Re: Checking that required variables have been set

[Philip Guenther]

On Wed, Jun 25, 2008 at 3:39 PM, Elmar Kurgpold <address@hidden> wrote:
> Hi, thank you for your help. This example didn't produce any output,
> ${missing} is empty.

Here's my test case:

$ cat Makefile
required = SOMETHING SOMETHING_ELSE
SOMETHING=foo
missing = $(foreach var,${required},$(if $(findstring
undefined,$(origin ${var})),${var}))

all:
        @echo ${missing}
$ make
SOMETHING_ELSE
$ make --version
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

This program built for i386-unknown-openbsd4.3
$


What do you get when you try that?


Philip Guenther