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Re: Segmentation fault in make-3.81

From: Philip Guenther
Subject: Re: Segmentation fault in make-3.81
Date: Mon, 3 Aug 2009 07:49:56 -0700

On Mon, Aug 3, 2009 at 2:22 AM, Glenn Coombs<address@hidden> wrote:
> You're quite right and your solution above is indeed the sensible way to
> write it :-) However, I'd just been reading about the new features added in
> make 3.81 and was experimenting.

Well, be careful: $(eval) is great for removing fingers.  For example,
the value being assigned to CHIPNAME in this:
        $(eval CHIPNAME := $(shell echo $* | tr a-z A-Z))

has expansion performed on it twice.  That almost certainly isn't a
problem in this case, but if you overlook it here
then you might not remember it when it does matter.  That line would
be better written, IMO, as:
        $(eval CHIPNAME := $$(shell echo $$* | tr a-z A-Z))

> Still, having make throw a segmentation fault is bad so I figured it was
> worth reporting the issue so that the problem could be fixed.  After all,
> the next person to run into the same bug might not be using such a simple
> makefile with easy alternatives.


Philip Guenther

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