Re: Newlib doubt

[Bharani Chadalavada <bharani dot chadalavada at nexsi dot com>]

"J. Johnston" wrote:

> Bharani Chadalavada wrote:
> >
> > Hi,
> >
> > I was trying to compile newlib using an i386->mips cross gcc. I have a
> > couple of questions.
> >  I realize that I need to provide my own implementation of close, read,
> > write etc for my applications to work.  But when I tried the above
> > compilation, newlib needed the following header files - machine/ansi.h,
> > stddef.h, limits.h etc.(this is just a partial list). Now what I don't
> > understand is, do I have to have these header files as target specific
> > stuff since I am compiling newlib as a target library or do I have to
> > have these stuff from the native host which is i386.
> > I was able to compile newlib when I gave the i386 specific header files
> > in the include path. But I am not sure if this is the right thing.
> >
> > I really appreciate your time and help.
> >
> > Thank you,
> > Bharani.
>
> Bharani,
>
>   You need to compile newlib for the target which in this case is mips.
> The header files in question should be supplied by your cross-compiler.  What did you specify when
> you configured newlib and did you personally build the cross-compiler?

Yes. I built the cross-compiler personally. Specifically, I am using a netbsd box and there is an
i386->mips cross compiler in the pkgsrc. But the header files in question do not get built as a part
of the cross compiler. But why would the cross compilet supply machine/ansi.h for example? Are they
not mips machine specific stuff(in this case)??

Basically, I need NetBSD running on my target machine and newlib for the user-land. So, I chose the
cross compiler that is part of the netbsd pkgsrc.

And the configuration that I used to build newlib is

configure --target=mips-mips-elf --prefix=mips-mips-elf.

So now, my question is, if the cross-compiler does not provide them, do I have to write my own??

Thank you very much,
Bharani.

>
>
> -- Jeff J.