Build Systems

Open Embedded - System for
building full embedded images from scratch. Note that this is used
by the Yocto Project as it’s build
system (but see note below for more detail).
Buildroot - Easy-to-use embedded Linux
build system
OpenADK - Open Source Appliance
Development Kit
PTXdist
- Kconfig based build system developed by
  Pengutronix
- GPL licensed
- Video
  of a talk given by PTXdist maintainer Robert Schwebel at FOSDEM
  2009
Linux From Scratch
Nard SDK For industrial
embedded systems
LTIB - Linux Target Image Builder (by Stuart Hughes of FreeScale) -
see
http://savannah.nongnu.org/projects/ltib
- Slides and
  video
  of a talk on LTIB at the Ottawa Linux Symposium 2008
OpenBricks
- Embedded Linux Framework
- OpenBricks provides a set of packages, patches and shell-based
  rules that creates a toolchain and a rootfs with customized
  packages and features selection.
- Currently supports x86_32, x86_64, PowerPC, PowerPC64 and ARM
  architectures with either uClibc, Glibc or eGlibc C library.
Building Embedded
Userlands -
Presentation by Ned Miljevic & Klaas van Gend at the ELC 2008 which
compares different configuration and build systems.
Video
of the conference available.
Scratchbox Cross-Compilation Toolkit,
with support for x86 and arm.
OpenWRT Cross-Compilation Toolkit mainly
geared towards wireless routers but can be extended to other
platforms, with support for x86, MIPS and ARM.
Yocto Project - The Yocto Project
is an umbrella project which uses Open
Embedded as it’s build system.
- I have heard it argued that the Poky meta-data for Open Embedded
  actually constitute the primary build system for the Yocto
  Project. Since Open Embedded somewhat conflates the package data
  and the build scripts in the recipe files, there is some truth
  to this.