re PR other/27063 (Fail to build gcc-core-4.2 snapshots)

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.

From-SVN: r115145