Re: [PATCH v2 3/5] kbuild: Use relative path for $(objtree)

[Michal Marek <mmarek@suse.cz>]

Dne 5.6.2014 17:56, Michal Marek napsal(a):
> From d4bc590f8716f7dde6b7bca319097ac30a8cb0b4 Mon Sep 17 00:00:00 2001
> From: Michal Marek <mmarek@suse.cz>
> Date: Thu, 5 Jun 2014 17:44:44 +0200
> Subject: [PATCH] um: Fix for relative objtree when generating x86 headers

Oops, this email got trapped in the mail queue on my machine. Can you
please check if the patch fixes your problem? I'd like to add it to the
kbuild branch and send it to Linus.

Thanks,
Michal

> 
> In an O= build, rely on the generated Makefile to call the main Makefile
> properly. When building in the source tree, we do not need to specify
> the -C and O= either. This fixes the problem when $(objtree) is a
> relative path and the -C changes the directory.
> 
> Reported-by: Richard Weinberger <richard.weinberger@gmail.com>
> Signed-off-by: Michal Marek <mmarek@suse.cz>
> ---
>  arch/um/Makefile | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/um/Makefile b/arch/um/Makefile
> index 36e658a..e4b1a96 100644
> --- a/arch/um/Makefile
> +++ b/arch/um/Makefile
> @@ -111,8 +111,7 @@ endef
>  KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
>  
>  archheaders:
> -	$(Q)$(MAKE) -C '$(srctree)' KBUILD_SRC= \
> -		ARCH=$(HEADER_ARCH) O='$(objtree)' archheaders
> +	$(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders
>  
>  archprepare: include/generated/user_constants.h
>  
>