[U-Boot] compiled failed when turned off gcc optimazition

[TigerLiu at viatech.com.cn]

Hi, experts:
I tried to turn off gcc optimazition by changing config.mk file:
OPTFLAGS= -O0 #-fomit-frame-pointer

But failed to compile u-boot, it tipped:
......
/home/lion/Origen0921/arm-2010.09/bin/arm-none-eabi-ld:
arch/arm/cpu/armv7/libarmv7.o: relocation R_ARM_MOVW_ABS_NC against `a
local symbol' can not be used when making a shared object; recompile
with -fPIC
arch/arm/cpu/armv7/libarmv7.o: could not read symbols: Bad value
make[1]: *** [u-boot] Error 1
make[1]: Leaving directory `/home/lion/DebugLinux/uboot-0627/u-boot'
make: *** [smdkc100] Error 2


Best wishes,