Building a minimal Linux for Raspberry Pi [closed]

Answer 1

Start with openembedded. There are several links already dedicated to raspberry pi, such as:

• http://www.pimpmypi.com/blog/blogPost.php?blogPostID=7
• http://blogs.distant-earth.com/wp/?p=377
• http://www.openembedded.org/wiki/LayerIndex

Answer 2

You can also check out Buildroot, http://buildroot.org. We have a default configuration for the Rasberry-Pi, and several contributors are working on the support for this platform.