AW: WG: AW: use gmp on microcontroller freescale coldfire

[Drößler Tobias]

> We don't provide any configuration options for making GMP that small.

We usually create a binary file, which will be programmed /flashed and holds the whole program code . 
Is it not possible (or default set) that the linker only places used (called) code form the lib inside the binary file ? 


We still include stdio , stdlib - I am not sure if this is a versions known from the desktop pc , or if it is a adapted one for the controller. 
"printf", by the way,  is not used because we have no display / screen. 

regards Tobias


-----Ursprüngliche Nachricht-----
Von: tg at gmplib.org [mailto:tg at gmplib.org] 
Gesendet: Samstag, 22. Juni 2013 10:21
An: Drößler Tobias
Cc: gmp-discuss at gmplib.org
Betreff: Re: WG: AW: use gmp on microcontroller freescale coldfire

Drößler Tobias <Droessler.Tobias at ik-elektronik.com> writes:

  We have a 32 bit "system":) /CPU - and 128 KiB Flash for execution
  code.  And I think I need about 5 real operations from mpz ( add, mul,
  mpz_invert, mod, compare (, set, clear)), and not the hole
  functionality of the lib. So if only these functions (and
  dependencies) linked to our execution -bin file, it should not fill
  more than 32 kB.
  

There is always mini-gmp, a part of GMP 5.1 releases, which in itself (without lib deps) is a bit less than 32 KiB object code.
Unfortunately, mini-gmp does not currently support incremental linking.

I suspect you'll find it challenging to fit the C library's printf and its dependencies in 128 KiB.

--
Torbjörn