What is state of Ada compiler?

[Jerry]

What is the state of the Macports Ada compiler, GNAT? I recall a  
couple years ago there was a bootstrapping problem since the compiler  
is written in Ada. Is it possible to have a 64-bit compiler on OS X  
10.5? 10.6?

The 2010 GPL edition from Adacore fixes the linking problem to BLAS  
and LAPACK, meaning that there is a linker pragma specific to OS X  
that finds those libraries so the user no longer has to do this. Also,  
that edition fixes a problem with the non-blocking Get_Immediate (in  
the past, it was blocking). Does Macports GNAT also fixe these problems?

Also, does Macports include GPS, GNAT Programming Studio, the Ada- 
specific IDE?

Jerry