[sigc] failure building from CVS

I'm getting the following error (see below) when building libsigc++2
from CVS with jhbuild.  I never used to get this error, and I haven't
been able to figure out what it's trying to tell me about
nested-name-specifiers.  I recently upgraded my computer to Ubuntu
Dapper (pre-release) which has g++ version 4.0.3.  Breezy had 4.0.1,
so it's possible that the new compiler is more strict about something,
but I haven't been able to track down how to fix it.  Any ideas?


make  all-recursive
make[1]: Entering directory `/home/jonathon/.cvs/gnome2/libsigc++2'
Making all in sigc++
make[2]: Entering directory `/home/jonathon/.cvs/gnome2/libsigc++2/sigc++'
/bin/sh ../libtool --mode=compile g++ -DHAVE_CONFIG_H -I. -I. -I.. 
-I.. -I..   -g -O2 -c signal.cc
 g++ -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I.. -g -O2
-Wp,-MD,.deps/signal.pp -c signal.cc  -fPIC -DPIC -o .libs/signal.o
/bin/sh ../libtool --mode=compile g++ -DHAVE_CONFIG_H -I. -I. -I.. 
-I.. -I..   -g -O2 -c signal_base.cc
 g++ -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I.. -g -O2
-Wp,-MD,.deps/signal_base.pp -c signal_base.cc  -fPIC -DPIC -o
../sigc++/trackable.h:76: error: typedef name may not be a nested-name-specifier
../sigc++/trackable.h:76: error: expected ';' before '<' token
../sigc++/trackable.h:77: error: 'callback_list' does not name a type
./signal.h:35: error: 'bidirectional_iterator_tag' in namespace 'std'
does not name a type
./signal.h:43: error: 'sigc::internal::signal_impl' has not been declared
./signal.h:43: error: expected nested-name-specifier before 'iterator_type'
./signal.h:43: error: expected ';' before 'iterator_type'
./signal.h:48: error: expected ',' or '...' before '&' token

clipped about 300 lines of cascading errors.

(please cc: me as I'm not subscribed to the list)


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