[patch] Use $target_subdir in a more normal way in gcc

[Alexandre Oliva]

On Jun  6, 2003, Nathanael Nerode <neroden@twcny.rr.com> wrote:

>>> This changes target_subdir in gcc to be compatible with target_subdir as used
>>> at the top level (where it is always present).  No behavior changes.
>> 
>> If target_subdir is always target_alias, why do we need both?

> Because we might want to change it in the future. :-)

We actually have to change it in the future.  Autoconf 2.5x will have
target_alias set to nothing unless --target is explicitly set, unlike
autoconf 2.13, that sets it to the implied value if it's not given in
the command line.  I wish we could avoid introducing new
incompatibilities now that we're looking into moving to autoconf 2.5x.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                 aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer