current on amd64 fails

[John Klos <john%ziaspace.com@localhost>]

#   compile  cpio/cpio.o
/usr/src/../tools/bin/x86_64--netbsd-gcc -O2 -fstack-protector 
-Wstack-protector   --param ssp-buffer-size=1  -std=gnu99  -Wall 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare 
-Wno-traditional  -Wa,--fatal-warnings -Wreturn-type -Wswitch -Wshadow 
-Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter 
-Wno-sign-compare -Wsign-compare -Wformat=2  -Werror 
--sysroot=/usr/src/../dest-amd64 
-I/usr/src/external/bsd/libarchive/include 
-DPLATFORM_CONFIG_H=\"config_netbsd.h\" 
-I/usr/src/external/bsd/libarchive/dist/libarchive_fe  -D_FORTIFY_SOURCE=2 
-c -Wnoformat-nonliteral 
/usr/src/external/bsd/libarchive/dist/cpio/cpio.c
cc1: error: unrecognized command line option "-Wnoformat-nonliteral"
*** [cpio.o] Error code 1