Re: [PATCH] scripts/Kbuild.include: Fix portability problem of "echo -e"

[Bernhard Walle <bernhard@bwalle.de>]

Am 26.02.12 18:48, schrieb Sam Ravnborg:
>> > --- a/scripts/Kbuild.include
>> > +++ b/scripts/Kbuild.include
>> > @@ -104,7 +104,7 @@ as-option = $(call try-run,\
>> >  # Usage: cflags-y += $(call as-instr,instr,option1,option2)
>> >  
>> >  as-instr = $(call try-run,\
>> > -	/bin/echo -e "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" -,$(2),$(3))
>> > +	printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" -,$(2),$(3))
>> >  
>> >  # cc-option
>> >  # Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
> Roman Zippel removed use of printf in this patch: beda9f3a13bbb22cde92a45f230a02ef2afef6a9
> 
> I cannot remember why - but it would be good if you could dig up
> why - just so we do not hit an old issue again.

Well, he used printf "$(1)", that's different from printf "%b\n" "$(1)"
since format strings inside $(1) would be interpreted.

But maybe Roman can comment on that? Cc'ing him.


Regards,
Bernhard