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From: Sascha Hauer <sha@pengutronix.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org, mfe@pengutronix.de, rcz@pengutronix.de
Subject: Re: [PATCH master] firmware: fix dependency tracking for PBL firmware files
Date: Wed, 6 Sep 2023 16:14:02 +0200	[thread overview]
Message-ID: <20230906141402.GF492117@pengutronix.de> (raw)
In-Reply-To: <20230905142328.2935148-1-a.fatoum@pengutronix.de>

On Tue, Sep 05, 2023 at 04:23:28PM +0200, Ahmad Fatoum wrote:
> $(wildcard $(fwdir)/%) was added to allow for optional firmware, but in
> return it broke dependency tracking, because it was evaluated before the
> static pattern rule it's a part of.
> 
> Fix the dependency tracking by only evaluating it in a secondary
> expansion. That this works as expected can be verified with:
> 
>   make -p | grep 'imx8mn-bl31.bin.gen.pbl.o:.*imx8mn-bl31.bin '
> 
> Which will return no result before this patch, but with it applied, it
> will correctly show the dependency. Manual touching and rebuilding also
> builds the firmware now as expected:
> 
>   AS [P]  firmware/imx8mm-bl31.bin.gen.pbl.o
> 
> Fixes: 5b171b7b7eda ("firmware: turn missing firmware into linker error")
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
>  firmware/Makefile | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Applied, thanks

Sascha

> 
> diff --git a/firmware/Makefile b/firmware/Makefile
> index 5853950dfe4e..4fca83f808f6 100644
> --- a/firmware/Makefile
> +++ b/firmware/Makefile
> @@ -99,7 +99,8 @@ clean-files += *.sha.bin *.sum
>  $(patsubst %.gen.o,$(obj)/%.gen.o, $(obj-pbl-y)): $(obj)/%.gen.o: $(fwdir)/%
>  
>  # The same for pbl:
> -$(patsubst %.gen.o,$(obj)/%.gen.pbl.o, $(obj-pbl-y) $(pbl-y)): $(obj)/%.gen.pbl.o: $(wildcard $(fwdir)/%)
> +.SECONDEXPANSION:
> +$(patsubst %.gen.o,$(obj)/%.gen.pbl.o, $(obj-pbl-y) $(pbl-y)): $(obj)/%.gen.pbl.o: $$(wildcard $(fwdir)/%)
>  $(patsubst %.gen.o,$(obj)/%.extgen.pbl.o, $(pbl-y)): $(obj)/%.extgen.pbl.o: $(fwdir)/%
>  
>  pbl-y += $(addsuffix .extgen.o, $(fw-external-y))
> -- 
> 2.39.2
> 
> 
> 

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      reply	other threads:[~2023-09-06 14:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-05 14:23 Ahmad Fatoum
2023-09-06 14:14 ` Sascha Hauer [this message]

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