Does anyone else get this error building libc?

cc -O -DNLS -DYP -DLIBC_SCCS -DSYSLIBC_SCCS -I/usr/src/lib/libc/include -D__DBINTERFACE_PRIVATE -DPOSIX_MISTAKE -DFLOATING_POINT -Werror  -c -fpic -DPIC /usr/src/lib/libc/gmon/mcount.c -o mcount.so
/var/tmp/cc000699.s: Assembler messages:
/var/tmp/cc000699.s:145: Error: Can't reduce difference of external symbols in PIC code
/var/tmp/cc000699.s:145: Fatal error:1 error, 0 warnings, no object file generated.

*** Error code 1

Stop.

I have rebuilt gcc, gas, and ld just today.

Thanks.

-Andrew