Howto compile uClinux tool chain under Cygwin (latest tool chain version of 20060615)
Harro Haan
it should also work for the ARM platform!
make sure the following tools are installed in Cygwin:
gcc-core, gcc-g++, binutils, cpio, make, patch, tar, vim, gettext, libintl
open the Cygwin Bash Shell
mkdir /uClinux
cd /uClinux
download the sources from:
http://www.uclinux.org/pub/uClinux/dist/uClinux-dist-20060803.tar.gz and
save it to the uClinux directory
tar xvzf uClinux-dist-20060803.tar.gz
remove /uClinux/uClinux-dist/linux-2.6.x/scripts/basic/docproc
remove /uClinux/uClinux-dist/linux-2.6.x/scripts/basic/fixdep
remove /uClinux/uClinux-dist/linux-2.6.x/scripts/basic/split-include
remove /uClinux/uClinux-dist/linux-2.6.x/scripts/kconfig/conf
download the following M68K/ColdFire/ARM tool chain sources from:
http://www.uclinux.org/pub/uClinux/m68k-elf-tools/tools-20060615/ and save
it to the uClinux directory:
build-uclinux-tools.sh
binutils-2.16.tar.gz
elf2flt-20060608.tar.gz
gcc-4.1.1.tar.bz2
genromfs-0.5.1.tar.gz
save
http://www.uclinux.org/pub/uClinux/uclinux-elf-tools/tools-20030314/genromfs-0.5.1-cygwin-020605.patch
to
/uClinux/
vim build-uclinux-tools.sh
change line 57 and 58 when ARM platform
make comments of line 66-67
#LINUXVERS="2.6.16"
#UCLIBCVERS="20060608"
change line 72 into
ROOTDIR="${BASEDIR}/uClinux-dist"
change line 86-87 into
KERNEL="${BASEDIR}/uClinux-dist/linux-2.6.x"
UCLIBC="${BASEDIR}/uClinux-dist/uClibc"
make comments of line 171-172
#rm -rf ${KERNEL}
#rm -rf ${UCLIBC}
make comments of line 275-276
#extract linux-${LINUXVERS}.tar*
#extract uClibc-${UCLIBCVERS}.tar*
change line 877 into
UCLIBC_CONFIG="${BASEDIR}/uClinux-dist/uClibc-${_CPU}.config"
A small patch needs to be applied to the linux kernel, so the following
error doesn't occur:
HOSTLD scripts/kconfig/conf
scripts/kconfig/conf.o:conf.c:(.text+0x91): undefined reference to
`_libintl_gettext'
Get this patch from
http://sources.redhat.com/ml/crossgcc/2006-05/msg00093.html
Save the patch to
/uClinux/uClinux-dist/linux-2.6.x/support_cygwin_cross.patch
cd /uClinux/uClinux-dist/linux-2.6.x/
patch -p1 < support_cygwin_cross.patch
copy the file /uClinux-dist/uClibc/.config from a binary distribution to the
file
/uClinux/uClinux-dist/uClibc/extra/Configs/Config.${_CPU}.default (where
${_CPU} is for example m86k)
or run
/uClinux/uClinux-dist/uClibc/make config
to make one yourself and save /uClinux/uClinux-dist/uClibc/.config to the
file
/uClinux/uClinux-dist/uClibc/extra/Configs/Config.${_CPU}.default (where
${_CPU} is for example m86k)
./build-uclinux-tools.sh continue 2>&1 | tee errs.txt
during STAGE1 all files are extracted
before STAGE3 I had to make a comment (because of linking errors) of line 31
(LIBS := -lcygwin $(LIBS)) in the file
/uClinux/elf2flt-20060608/Makefile.in
mkdir /tftpboot
cd /uClinux/uClinux-dist/uClibc
make clean
cd ..
make config
make dep
make
last but not least, build a binary archive for distribution.
cd /uClinux
./build-uclinux-tools.sh dist