Re: [PATCH 3/6] samples: use uapiprogs support for seccomp

Sam Ravnborg
2014-07-16T10:31:29Z

On Wed, Jul 16, 2014 at 06:43:51PM +0900, Masahiro Yamada wrote:
> Hi Sam,
>
>
> On Sun, 13 Jul 2014 20:42:51 +0200
> Sam Ravnborg <sam@ravnborg.org> wrote:
>
> > Reduce complexity of seccomp Makefile by introducing use of uapiprogs support.
> > Build testet with i686 only.
>
> tested ?
>
> (Ditto in 4/6)
Thanks - will fix.

> I am interested in this series.
>
> Forgive me if I am asking a stupid question..
>
>
> How can I build hostprogs for the same host as the kernel?
> (I mean, how can I override $(HOSTCC) for cross-compiling ?)

One way to do this:

make ARCH=sparc CROSS_COMPILE=sparc-leon-linux-gnu- HOSTCC=sparc-leon-linux-gnu-gcc

Notice that I override HOSTCC as part of the make comand line.
This allows me to override the "=" assignment in the top-level Makefile.

But then my build breaks as fixdep do not run on my host.

If you in general want to build a binary for the target then uapiprogs come in handy.
Only caveat here is that you will be using the exported kernel headers.

Sam