Re: Announce: initrd-tftp 0.1

[Werner Almesberger]

Erik Andersen wrote:
> Don't forget that when run as an initrd, it would have to be staticly
> linked against libc and friends (making it at weigh in at about 300k),
> or it has to be assembler -- very small but throwing out cross-platform
> portability, and making it subject to kernel interface changes.

Or you just implement those few libc functions you really need. For an
example, look at the micro-shell I once wrote for the linux-7k project,
when I didn't even have a libc to link with:
ftp://lrcftp.epfl.ch/pub/people/almesber/psion/ush-2.tar.gz

$ arm-linux-size ush.arm 
   text    data     bss     dec     hex filename
   1980       0       4    1984     7c0 ush.arm

Also, there are probably plenty of libc functions that don't pull in
huge additional components, so you don't really have to do everything
yourself.

- Werner

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