Toolchain to develop software for DNS-300

Toolchain is set of tools to compile software for some device/platform.
Two types of toolchains are possible:

• toolchain for crosscompile - to compile software on PC compatible computer
• native toolchain - to compile software directly on DNS-300

I've created my toolchains using following software:

• binutils-2.17
• gcc-4.1.1
• glibc-2.2.5 (binaries from OpenRG toolchain)
• header files for glibc-2.2.5 from OpenRG toolchain
• Linux kernel header files from DLink's Linux kernel for DNS-312H

mkdir -p /opt/src
mkdir -p /opt/build
mkdir -p /opt/toolchain
mkdir -p /opt/toolchain-native

cd /usr/bin/
ln -s ar i686-pc-linux-gnu-ar
ln -s as i686-pc-linux-gnu-as
ln -s cpp i686-pc-linux-gnu-cpp
ln -s gcc i686-pc-linux-gnu-gcc
ln -s gcov i686-pc-linux-gnu-gcov
ln -s ld i686-pc-linux-gnu-ld
ln -s ldd i686-pc-linux-gnu-ldd
ln -s nm i686-pc-linux-gnu-nm
ln -s objcopy i686-pc-linux-gnu-objcopy
ln -s objdump i686-pc-linux-gnu-objdump
ln -s ranlib i686-pc-linux-gnu-ranlib

cd /opt/src
tar -xzf ./binutils-2.17.tar.gz
mkdir -p /opt/build/bilutils-2.17
cd /opt/build/binutils-2.17/

../../src/binutils-2.17/configure \
  --prefix=/opt/toolchain \
  --target=armv4lt-dns300-linux \
  --with-sysroot=/opt/toolchain-native/usr/local/

make
make install

cd /opt/src
tar -xzf ./gcc-4.1.1.tar.gz
mkdir -p /opt/build/gcc-4.1.1-cross
cd /opt/build/gcc-4.1.1-cross/
PATH=/opt/toolchain/bin:$PATH \
../../src/gcc-4.1.1/configure --prefix=/opt/toolchain \
  --build=i686-pc-linux-gnu \
  --host=i686-pc-linux-gnu \
  --srcdir=../../src/gcc-4.1.1 \
  --with-sysroot=/opt/toolchain/armv4lt-dns300-linux \
  --with-as=/opt/toolchain/bin/armv4lt-dns300-linux-as \
  --with-ld=/opt/toolchain/bin/armv4lt-dns300-linux-ld \
  --enable-languages=c \
  --target=armv4lt-dns300-linux \
  --with-build-time-tools=/opt/toolchain/armv4lt-dns300-linux/bin \
  --with-float=soft \
  --disable-multilib

To be continued…

I've compiled native toolchain by my crosscompile toolchain. Maybe sometime, I'll describe compilation procedure, but now you can just download my native toolchain and use it.

1. First you should have installed IPKG package libfloat, because it's necessary for my toolchain
2. Download my archive http://dns-300.sergeyzh.org/files/dns300-toolchain-1.1.tar.gz
3. Copy archive to DNS-300.
4. Unpack this to somewhere. For example I have it in /home/sergey/toolchain/.
   cd /home/sergey/toolchain ; tar -xzf dns300-toolchain-1.1.tar.gz
5. Create symbolic link /opt/toolchan-native/ pointing to your unpacked toolchain.
   For my system it is command: ln -s /home/sergey/toolchain /opt/toolchain-native

Note: my toolchain contains only compiler + gcc libraries from OpenRG. To compile most programs you should compile and install additional binaries like: awk, automake, findutils, etc…

1. Add path to toolchain to PATH. export PATH=/opt/toolchain-native/usr/local/bin:$PATH
2. Run gcc. You should see message:

root@DNS-300:/# gcc
gcc: no input files
root@DNS-300:/#

So now you can use GCC to compile very simple programs, like hello-world.c. To compile complex project you should compile additional binaries. First try to compile sed to test.

1. Download sed archive from GNU FTP.
2. Unpack it somewhere. For example: /home/sergey/src/sed/
3. Configure this with your toolchain.

./configure --prefix=/opt/toolchain-native/usr/local/

1. Compile this: make
2. Install this: make install. This step is unecessary, because toolchain contains sed already, but you can test how 'install' works.

1. Configure source with –prefix=/home/root/opt/usr , because other programs in IPKG for DNS-300 are compiled with the same prefix.
2. Install your program into /home/root/…, by make install
3. Test your program.
4. Create IPKG module for this.