Re: [PATCH 2/2] kbuild: rename built-in.o to built-in.a

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On Sun, 18 Feb 2018 18:10:05 +0100
Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:

> Hi Nicholas.
> 
> On Sun, Feb 11, 2018 at 12:25:04AM +1000, Nicholas Piggin wrote:
> > Incremental linking is gone, so rename built-in.o to built-in.a, which
> > is the usual extension for archive files.
> > 
> > This patch does two things, first is a simple search/replace:
> > 
> > git grep -l 'built-in\.o' | xargs sed -i 's/built-in\.o/built-in\.a/g'
> > 
> > The second is to invert nesting of nested text manipulations to avoid
> > filtering built-in.a out from libs-y2:
> > 
> > -libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.a, $(libs-y)))
> > +libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y)))
> > 
> > Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>  
> 
> Renaming is welcome - .o files should not list files.
> Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> 
> Did you check that make clean / make mrproper continue to
> do the right thing?
> 
> I recalled we had "*.o" hardcoded somewhere but grep
> did not reveal any places that should matter.
> So likely it does.

Yes it seemed to just work. I guess .a files are already removed in
subdirectories. built-in.o was hard coded in the final link cleanup,
but the rename catches that.

Thanks,
Nick
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