RTL development articles
From Lazarus-ccr
Information about building the FPC project is in the so called buildfaq(pdf), see http://www.stack.nl/~marcov/buildfaq.pdf
Some notes about the Unix RTL are on http://www.stack.nl/~marcov/unixrtl.pdf
Comments can be written below, or reported to marco at freepascal dot org
System unit structure - information about structure of unit System (specification of the platform specific helpers and shared code and their behaviour - for porting to new platforms)
Porting the Unix rtl to a new target
