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Date:	Thu, 17 Jul 2014 12:40:46 +0900
From:	Masahiro Yamada <>
To:	Sam Ravnborg <>
Cc:	Michal Marek <>,
	linux-kbuild <>,
	lkml <>,
	Thierry Reding <>,
	Stephen Rothwell <>,
	David Herrmann <>,
	Jiri Kosina <>
Subject: Re: [PATCH 3/6] samples: use uapiprogs support for seccomp

On Wed, 16 Jul 2014 12:31:21 +0200
Sam Ravnborg <> wrote:

> > 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.

Thanks for explaining this. It is clearer to me now.

At first I thought this patch was a clean-up,
but it is indeed a big improvement.

Best Regards
Masahiro Yamada

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