Re: user input

[Noel Yap]

At one point I was trying to do something similar.  The problem I ran into was 
that the interactivity occurred each time the makefile was parsed and reparsed. 
 I've since put this on hold indefinitely.

Noel

"Paul D. Smith" wrote:
> 
> %% "Gustavo A. Baratto" <address@hidden> writes:
> 
>   gab> is there any other way to handle user input? I came up with this,
>   gab> but I think it is pretty lame. pretty sure there a smarter way to
>   gab> this...
> 
> Make is not designed to be an interactive tool; it's designed and
> intended to be non-interactive.  So, no, I don't know of any
> fundamentally better way to do what you're asking (although if it were
> me I wouldn't bother with creating shell scripts, etc. and I'd just
> do it something like this:
> 
>   QUERYUSER = $(shell echo "$1" 1>&2; read input; echo $$input)
> 
>   VALUE1 := $(call QUERYUSER, Enter value 1:)
>   VALUE2 := $(call QUERYUSER, Enter value 2:)
> 
> This does write the prompt to stderr instead of stdout, but...
> 
> But, if it _really_ were up to me I wouldn't use interactivity at all.
> I'd check if the variables were set and if not I'd just fail, and have
> people set them on the command line:
> 
>   ifndef VALUE1
>     $(error Please set the VALUE1 variable.")
>   endif
>   ifndef VALUE2
>     $(error Please set the VALUE2 variable.")
>   endif
> 
> --
> -------------------------------------------------------------------------------
>  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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