[U-Boot] [PROBLEM] can't cross compile omap4 configuration

Hello, I have an adequate Linaro cross-compiler "arm-linux-gnueabi" which is already properly installed on my .bashrc but everytime I cross compile U-boot (specifically u-boot-2015.04-rc4 ) it doesn't compile, I do the following commands :

make distclean make omap4_panda_defconfig make

and i get :

make scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config.h GEN include/autoconf.mk cc1: error: bad value (armv5) for -march= switch make[2]: *** [include/autoconf.mk] Error 1 make[1]: *** [silentoldconfig] Error 1 make: *** No rule to make target `include/config/auto.conf', needed by `include/config/uboot.release'. Stop.

what shoud i do ? I am really lost !! Thank you in advance, A.M