Tiny C Compiler - Make the best x86 Linux C compiler in less than 8192 bytes.
-----------------------------------------------------------------------------

Differences with ANSI C:
-----------------------

- Preprocessor: only '#define xx yy' is supported. Recursive defined
  supported. All other directives are not supported.

- Types: int, char, void, pointers and functions are
  supported. Function pointers are also supported. struct, union and
  typedef not supported.

- Operations: 'x=' not supported.

- Keywords: the following keywords are supported: int void char if
  else while break return for.

- Symbol scope: local variables supported, but they cannot have the
  same name as global variables.

Features:
--------

- SMALL! You can compile and execute C code everywhere, for example on
  rescue disks.

- FAST! tcc generate x86 code. No byte code overhead.

- Compile and execute C source directly. No linking necessary.

- C script supported : just add '#!/usr/bin/tcc' at the first line of
  your C source, and execute it directly from the command line !

- All C library functions can be used via dynamic linking.

-------------------------------------------------------------------------
An even smaller compiler can be build from tcc by activating the
define 'TINY'. The following changes from tcc:

- Comments are not supported.

- Parsing: No char constants. No '\r' and '\t' in strings. Only base
  10 numbers are supported.

- no 'for' loops.

- Operations: '?:', ',', 'x=', shifts, '&&', '||', '!', '~' not supported.