[RFC PATCH] powerpc: crypto/vmx: clean up generated files

[Naveen N. Rao]

On 2016/11/16 09:02PM, Michael Ellerman wrote:
> "Naveen N. Rao" <naveen.n.rao at linux.vnet.ibm.com> writes:
> 
> > ..as stray .S files result in build errors, especially when using
> > cross-compilers.
> 
> They should be cleaned on make clean, so adding them to clean-files
> seems correct.
> 
> > More specifically, the generated .S files are endian-specific and will break
> > subsequent builds targeting the other endian architecture.
> 
> But that indicates we're missing an if_changed somewhere, ie. switching
> endian should cause them to be regenerated.
> 
> Also they should be generated into $(obj) not $(src) I think.
> 
> How about this?

Nice!

> 
> diff --git a/drivers/crypto/vmx/Makefile b/drivers/crypto/vmx/Makefile
> index de6e241..52f6ae9 100644
> --- a/drivers/crypto/vmx/Makefile
> +++ b/drivers/crypto/vmx/Makefile
> @@ -10,10 +10,10 @@ endif
>  quiet_cmd_perl = PERL $@
>        cmd_perl = $(PERL) $(<) $(TARGET) > $(@)
> 

Looks like we also need:

targets += aesp8-ppc.S ghashp8-ppc.S

> -$(src)/aesp8-ppc.S: $(src)/aesp8-ppc.pl
> -       $(call cmd,perl)
> +$(obj)/aesp8-ppc.S: $(src)/aesp8-ppc.pl FORCE
> +       $(call if_changed,perl)
>    
> -$(src)/ghashp8-ppc.S: $(src)/ghashp8-ppc.pl
> -       $(call cmd,perl)
> +$(obj)/ghashp8-ppc.S: $(src)/ghashp8-ppc.pl FORCE
> +       $(call if_changed,perl)
> 
>  .PRECIOUS: $(obj)/aesp8-ppc.S $(obj)/ghashp8-ppc.S

I will send a v2 with these changes.

Thanks,
Naveen