Date: Mon, 28 Apr 2014 18:57:52 -0600 From: Ian Lepore <ian@FreeBSD.org> To: Warner Losh <imp@bsdimp.com> Cc: FreeBSD Current <current@FreeBSD.org> Subject: Re: Make variables to force non default libraries and includes? Message-ID: <1398733072.61646.251.camel@revolution.hippie.lan> In-Reply-To: <80F941B9-3A54-4059-BF99-A5F59A9731DA@gmail.com> References: <535E07C9.5060309@freebsd.org> <80F941B9-3A54-4059-BF99-A5F59A9731DA@gmail.com>
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On Mon, 2014-04-28 at 18:36 -0600, Warner Losh wrote:
> On Apr 28, 2014, at 1:48 AM, Julian Elischer <julian@FreeBSD.org> wrote:
>
> > I need to do the equivalent of "cd /usr/src/cddl/usr.sbin/dtrace; make DESTDIR=/mumble all install”
>
> cd /usr/src
> make distributeworld DESTDIR=/mumble
> cd cddl/usr.sbin/dtrace
> make buildenv
> make all install
>
> > but it pulls in libraries from the base system, which differ slightly from those in the source tree.
>
> The above will create the right /mumble hierarchy, and will pull the libraries from the build rather than the local system.
>
> > How can I force it to use /mumble2/include and /mumble2/lib instead of / ?
> >
> > I can pre-populate /mumble2 using "make buildworld", "make libraries", and "make includes" but
> > I need to be able to do selective builds of just subdirectories after that.. I haven't spotted the right way of forcing the use of the "--system_root /mumble2" option in the compiles.
> >
> > I know we do it in 'buildworld' is there a more generic way?
> >
> > I have been looking in the .mk files but I haven't spotted it so far.
>
> You’re asking for some serious split-brain action. chroot builds are likely your best option. There’s no easy way to force this, although you might get some milage out of WMAKEENV options, but I think we bake most of the where to look for things options into the binaries. One crazy option would be to set CC=“cc —sysroot /mumble” but I’m sure there be dragons there…
>
> Good luck with this crazy, never have we supported it very well, option :)
>
> Warner
Actually the hooks are in place to do this stuff. Instead of make
buildenv to get an interactive shell you can do something like
BLDENV=`${MAKE} buildenvvars`
chroot buildchroot/ "env -i $${BLDENV} cd /usr/src/somewhere && \
make all install"
-- Ian
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