Newlib reentrancy structure overhead

[David Brown <david@xxxxxxxxxxxxxxx>]

Hi,

Does anyone know if there is a way to get access to the newlib c library 
functions without the overhead of the re-entrancy support?  When working 
on a small system, it can be very significant - any standard library 
function that uses "errno" gets a 1024 byte impure_data structure, and 
all access to c library global data pass through an extra layer of 
indirection (reading or setting errno requires a function call).

mvh.,

David