problem with your change in configure/configure.in with Ada

[Arnaud Charlet]

I can no longer configure/build GCC with Ada enabled after your change:

r115145 | bonzini | 2006-07-03 09:58:08 +0200 (Mon, 03 Jul 2006) | 24 lines

2006-07-03  Paolo Bonzini  <bonzini@gnu.org>

        PR other/27063
        * configure.in: Test subdir_requires and give an appropriate
        error message.
        * configure: Regenerate

gcc:
2006-07-03  Paolo Bonzini  <bonzini@gnu.org>

        PR other/27063
        * configure.ac (for lang...): Simplify nesting of conditionals.
        Test subdir_requires for non-enabled languages.  Move processing
        of lang_opt_files and lang_tree_fiels below that test.
        * configure: Regenerate.
        * doc/sourcebuild.texi (Front End Config): Document subdir_requires.

gcc/objcp:
2006-07-03  Paolo Bonzini  <bonzini@gnu.org>

        PR other/27063
        * config-lang.in: Add subdir_requires.

(and subsequent 115146).

configure ends up with:

+ test -f /cardhu.b/charlet/fsf/trunk/gcc/./config-lang.in
+ echo 'configure: error: The gcc/. directory contains parts of ada but is missing'
configure: error: The gcc/. directory contains parts of ada but is missing
+ exit 1

This is with configure --enable-languages=c,ada

Could you please have a look ? TIA.