RE: how to see cpp(C preprocessor) output for a file?

Chan Kim
2021-12-14T14:56:07Z

Wow that would be very helpful.
Thank you!
Chan

> -----Original Message-----
> From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
> Sent: Tuesday, December 14, 2021 9:23 PM
> To: ckim@etri.re.kr; u-boot@lists.denx.de
> Subject: Re: how to see cpp(C preprocessor) output for a file?
>
> On 14/12/2021 09.23, ckim@etri.re.kr wrote:
> > Hello,
> >
> > Is there any way I can see the cpp output of a file (for example
> > arch/arm/lib/vsprintf.c) after the build? (in the Makefile option for
> > example)
>
> make foo/bar/baz.i
>
> for any foo/bar/baz.c file which normally produces foo/bar/baz.o.
>
> If you have a arch/bla/xyz.S file, you can similarly do
>
> make arch/bla/xyz.s
>
> to run the preprocessor on the .S code. And if you want to see the
> assembly generated from a .c file,
>
> make foo/bar/baz.s
>
> also works.
>
> Rasmus