geom_label and -march=armv4 error

===> geom/geom_label (all)
cc  -O -pipe  -Werror -D_KERNEL -DKLD_MODULE -nostdinc   -DHAVE_KERNEL_OPTION_HE
ADERS -include /usr/home/hiroki/ZRouter/obj/usr/home/hiroki/ZRouter2/zrouter/tmp
/arm.arm/usr/home/hiroki/data/git/freebsd/sys/Planex_MZK-W04G/opt_global.h -I. -
I/usr/home/hiroki/data/git/freebsd/sys -fno-common  -funwind-tables -I/usr/home/
hiroki/ZRouter/obj/usr/home/hiroki/ZRouter2/zrouter/tmp/arm.arm/usr/home/hiroki/
data/git/freebsd/sys/Planex_MZK-W04G -march=armv4 -MD  -MF.depend.g_label.o -MTg
_label.o -ffreestanding -fwrapv -Wall -Wredundant-decls -Wnested-externs -Wstric
t-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
 -Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs -fdiagnostics-sho
w-option  -Wno-unknown-pragmas  -Wno-uninitialized  -finline-limit=8000 -fms-ext
ensions --param inline-unit-growth=100 --param large-function-growth=1000  -std=
iso9899:1999 -c /usr/home/hiroki/data/git/freebsd/sys/modules/geom/geom_label/..
/../../geom/label/g_label.c -o g_label.o
cc1: warnings being treated as errors
/usr/home/hiroki/data/git/freebsd/sys/modules/geom/geom_label/../../../geom/labe
l/g_label.c:1: warning: target CPU does not support interworking
*** Error code 1

Stop.
bmake[3]: stopped in /usr/home/hiroki/data/git/freebsd/sys/modules/geom/geom_lab
el
*** Error code 1

Stop.
bmake[2]: stopped in /usr/home/hiroki/data/git/freebsd/sys/modules
*** Error code 1

Stop.
bmake[1]: stopped in /usr/home/hiroki/ZRouter/obj/usr/home/hiroki/ZRouter2/zrout
er/tmp/arm.arm/usr/home/hiroki/data/git/freebsd/sys/Planex_MZK-W04G
*** Error code 1

Stop.
bmake: stopped in /usr/home/hiroki/data/git/freebsd
*** [buildkernel] Error code 1

Stop in /usr/home/hiroki/data/git/freebsd.
*** [kernel-build] Error code 1

Stop in /usr/home/hiroki/ZRouter2/zrouter.
microserver %