From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Date: Sun, 14 Jun 2009 16:29:39 +0200
Subject: [U-Boot] [PATCH/next v3] allow boards to customize
	compiler	options on a per-file/dir basis
In-Reply-To: <1244986380-24157-1-git-send-email-vapier@gentoo.org>
References: <1242630364-2510-1-git-send-email-vapier@gentoo.org>
	<1244986380-24157-1-git-send-email-vapier@gentoo.org>
Message-ID: <20090614142939.GG22102@game.jcrosoft.org>
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To: u-boot@lists.denx.de

On 09:33 Sun 14 Jun     , Mike Frysinger wrote:
> With our Blackfin boards, we like to build the compression routines with
> -O2 as our tests show a pretty good size/speed tradeoff.  For the rest of
> U-Boot though, we want to stick with the default -Os as that is mostly
> control code.  So in our case, we would add a line like so to the board
> specific config.mk file:
> 	CFLAGS_lib_generic += -O2
> 
> Now all files under lib_generic/ will have -O2 appended to their build.
> 
> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> ---
> v3
> 	- updated to apply to next after Jean's changes
> 
>  config.mk |    8 +++++---
>  1 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/config.mk b/config.mk
> index 8d47a8e..f5b9c28 100644
> --- a/config.mk
> +++ b/config.mk
> @@ -206,11 +206,13 @@ export	TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
>  
>  #########################################################################
>  
> +# Allow boards to use custom optimize flags on a per dir/file basis
> +BCURDIR := $(notdir $(CURDIR))
>  $(obj)%.s:	%.S
> -	$(CPP) $(AFLAGS) -o $@ $<
> +	$(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $<
we can drop this one as there is no obj %.s

Best Regards,
J.