linux-kernel - Re: [PATCH] kdbus/samples: skip on CROSS

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Date:	Thu, 30 Jul 2015 09:33:07 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	David Herrmann <dh.herrmann@...il.com>,
	Shuah Khan <shuahkh@....samsung.com>
Cc:	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Daniel Mack <daniel@...que.org>,
	Djalal Harouni <tixxdz@...ndz.org>
Subject: Re: [PATCH] kdbus/samples: skip on CROSS_COMPILE

On Thu, Jul 30, 2015 at 06:13:25PM +0200, David Herrmann wrote:
> Apparently we cannot rely on up-to-date kernel headers to be available
> when cross-compiling, not even for HOSTCC. That's sad, but it's how it
> is. Skip samples on cross-compiles as suggested by Paul, so allmodconfig
> runs smoothly again.
> 
> Tested-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> Signed-off-by: David Herrmann <dh.herrmann@...il.com>
> ---
>  samples/kdbus/Makefile | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/samples/kdbus/Makefile b/samples/kdbus/Makefile
> index 137f842..dbd9de8 100644
> --- a/samples/kdbus/Makefile
> +++ b/samples/kdbus/Makefile
> @@ -1,9 +1,13 @@
>  # kbuild trick to avoid linker error. Can be omitted if a module is built.
>  obj- := dummy.o
>  
> +ifndef CROSS_COMPILE

This really feels like the wrong solution.

> +
>  hostprogs-$(CONFIG_SAMPLE_KDBUS) += kdbus-workers
>  
>  always := $(hostprogs-y)
>  
>  HOSTCFLAGS_kdbus-workers.o += -I$(objtree)/usr/include
>  HOSTLOADLIBES_kdbus-workers := -lrt
> +
> +endif

Shuah, how should we fix this "properly"?  How is this resolved for the
kernel test scripts, it should have the same issue that the samples do.

thanks,

greg k-h
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