[Buildroot] [PATCH 05/12] package: implement a 'local' site method

[Yann E. MORIN]

Thomas, All,

On Monday 25 July 2011 103710 Thomas De Schampheleire wrote:
> On Mon, Jul 25, 2011 at 9:20 AM, Yann E. MORIN
> <yann.morin.1998 at anciens.enib.fr> wrote:
> > Thomas*2, All,
> >
> > On Monday 25 July 2011 091116 Thomas Petazzoni wrote:
> >> Le Sun, 24 Jul 2011 16:50:50 +0200,
> >> Thomas De Schampheleire <patrickdepinguin+buildroot at gmail.com> a écrit :
> >> > But this also means that you cannot properly use a 'local' package
> >> > from two buildroot installations, since the compilation process
> >> > happens in the local directory. Is that correct?
> >>
> >> Yes, this is unfortunately correct. The only other options would be :
> >>
> >>  * Do the build out-of-tree, but this is already been discussed in
> >>    another thread as being highly problematic for many packages ;
> >>
> >>  * Make a copy of the complete source tree. This is reasonable for
> >>    small projects, but for example, for something like the kernel, it
> >>    is largely unreasonable, and one of the packages for which the
> >>    "source override" mechanism is the most interesting is the kernel
> >>    package.
> >>
> >> Do you see any other option ?
> >
> > Fake an out-of-tree build with some unionfs tricks. There is a FUSE-based
> > unionfs that works pretty well:
> >    http://podgorny.cz/moin/UnionFsFuse
> >
> > The trick is to lure the package by making it believe it's being built
> > in-tree, while in fact the package dir is a unionfs mount with:
> >  - the package source dir as the lowest-level, read-only branch
> >  - the actual build dir as the highest-level, read-write branch
> 
> But this creates a dependency on the host kernel, right? It needs to
> have FUSE support.

Indeed. But what (recent) distro does not have FUSE enabled by default ?
Certainly, Debian has, so does Ubuntu.

Regards,
Yann E. MORIN.

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