[Bug bootstrap/51201] [4.7 regression] build error without Ada compiler installed

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51201

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-30 10:52:29 UTC ---
Created attachment 25950
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25950
gcc47-pr51201.patch

Completely untested.  Perhaps at the expense of calling gnatls 4 times instead
of just once for make gnattools (and 6 times for cross-gnattools) we could
avoid this by making the var deferred.