Didj Build Environment

Buildcross is able to build a working toolchain that supports C and C++.

Prebuilt
Since it can be a pain to build the cross compiler on Windows, I'm providing a prebuilt toolchain. 32 bit Ubuntu 9.10 does some incorrect things during GCC's build that causes the built to fail. So I've provide that one too.

Windows


 * Windows
 * (broken) Fast Windows mirror
 * (broken) Fast Windows mirror

Extract to C:\ (full path to bin is C:\winarm\didj\bin) It should work in the root of any partition.

Ubuntu 9.10 (Karmic, but also known to work fine on 10.4-Lucid)
 * 32 bit Ubuntu 9.10
 * (broken) Fast 32 bit Ubuntu 9.10 mirror
 * (broken) Fast 32 bit Ubuntu 9.10 mirror

Extract to /usr/local

 Debian Lenny 


 * 64 bit Debian Lenny
 * (broken) Fast 64 bit Debian Lenny mirror

Extract to /usr/local

Additional mirrors would be welcomed.

Prerequisites

 * git (In deb based distros, it's in the git-core package)
 * gmp (In deb based distros it's often called libgmp-dev or libgmp3-dev)
 * mpfr (In deb based distros it's often called libmpfr-dev)
 * GCC & Binutils
 * Flex
 * Bison
 * Make
 * Makeinfo (In deb based distros it's in the texinfo package)
 * patch
 * diff
 * wget
 * And a Unix environment (Only really tested on Linux)

Steps

 * git clone git://github.com/losinggeneration/buildcross.git
 * cd buildcross
 * sudo mkdir /usr/local/didj
 * sudo chown [your username]:[any group] /usr/local/didj
 * MAKE="make -j3" ./buildcross.sh didj -bl
 * Replace -j3 with however many processors/cores you have +1

After that, the cross compiler should be built. You should now be able to build binaries for the Didj. I'd suggest adding /usr/local/didj/bin to your PATH. This is often in $HOME/.profile. Depending on your shell, Bash compatible shells can use: export PATH=/usr/local/didj/bin:$PATH

Usage
The following all assumes the PATH has been correctly setup.

Simple usage
Typical usage for compiling and linking a single file: arm-linux-uclibcgnueabi-gcc -o hello hello.c

Autotools
Typical usage for cross compiling a project that uses autotools ./configure --host=arm-linux-uclibcgnueabi make

CMake cross compiler rules
Save this file as ~/didj/didj.cmake SET(CMAKE_SYSTEM_NAME Linux) SET(CMAKE_SYSTEM_VERSION 1) SET(CMAKE_C_COMPILER  /usr/local/didj/bin/arm-linux-uclibcgnueabi-gcc) SET(CMAKE_CXX_COMPILER /usr/local/didj/bin/arm-linux-uclibcgnueabi-g++) SET(CMAKE_FIND_ROOT_PATH /usr/local/didj /home/harley/didj/rootfs /home/harley/didj/custom/rootfs) SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 * 1) this one is important
 * 1) this one not so much
 * 1) specify the cross compiler
 * 1) where is the target environment
 * 1) search for programs in the build host directories
 * 1) for libraries and headers in the target directories

Then use this command to build it. It's better to build in a clean subdirectory in CMake projects. mkdir build && cd build cmake -DCMAKE_TOOLCHAIN_FILE=~/didj/didj .. make

Linux Kernel
make ARCH=arm CROSS_COMPILE=arm-linux-uclibcgnueabi-

Scons
To be written.

Others
Any others you run into please document here.

Environment Setup
'''You will find it useful to create a file named 'crosscompile' with the contents below (edit accordingly for your directory structure). Whenever you want to compile anything for the device, enter 'source crosscompile' first to set the environment variables.'''