build problems with fresh cvsup (5.2)

[Goodleaf, John M]

I started with a blank src dir and cvsup'd the whole 5.2 tree. A buildworld
yields this:


/usr/src/contrib/libstdc++/libsupc++/eh_personality.cc:38:23: unwind-pe.h:
No such file or directory
In file included from
/usr/src/contrib/libstdc++/libsupc++/eh_terminate.cc:34:
/usr/src/contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such
file or directory
In file included from /usr/src/contrib/libstdc++/libsupc++/eh_throw.cc:32:
/usr/src/contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such
file or directory
In file included from /usr/src/contrib/libstdc++/libsupc++/eh_type.cc:32:
/usr/src/contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such
file or directory
In file included from /usr/src/contrib/libstdc++/libsupc++/pure.cc:31:
/usr/src/contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such
file or directory
In file included from /usr/src/contrib/libstdc++/libsupc++/vec.cc:37:
/usr/src/contrib/libstdc++/libsupc++/unwind-cxx.h:41:20: unwind.h: No such
file or directory
mkdep: compile failed
*** Error code 1
 
Stop in /usr/src/gnu/lib/libstdc++.


----------------------------------------
I can build if I turn off CXX in /etc/make.conf. This is on a working
machine already running 5.2-RELEASE.

What gives?

-John