RE: include files with :=

[Dill, John]

>I am still trying to track down where exactly my lag time is coming from, and 
>it doesn't >appear to be from using the include directive by itself.  My 
>question is how makefile
>evaluates variables that are defined using ':=' with respect to include files.
>
>If I have a file include_me.mk which contains:
>
>my_var:=$(shell script)
>
>and I have included this file several times (indirectly through my file's 
>dependent
>include files).  Does make re-evaluate this variable assignment each time 
>'include
>include_me.mk' appears?
>
>If that's the case, then I think that's where my problem is.

I did some more investigation and found that this is where my performance 
problem is.  It appears that time increases linearly with the number of times 
the include file with ':=' variables are included, which means make is 
evaluating it each time it is seen like it should.  Adding inclusion guards to 
my include files should fix my performance problem.

John