Howto compile uClinux tool chain under Cygwin (latest tool chain version of 20060615)

I just compiled the m68k-elf-tools (for M68K/Coldfire tools) under Cygwin, but 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:

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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:

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and save it to the uClinux directory: binutils-2.16.tar.gz elf2flt-20060608.tar.gz gcc-4.1.1.tar.bz2 genromfs-0.5.1.tar.gz


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to /uClinux/

vim 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

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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)

./ 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/

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 ./ dist

Reply to
Harro Haan
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I heard that µCLinux now is included in the standard 2.6 Kernel distribution and can be selected in the Kernel configuration. So why is it necessary to set up a tool chain especially with µC in mind ?

Thanks, Michael

Reply to
Michael Schnell

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