PROCESSOR-SDK-AM62X: When compiling U-Boot, I encountered a build error.

Tool/software:

Hi Ti

I referred to the following website to compile U-Boot.

software-dl.ti.com/.../UG-General-Info.html

when I used the following command:

make ARCH=arm CROSS_COMPILE="$CROSS_COMPILE_32" O=$UBOOT_DIR/out/r5 BINMAN_INDIRS=$TI_LINUX_FW_DIR

I got the error message as bellow

What could be causing this error?