[OpenAFS-devel] [PATCH] handle nesting of vars in configure.in properly

[Derek Atkins]

Ken Raeburn <raeburn@raeburn.org> writes:

> $ ./configure --prefix=/afs/mycell.com/foo
> $ make all
> $ make install prefix=/afs/.mycell.com/foo
> 
> What value would you give for DESTDIR?

Well, where do you want to install it.  Note that what you say above
is equivalent to:

./configure --prefix=/afs/mycell.com/foo
make all
make install

(because the prefix isn't changing).  So your example needs neither
prefix-munging NOR DESTDIR.  Also keep in mind that sysconfdir (and
other dirs you can define) do not necessarily depend on prefix!
However, DESTDIR can move ALL of them at once :)

Using DESTDIR is more appropriate when you want to generate a package
(ala .deb or .rpm) where --prefix is generally in the local filesystem
but you don't want to install onto the local host, e.g:

./configure --prefix=/usr --sysconfdir=/etc
make all
make install DESTDIR=/var/tmp/root

Note that the equivalent install rule using 'prefix' would be:
	make install prefix=/var/tmp/root/usr sysconfdir=/var/tmp/root/etc

-derek
-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
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