[Buildroot] [PATCHv4] core/pkg-generic: check proper package installation

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, All,

On 2015-11-29 18:58 +0100, Thomas Petazzoni spake thusly:
> On Fri,  6 Nov 2015 20:15:30 +0100, Yann E. MORIN wrote:
> > Some packages misbehave, and install files in either of;
> >   - $(STAGING_DIR)/$(O) or $(TARGET_DIR)/$(O),
> >   - $(STAGING_DIR)/$(HOST_DIR) or $(TARGET_DIR)/$(HOST_DIR).
> > 
> > One common reason for that is that pkgconf now prepends the sysroot path
> > to all the paths it returns. Other reasons vary, but are mostly due to
> > poorly writen generic-packages.
> > 
> > Add a check for those locations, as part of the command blocks for the
> > target and staging installs.
> > 
> > Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> > Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> > Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
> > Cc: Arnout Vandecappelle <arnout@mind.be>
> > Cc: Peter Seiderer <ps.report@gmx.net>
> > Cc: Romain Naour <romain.naour@openwide.fr>
> 
> On my side, I am not supper happy with the additional complexity added
> to the generic package infrastructure (yet again 19 lines added to
> pkg-generic.mk, to verify for a very specific type of failure).
> 
> Could we instead use TARGET_FINALIZE_HOOKS for this check (yes it means
> you wouldn't know which package has installed the files, but it's
> generally trivial to find from the name/path of the installed files) ?

Well, I for one would prefer we fail right on the culprit package,
rather than port-pone the check until the end. This way, it is obvious
which package is the cuplrit.

Except we now have a file-> package mapping (thanks to your graph-size),
so we could re-use that in a target-inalise hook, indeed.

Well, except maybe not... Can target-finalise be called before we have
all the host packages (most notably the filesystem image generators)?

> Or alternatively, use the existing instrumentation hooks.

Arnout did not like that, hence why I put in the common install rule.

Of course, with my comment above, I agree we could postpone it up to
target-finalise (if the minor nit above is answered negatively).

> And then, regardless of the solution being used, put this stuff in a
> new .mk file (whose name shall be determined) which would ultimately
> contain the implementation of other sanity checks (for example the
> sanity check that all binaries are built for the correct target
> architecture).

OK. Thanks! :-)

Regards,
Yann E. MORIN.

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