Platform i386

Compiling a recently sup'd tree produces:

   all ===> bin/rcp
   cc  -static -o rcp -nostdlib -L/usr/src/newhouse-out/usr/lib 
        -Wl,-rpath-link,/usr/src/newhouse-out/usr/lib /usr/src/newhouse-out/usr/lib/crt0.o  
        rcp.o util.o krcmd.o kcmd.o -lkrb -ldes -lgcc -lc -lgcc
   pcbc_enc.o: Undefined symbol `_des_encrypt' referenced from text segment
   pcbc_enc.o: Undefined symbol `_des_encrypt' referenced from text segment
   collect2: ld returned 1 exit status
   *** Error code 1 (continuing)

It's the only compile error in the tree.  There are other des_encrypt references but, 
this is the one (two?) that fails ... I don't get it.  Can anybody point me at a clue?

TIA,
Paul