[U-Boot] compile uboot1.3.4 problem

hi all,   I got a problem that I cannot fix,when I am trying to compile uboot1.3.4 for my processer s3c2440. =============================================================== root@john-desktop:/home/john/u-boot-1.3.4 #  /usr/local/arm/3.3.2/bin/arm-linux- ar: libyt2440.a File format not recognized   -bash:/usr/local/arm/3.3.2/bin/arm-linux-ar:: No such file or directory    =============================================================== libyt2440.a is a file under my board directory, I found nothing in it when I opened it.   I have no idea about this problem,any idea you guys?   any help is appreciated!   regards   john