On Mon, 2012-04-16 at 12:33 +0800, Paul Wise wrote:
> I'm trying to get remote dependencies[1] to work. Is there any way to
> get the example Makefile [2] to always run wget to try and download
> remote.c but only rebuild remote.o and remote when remote.c was updated
> by wget? With [2], make always runs wget and always runs gcc.
>
>      1. http://lists.gnu.org/archive/html/help-gnu-utils/2009-04/msg00007.html
>      2. http://people.debian.org/~pabs/tmp/Makefile

Remove the .PHONY; that forces all targets that depend on it to always
rebuild.

Try:

        remote.c: FORCE
         wget -O tmp -N http://people.debian.org/~pabs/tmp/remote.c || { rm remote.c; exit 1; }
         cmp tmp $@ || cp tmp $@
         rm -f tmp
        FORCE:;

--
-------------------------------------------------------------------------------
Paul D. Smith <psmith@gnu....>          Find some GNU make tips at:
http://www.gnu.org                      http://make.mad-scientist.net
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist


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