[U-Boot-Users] re: error: invalid option `cpu=4kc

Philippe De Swert philippedeswert at scarlet.be
Mon Dec 13 10:45:24 CET 2004

Hi Jattin,

>I have following installed on my machine and want to develop a BPS for mips
>based board.
> - eldk 3.1 mips-linux-x86
> - U-Boot 1.1.1
> I have setup the path to the installed eldk bins and setup the export
> I wanted to ensure that everything is setup correctly, so tried building the
>mips based
>boards such as purple and tb0229. In each case I get the following compile
> mips_4KC-gcc -g  -Os   -D__KERNEL__ -DTEXT_BASE=0xB0000000
>-I/home/jdudakia/u-boot-1.1.1/include -fno-builtin -ffreestanding -nostdinc
>/opt/eldk3.1/usr/bin/../lib/gcc-lib/mips-linux/3.3.3/include -pipe 
>-mcpu=4kc -EB -mabicalls -Wall -Wstrict-prototypes -c -o stubs.o stubs.c
> cc1: error: invalid option `cpu=4kc"
> make[1]: *** [stubs.o] Error 1
> make[1]: Leaving directory `/home/jdudakia/u-boot-1.1.1/examples"
> make: *** [examples] Error 2

Your setup is ok. In newer toolchains (I believe it is actually in binutils,
but I don't know which version causes this) the mcpu=4kc option does not exist
anymore. You have to use -march=...  --mtune=...

See this for more info:

The relevant file you have to edit is cpu/mips/config.mk.

Hope this helps.

| Philippe De Swert -GNU/linux - uClinux freak-      
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