Bootstrap failure on Linux/x86-64 in Ada

[Paolo Bonzini]

Arnaud Charlet wrote:

>>So you need a -gnat<something> option, or compilation fails?
>>    
>>
>
>You need at the very least -gnatg, although -gnatpg is highly recommended,
>and -gnata is highly desirable for development
>
Ok.  For now I'd stick with the patch I proposed to Andreas, but please 
tell me if these assertions are right or wrong:

-gnatpg is equivalent to -gnatg -gnatp.

-gnatg is necessary for compilation, and it could be moved out of 
ADAFLAGS into the rule.  ADAFLAGS would then mention only -gnatp -gnata.

Paolo