Failing `make buildworld` with today's source

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I recently integrated today's (ok, sunday's) source code into my  
branch in perforce, and I'm getting these build errors:

Anybody seen anything similar?

./gengenrtl > genrtl.c
./gengenrtl -h > genrtl.h
cc -O2 -fno-strict-aliasing -pipe -I. -DIN_GCC -DHAVE_CONFIG_H - 
DPREFIX=\"/usr\" -DCROSS_COMPILE -I/usr/home/tyler/builds/obj/iguana/ 
usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/cc_tools/../ 
cc_tools -I/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../cc_tools -I/usr/home/tyler/perforce/projects/l4bsd/src/ 
gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc -I/usr/home/tyler/ 
perforce/projects/l4bsd/src/gnu/usr.bin/cc/cc_tools/../../../../ 
contrib/gcc/config -DGENERATOR_FILE  -I/home/tyler/builds/obj/iguana/ 
usr/home/tyler/perforce/projects/l4bsd/src/tmp/legacy/usr/include -c / 
usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/genattr.c
In file included from /usr/home/tyler/perforce/projects/l4bsd/src/gnu/ 
usr.bin/cc/cc_tools/../../../../contrib/gcc/genattr.c:27:
./tm.h:4:15: /.h: No such file or directory
./tm.h:10:22: /freebsd.h: No such file or directory
In file included from /usr/home/tyler/perforce/projects/l4bsd/src/gnu/ 
usr.bin/cc/cc_tools/../../../../contrib/gcc/genattr.c:28:
/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/rtl.h:2189: warning: parameter has  
incomplete type
/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/rtl.h:2189: warning: parameter has  
incomplete type
/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/rtl.h:2190: warning: parameter has  
incomplete type
/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/rtl.h:2190: warning: parameter has  
incomplete type
/usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools/../../../../contrib/gcc/rtl.h:2209: warning: parameter has  
incomplete type
*** Error code 1

Stop in /usr/home/tyler/perforce/projects/l4bsd/src/gnu/usr.bin/cc/ 
cc_tools.
*** Error code 1
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