How to port Newlib?
Jeff Johnston
jjohnstn@redhat.com
Wed Jul 11 09:46:00 GMT 2007
Matthew,
Take a look at the faq page for newlib. Go to:
http://sources.redhat.com/newlib
and click the faq link.
There is a brief section on porting newlib.
-- Jeff J.
Matthew Iselin wrote:
> I'm working on a hobby OS and want to port a simple C library so that
> I don't have to write the library myself (and so that eventually I can
> port GCC and binutils and have the OS self-hosting).
>
> The problem is, I don't know how to port newlib... I have a file
> called syscalls.c that I wrote which has implementation outlined as
> required in the documentation (libc.info, syscalls section) - every
> function (_exit, _open, et al).
>
> Where exactly do I put this code?
>
libgloss
> Also, when I built the library and tried to link with a simple "Hello
> World" program (the out-of-the-box version, no changes at all) I got
> "undefined reference to `printf'"... Any ideas?
>
add a linker script (xxxx.ld) to your libgloss package and then
compile/link specifying -Txxxx.ld The linker script can encapsulate all
the libraries needed to link to (e.g. libc libm libgcc ...). Check out
libgloss/mn10300/ and look at sim.ld or eval.d for examples of a linker
script.
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