build failure on new 5.2 src?

[genew at rogers.com]

On source cvsup'd this morning and a clean /usr/obj I get this error.
sh /usr/src/tools/install.sh -C -o root -g wheel -m 444 
/usr/src/usr.bin/lex/FlexLexer.h 
/usr/obj/usr/src/i386/legacy/usr/include/c++/3.3
install: /usr/obj/usr/src/i386/legacy/usr/include/c++/3.3: No such file or 
directory
Error code 71
1 error
Error code 2
1 error
Error code 2
1 error
Error code 2
1 error
I am assuming that it is trying to use C++ which would have to have been 
built before it but searching /usr/obj shows it does not exist at this point in the 
build.