Re: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched

[Vineet Gupta]

On 04/04/2013 11:06 PM, Stephen Warren wrote:

> +.SECONDARY: $(obj)/%.dtb.S
> +
>  $(obj)/%.dtb.S: $(obj)/%.dtb
>         $(call cmd,dt_S_dtb)
> 
> and no longer see make rm'ing the .dtb.S file. So, the .SECONDARY is
> behaving as expected, and should fix your problem.

Interestingly, if I make the file name explicit, .SECONDARY works for me too.

.SECONDARY: $(obj)/angel4.dtb.S

http://stackoverflow.com/questions/5426934/why-this-makefile-removes-my-goal

Is this a make bug or is it related to when the rule is parsed by make !

-Vineet
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