Re: [Xen-devel] [PATCH v2 4/4] tools/build: change order of config/Tools.mk inclusion

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Ian Jackson wrote:
> Roger Pau Monne writes ("[PATCH v2 4/4] tools/build: change order of config/Tools.mk 
> inclusion"):
> > Tools.mk contains variables that should be used when processing the
> > top level Config.mk for the tools, specially the CONFIG_DIR variable,
> > which is not honoring the PREFIX variable correctly, since when
> > CONFIG_DIR is set the PREFIX var is still not defined.
> I'm not sure I really understand how PREFIX is supposed to work.
>
> In a normal package PREFIX would be set to /usr, /usr/local, /opt, or
> whatever, by the person doing the installation.
>
> The code in StdGNU.mk seems to be capable of generating paths like
>    /usr/local/var/run/xen
> which is a bit mad.
Not so much, NetBSD has /usr/pkg/etc for example, for configuration of 
packages installed from ports.
Maybe adding the following to config/Linux.mk would be suitable:

XEN_LOCK_DIR = /var/lib
XEN_RUN_DIR = /var/run/xen
XEN_PAGING_DIR = /var/lib/xen/xenpaging
CONFIG_DIR = /etc

So we don't end up putting those under /usr/local or some strange user 
supplied path.
> Also PREFIX is set in StdGNU.mk.  Why is it also set in Tools.mk ?
Configure scripts have a very common option, --prefix, which is saved 
into Tools.mk as PREFIX, this is what should be used as prefix for 
installation.

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