Bug#365780: gcc-4.1: FTBFS on amd64, sparc with "configure.in:2177: error: possibly undefined macro: AS_FOR_TARGET"

[Matthias Klose <doko@cs.tu-berlin.de>]

ludovic@ludovic-brenta.org writes:
> Package: gcc-4.1
> Version: 4.1.0-2
> Severity: serious
> 
> The patch ada-link-lib.dpatch changes the top-level configure.in, then
> calls autoconf to regenerate configure.  Autoconf then bails out with:
> 
> configure.in:2177: error: possibly undefined macro: AS_FOR_TARGET
>       If this token and others are legitimate, please use m4_pattern_allow.
>       See the Autoconf documentation.
> make: *** [stamps/02-patch-stamp-ada-link-lib] Error 1
> 
> I'm not sure what is happening.  One thing is for sure:
> ada-link-lib.dpatch does not change anything related to AS_FOR_TARGET,
> so the problem may be that we call the wrong version of autoconf.
> (The top-level configure.in requires autoconf2.13 while the ones in
> subdirectories require more recent versions.  Oh, I hate autoconf.).
> 
> In any case, I think that a quick and easy fix would be to revive the
> corresponding patch to configure (in ada-link-lib.dpatch), instead of
> calling autoconf.

either this, or call autoconf2.13.