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

[Andreas Jaeger]

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

> Andreas Jaeger <aj@suse.de> writes:
>
>>> 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.
>>
>> AFAIK A (new, empty) subdirectory of the source dir should work - what
>> is not supported is building directly in the source dir.  If this is
>> broken, it should get fixed,
>
> install.texi reads:
>
> | First, we @strong{highly} recommend that GCC be built into a
> | separate directory than the sources which does @strong{not} reside
> | within the source tree.  This is how we generally build GCC; building
> | where @var{srcdir} == @var{objdir} should still work, but doesn't
> | get extensive testing; building where @var{objdir} is a subdirectory
> | of @var{srcdir} is unsupported.
>
> That's why I didn't care about the breakage in the Ada run-time
> library when OBJDIR is a subdirectory of SRCDIR.

I really thought it was the other way round - but anyway always used a
separate build dir ;-).

Thanks for the clarification,
Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj