ARM crosscompiling?

[Krassimir Slavchev]

cd /usr/src
make TARGET=arm TARGET_ARCH=arm buildenv
cd /usr/src/sys/boot/arm/at91/libat91
make
cc -Os -mcpu=arm9 -ffreestanding  
-I/usr/src/sys/boot/arm/at91/libat91/../libat91  
-I/usr/src/sys/boot/arm/at91/libat91/../../../..  
-I/usr/src/sys/boot/arm/at91/libat91/../../../../arm  -D_KERNEL  -Wall 
-Waggregate-return   -Wnested-externs  -Wpointer-arith -Wshadow 
-Wwrite-strings  -Werror  -Wmissing-prototypes  -Wmissing-declarations 
-DBOOT_KB920X  -c printf.c
printf.c:20:20: stdarg.h: No such file or directory
....

I have tried this on 2 different machines but it is the same.