Re: arm-elf vs arm-linux

[Ralf Corsepius <ralf dot corsepius at rtems dot org>]

On Thu, 2005-11-03 at 15:27 +0100, Valentin Longchamp wrote:

> Yeah I know all of this ! But what if I for example compile a program 
> that is going to run on my bare chip without an OS or using for eCos 
> librairies with an an arm-linux toolchain ?
Then you will need yet another toolchain for ecos.

> What are the "real precise" difference ! I already know about linux 
> syscall and glibc and things like that !
Exactly this, different libcs, i.e. different syscalls, different sets
of functions implemented libc, and various tiny differences in detail
(different ABIs, different startup scripts, different system features
etc.).

>  I want to know what is going to 
> happen if I compile a program without OS call with arm-linux ?
It depends on what exactly you are doing and how you are doing it.
In most non-trivial cases, you won't get far.

The clean and (in mid-term) less troublesome solution is to use
different toolchains.

Ralf



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