Re: [PATCH] firmware: fix external firmware dependencies

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Hello Sascha,

On 16.01.24 10:10, Sascha Hauer wrote:
> A pbl is not rebuilt when the firmware file specified in fw-external-y
> changes.
> 
> $(patsubst %.gen.o,$(obj)/%.extgen.pbl.o, $(pbl-y)) is executed before
> pbl-y actually contains the contents of fw-external-y. Also we want to
> do the subsitution only for the external firmware files, not for pbl-y.
> 
> To fix this use a intermediate variable pbl-fwext-y instead of pbl-y and
> initialize it before usage.
> 
> Also, use $$(wildcard $(fwdir)/%) instead of $(fwdir)/% to successfully
> compile when the external firmware file is missing.
> 
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>

Thanks for fixing!

Reviewed-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>

Cheers,
Ahmad



> ---
>  firmware/Makefile | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/firmware/Makefile b/firmware/Makefile
> index 4c68817fc6..27504e9442 100644
> --- a/firmware/Makefile
> +++ b/firmware/Makefile
> @@ -42,6 +42,7 @@ fwobjdir := $(objtree)/firmware
>  
>  pbl-y     := $(addsuffix .gen.o, $(pbl-firmware-y))
>  obj-pbl-y := $(addsuffix .gen.o, $(firmware-y))
> +pbl-fwext-y := $(addsuffix .extgen.o, $(fw-external-y))
>  
>  FWNAME    = $(patsubst $(obj)/%.extgen.S,%,$(patsubst $(obj)/%.gen.S,%,$@))
>  FWSTR     = $(subst /,_,$(subst .,_,$(subst -,_,$(FWNAME))))
> @@ -104,9 +105,9 @@ $(patsubst %.gen.o,$(obj)/%.gen.o, $(obj-pbl-y)): $(obj)/%.gen.o: $(fwdir)/%
>  # The same for pbl:
>  .SECONDEXPANSION:
>  $(patsubst %.gen.o,$(obj)/%.gen.pbl.o, $(obj-pbl-y) $(pbl-y)): $(obj)/%.gen.pbl.o: $$(wildcard $(fwdir)/%)
> -$(patsubst %.gen.o,$(obj)/%.extgen.pbl.o, $(pbl-y)): $(obj)/%.extgen.pbl.o: $(fwdir)/%
> +$(patsubst %.extgen.o,$(obj)/%.extgen.pbl.o, $(pbl-fwext-y)): $(obj)/%.extgen.pbl.o: $$(wildcard $(fwdir)/%)
>  
> -pbl-y += $(addsuffix .extgen.o, $(fw-external-y))
> +pbl-y += $(pbl-fwext-y)
>  
>  targets := $(patsubst $(obj)/%,%, \
>                                  $(shell find $(obj) -name \*.gen.S 2>/dev/null))

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