file checksums versus SRC_URI globs

["Rasmus Villemoes" <rasmus.villemoes@prevas.dk>]

Hi,

We have a recipe that uses

  SRC_URI += "file://somedir/*"

and we have noticed that changing one of the files inside somedir does
not cause the recipe to be rebuilt - in fact, no task hashes are
affected; we discovered this because a clean build worked correctly,
while one that uses an sstate mirror would end up with an old version of
those files on the target.

Digging around, it _seems_ that this should be supported, e.g.

commit bb66113bde5361b869dce2bdaece5b938f077ea8
Author: Richard Purdie <richard.purdie@linuxfoundation.org>
Date:   Sun Apr 6 11:08:22 2014 +0100

    bitbake: fetch2: Fix bug in file checksum generation

However, it also seems that something since then has broken the
checksumming of files specified via a glob pattern. At least if I take
the recipe mentioned in that commit and run "bitbake-dumpsig -t
connman-gnome do_fetch", I get

Variable SRC_URI value is
git://github.com/connectivity/connman-gnome.git
file://0001-Removed-icon-from-connman-gnome-about-applet.patch
 file://null_check_for_ipv4_config.patch            file://images/*
      file://connman-gnome-fix-dbus-interface-name.patch
file://0001-Port-to-Gtk3.patch
...
This task depends on the checksums of files:
[('0001-Removed-icon-from-connman-gnome-about-applet.patch',
'4c1b4d89f92949f34d5c232d85398bb4'),
('connman-gnome-fix-dbus-interface-name.patch',
'51f2ebbc91ec35184876dfdf8aec35fd'),
('null_check_for_ipv4_config.patch',
'a23271e41c9fe81551244d875106af10'), ('0001-Port-to-Gtk3.patch',
'fa8ffcd77c330fd5063c7a7c62dd7c69')]

i.e., none of the files in images/ are mentioned, contrary to what was
apparently the case back in 2014.

Rasmus