linux-kernel - Re: [PATCH 2/2] objtool: Support CROSS

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Date:	Thu, 3 Mar 2016 13:43:14 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
Cc:	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 2/2] objtool: Support CROSS_COMPILE

Hi Josh,

Just a couple of quick comments ...

On Wed,  2 Mar 2016 18:39:37 -0600 Josh Poimboeuf <jpoimboe@...hat.com> wrote:
>
> diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
> index c4f0713..e4a6bd5 100644
> --- a/tools/objtool/Makefile
> +++ b/tools/objtool/Makefile

I was wondering if this would be more appropriate in scripts/objtool
since it is used during the building of the kernel.  Or does it have a
wider use?

> @@ -7,13 +7,19 @@ ARCH := x86
>  endif
>  endif
>  
> +# always use the host compiler
> +CC = gcc

We have HOSTCC with its associated HOSTCFLAGS etc ... I am not sure if
that is more appropriate (but it does take care of people using clang).

-- 
Cheers,
Stephen Rothwell