build error: "cc1: error: invalid option `b'"

[Dan Kegel]

Robert P. J. Day wrote:
 >+ make ARCH=sh prepare include/linux/version.h
>..
>   CC      scripts/mod/empty.o
> cc1: error: invalid option `b'
> cc1: error: invalid option `3'


Rule #1 when using crosstool: read the comments in the script:

case "$KERNEL_VERSION.$KERNEL_PATCHLEVEL.x" in
2.2.x|2.4.x) make ARCH=$ARCH symlinks    include/linux/version.h
              ;;
2.6.x)       case $ARCH in
              sh*)        # sh does secret stuff in 'make prepare' that can't be triggered separately,
                          # but happily, it doesn't use target gcc, so we can use it.
                          # Update: this fails on 2.6.11, as it installs elfconfig.h, which requires target compiler :-(
                          make ARCH=$ARCH prepare include/linux/version.h

I haven't figured out how to cross-compile 2.6.x for x > 10 for sh,
but then I haven't tried very hard.
- Dan

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