I just got this error building -current:

depend ===> bin/sh
yacc -d -d -o arith.c /usr/src/bin/sh/arith.y
lex -8 /usr/src/bin/sh/arith_lex.l
mv lex.yy.c arith_lex.c
sh /usr/src/bin/sh/mkbuiltins /usr/src/bin/sh/shell.h /usr/src/bin/sh/builtins.def /usr/src/bin/sh/obj.i386
cc -O   -o mkinit /usr/src/bin/sh/mkinit.c
/usr/lib/crt0.o(.text+0x13): undefined reference to `___start'
collect2: ld returned 1 exit status
*** Error code 1

...I've also gotten a few crt0 related errors building other things.
I notice that crt0 changed (on i386 anyway) a few days ago, around when I
last built.  Have I done something wrong/gotten my build tree out of whack
somehow?

+j
-- 
Jeff Rizzo                                         http://boogers.sf.ca.us/~riz