[ada, build] host/target configuration

[Thomas Schwinge]

Hi!

On Sun, 16 Mar 2014 12:09:59 +0100, Andreas Schwab <schwab@linux-m68k.org> wrote:
> Thomas Schwinge <thomas@codesourcery.com> writes:
> > On Sun, 16 Mar 2014 11:30:06 +0100, Andreas Schwab <schwab@linux-m68k.org> wrote:
> >> Thomas Schwinge <thomas@codesourcery.com> writes:
> >> 
> >> > It is not obvious to me (and neither was to Olivier as well as the patch
> >> > reviewers, as it seems) where the gcc/ada/gcc-interface/ code is using
> >> > this variable.  Is there a way for this to be made more explicit, so in
> >> > the future it won't get removed as unused, again?
> >> 
> >> git grep?
> >
> >     $ git grep target_cpu_default -- gcc/ada/gcc-interface/
> >     gcc/ada/gcc-interface/Makefile.in:target_cpu_default = @target_cpu_default@
> 
> Did I say anything about ignoring everything but Ada????

No, you did not, but I had said: »not obvious [...] where the
gcc/ada/gcc-interface/ code is using [target_cpu_default]«.

So, it seems the issue here is that all variables that may used by
$(tmake_file)/$(xmake_file) files (which are "include"d from
gcc/ada/gcc-interface/Makefile.in; tmake_file/xmake_file set in
gcc/config.gcc) must be available -- which is not ovious, and thus
fragile.


Grüße,
 Thomas
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