[Ada] Bootstrapping mainline GNAT fails (with workaround and root cause: makefile bug)

[Russ Allbery]

Florian Weimer <fw@deneb.enyo.de> writes:

> Usually, this means that your build directory is located somewhere in
> the source tree.  This setup is not supported by GCC at all, as
> documented.  (This restriction is not specific to the Ada front end.)

I'm not sure if anyone cares, but that's definitely a regression from GCC
2.95.x.  I've been building GCC in a subdirectory of the source directory
for years.

-- 
Russ Allbery (rra@stanford.edu)             <http://www.eyrie.org/~eagle/>