is quite on-the-spot, I think :-)
If you search for "unistd.h gcc4.7" you'll find plenty of patches of other software which are called "fix for gcc4.7" and add a set of includes and defines which contain unisdt.h.
So your suspection is quite on-the-spot, I think :-)