cygnus: remove support for Cygnus-style trees

Support for "Cygnus-style" tree as enabled by the 'cygnus' option
has been deprecated in the documentation and with runtime warning
since Automake 1.12.1.  It's now time to remove it.

Closes automake bug#11034.

* lib/Automake/Options.pm (_process_option_list): Issue a proper
error when the 'cygnus' option is seen.
* automake.in: Don't handle the 'cygnus' option anymore.
* docs/automake.texi: Remove references to cygnus option and
Cygnus-style trees.
* lib/am/dejagnu.am, lib/am/texinfos.am: Drop special setups for
cygnus mode.
* NEWS: Update.
* t/cygnus-no-more.sh: New test.
* t/flavor.sh: Adjust.
* t/cygnus-deprecation.sh: Remove.
* t/cygnus-check-without-all.sh: Likewise.
* t/cygnus-requires-maintainer-mode.sh: Likewise.
* t/cygnus-dependency-tracking.sh: Likewise.
* t/cygnus-imply-foreign.sh: Likewise.
* t/cygnus-no-installinfo.sh: Likewise.
* t/cygnus-no-dist.sh: Likewise.
* t/clean2.sh: Likewise.
* t/txinfo5.sh: Likewise.
* t/txinfo5b.sh: Likewise.
* t/list-of-tests.mk: Update.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/t/flavor.sh b/t/flavor.sh
index 6a1fddb3b..8b999cc35 100755
--- a/t/flavor.sh
+++ b/t/flavor.sh
@@ -57,21 +57,4 @@ for flavor in --gnits --gnu --foreign --ignore-deps; do
 
 done
 
-# Cygnus mode is deprecated now, and must be handled separately.
-$AUTOMAKE --cygnus -Wno-obsolete
-./configure --enable-maintainer-mode
-grep " --cygnus" Makefile
-$MAKE
-# Two code paths in configure.am:
-# - either a file in $(am__configure_deps) has been updated ...
-$sleep
-touch aclocal.m4
-$MAKE
-grep " --cygnus" Makefile
-# - ... or not; i.e., Makefile.am or an included file has.
-$sleep
-touch Makefile.am
-$MAKE
-grep " --cygnus" Makefile
-
 :