Re: temporary function variables in user defined make functions notblanked out

[Noel Yap]

Great.

Just so that it's in the archives, the workaround I'm using is to wrap the 
implementation of the function with an interface function that explicitly 
blanks out the variable:

# reverse list
# $(1) is the space-separated-list
# $(2) is the temporary storage for the result
define _reverse-list
  $(if $(strip $(1)), \
    $(call _reverse-list,$(call pop-front,$(1)),$(firstword $(1)) $(2)), \
    $(2))
endef

# reverse list
# $(1) is the space-separated-list
reverse-list = $(call _reverse-list,$(1),)

Thanks,
Noel
"Paul D. Smith" wrote:
> 
> If this is what I think it is then it's an undocumented feature (in that
> I knew about it before the release), but it has been changed to work "as
> you'd expect" (where arguments are blanked before being passed to
> recursive invocations of call) in CVS for the next release, and
> documented to work this way.
> 
> --
> -------------------------------------------------------------------------------
>  Paul D. Smith <address@hidden>          Find some GNU make tips at:
>  http://www.gnu.org                      http://make.paulandlesley.org
>  "Please remain calm...I may be mad, but I am a professional." --Mad Scientist

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