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

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Date:	Wed, 16 Jul 2014 18:43:51 +0900
From:	Masahiro Yamada <yamada.m@...panasonic.com>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Michal Marek <mmarek@...e.cz>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	David Herrmann <dh.herrmann@...glemail.com>,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: [PATCH 3/6] samples: use uapiprogs support for seccomp

Hi Sam,


On Sun, 13 Jul 2014 20:42:51 +0200
Sam Ravnborg <sam@...nborg.org> wrote:

> Reduce complexity of seccomp Makefile by introducing use of uapiprogs support.
> Build testet with i686 only.

tested ?

(Ditto in 4/6)



> --- a/samples/seccomp/Makefile
> +++ b/samples/seccomp/Makefile
> @@ -1,48 +1,4 @@
> -# kbuild trick to avoid linker error. Can be omitted if a module is built.
> -obj- := dummy.o
> +uapiprogs-$(CONFIG_SECCOMP_FILTER) := bpf-fancy dropper bpf-direct
>  
> -hostprogs-$(CONFIG_SECCOMP_FILTER) := bpf-fancy dropper bpf-direct
> +bpf-fancy-y := bpf-fancy.o bpf-helper.o
>  
> -HOSTCFLAGS_bpf-fancy.o += -I$(objtree)/usr/include
> -HOSTCFLAGS_bpf-fancy.o += -idirafter $(objtree)/include
> -HOSTCFLAGS_bpf-helper.o += -I$(objtree)/usr/include
> -HOSTCFLAGS_bpf-helper.o += -idirafter $(objtree)/include
> -bpf-fancy-objs := bpf-fancy.o bpf-helper.o
> -



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 ?)


Best Regards
Masahiro Yamada

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