Cross Compile Environment for DNS-323

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What is this? This document shows how to build the D-LINK DNS-323 GPL toolchain, kernel and u-boot loader

Things you will need first

• Development System x86 based Debian based “Ubuntu Dapper”
• You will need the following tools: bison flex gcc-3.4 byacc g++-3.4 gettext patch
  • Check your active compiler version with gcc -v
  • If your compiler is newer then gcc-3.4 then change the /usr/bin/gcc symlink to point to /usr/bin/gcc-3.4 for building the toolchain - restore it when you are done
  • If g++ is newer than version 3.4 also change the /usr/bin/g++ symlink accordingly.
• Make sure libncurses5-dev is installed or you'll get termcap not found error
• Create a directory to build your source in

mkdir GPL

• Create a directory to download the sources into

mkdir GPL/zips

• Change into the GPL directory

cd GPL

• Download and extract my build_dns323.tgz the GPL directory

tar xzf build_dns323.tgz

• Download the GPL sources:

./wget_GPL

• Build the ARM UCLIBC toolchain

Fix the bug in the script build_uclibc: on line 24, replace .tar.gz with .tgz (obviously the extension of the tarballs changed)

The path to the gcc sources has changed, so we need to fix it:

tar xzf zips/uclibc-toolchain-src-20040609.tgz

edit the file: uclibc-toolchain-src-20040609/gcc-3.3.x/make/gcc-uclibc-3.3.mk Change the so that the path defined on line 23 reads:

GCC_SITE:=ftp://ftp.gnu.org/gnu/gcc/gcc-$(GCC_VERSION)

Now, since we have already uncompressed the tar file, we comment out lines 23 and 24 of build_uclibc by adding a # to that start of each line.
Save the modified file, then run the script:

./build_uclibc

And now you must fix your symlinks. cd to $GPL/uclibc-toolchain-src-20040609/gcc-3.3.x/toolchain_arm/arm-linux-uclibc/lib and fix all broken links:

   for lib in crypt dl m nsl pthread resolv rt thread_db util; do ln -sf lib${lib}-* lib${lib}.so; done
   ln -sf libuClibc-0.9.28.so libc.so

Note For each build script below - extract the corresponding file from the zips directory. Example:

   tar xzf zips/linux-2.6.12.6.tgz

This creates a directory called linux-2.6.12.6 that build_kernel knows about.

• Build the ARM kernel

fix bug in script build_kernel: on line 5, replace linux-2.6.6 by linux-2.6.12.6

./build_kernel

• Build the u-boot loader

./build_u-boot

• Build busybox

The script needs a change; add line export CC=arm-linux-gcc, then execute.

./build_busybox

• Build at

./build_at

Notes:

The ./build_uclibc script creates a script called setpath that can be used to compile other ARM uclibc programs later on.

Many of the remaining D-LINK sources have not been configured for being cross-compiled. In fact, the “Readme.txt” file they supply with the GPL sources has instruction that are just plain wrong.