quick guide to get inferno emu on ds. (work in progress)

# Preparation
tar xzvf dslinux-snapshot.tar.gz 
tar xjvf dslinux-toolchain-2007-11-03-i686.tbz -C dslinux/
svn checkout http://inferno-os.googlecode.com/svn/trunk/ inferno-os

cd dslinux
patch --dry-run -p0 < dslinux-configs.patch
DSLINUX=$(pwd)
PATH=$DSLINUX/dslinux-toolchain-2007-11-03-i686/bin/:$PATH

INFERNO=$DSLINUX/inferno-os
PATH=$INFERNO/Linux/386/bin/:$PATH
cd inferno-os
patch --dry-run -p0 < inferno-os-ds.patch

Once the toolchain and sources are set up,
cd $DSLINUX
make menuconfig # don't override configs
make	# compile dslinux with the changes in dslinux-configs.patch

# notes about dslinux-configs.patch
The funcion brk/sbrk is missing as it's not supported in uClinux as there's no MMU. -> Workaround this
Large file support is not included in default dslinux, 
moreover there're some devices needed to interface emu with the stylus, keys and audio: /dev/{event0,mixer}
moreover the default dslinux build is around 30 Mb, with programs as Pixil that can be replaced by emu.

# Compile inferno
INFERNO=/path-to/inferno-os
PATH=$INFERNO/Linux/386/bin:$PATH
cd inferno-os/ # edit mkconfig and set ROOT=$INFERNO and OBJTYPE=arm
cd emu/Linux-fb/; 
remove the duplicated segflush in emu/Linux-fb/screen.c.
mk CONF'='emu-ds-arm

#refs
- dslinux and toolchain
	http://dslinux.org/cgi-bin/moin.cgi/CompilingDSLinux
- inferno-os with inferno-fb and tsinput*.{c,h} and audio-oss.c
	http://inferno-os.googlecode.com/svn/trunk
	http://archive.netbsd.se/?ml=Inferno-discussion&a=2006-08&m=2264068
	http://inferno-lab.googlecode.com/svn/trunk/67/emu/