update-alternatives: try to update FILES_${PN} when renaming a file

When using update-alternatives, FILES_${PN} must be
referencing the new name after update-alternatives has
renamed files.

This is more or less OK when having static lists of files to
be packaged into a package, but makes it quite hard to
dynamically generate FILES_${PN}, e.g. using do_split_packages(),
as in that case we can not easily modify what goes into
FILES_${PN}, because that list is based on filenames as seen
at the time do_split_packages() is executing.

Of couse one could explicitly specify the (renamed) file(s)
in the recipe, but that contradicts the intended usage of
do_split_packages().

Instead, if FILES_${PN} contains the file name as it was pre
renaming, we here modify this to reflect the new name.

This will allow usage of do_split_packages() to populate
FILES_${PN}.

[YOCTO #13058]

(From OE-Core rev: 5c23fe378732038643a450cbf916334d24764b70)

Signed-off-by: André Draszik <andre.draszik@jci.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/update-alternatives.bbclass

@@ -138,6 +138,14 @@ python apply_update_alternative_renames () {
     if not update_alternatives_enabled(d):
        return
 
+    from re import sub
+
+    def update_files(alt_target, alt_target_rename, pkg, d):
+        f = d.getVar('FILES_' + pkg)
+        if f:
+            f = sub(r'(^|\s)%s(\s|$)' % alt_target, r'\1%s\2' % alt_target_rename, f)
+            d.setVar('FILES_' + pkg, f)
+
     # Check for deprecated usage...
     pn = d.getVar('BPN')
     if d.getVar('ALTERNATIVE_LINKS') != None:
@@ -177,6 +185,7 @@ python apply_update_alternative_renames () {
                     else:
                         bb.note('%s: Rename %s -> %s' % (pn, alt_target, alt_target_rename))
                         os.rename(src, dest)
+                        update_files(alt_target, alt_target_rename, pkg, d)
                 else:
                     bb.warn("%s: alternative target (%s or %s) does not exist, skipping..." % (pn, alt_target, alt_target_rename))
                     continue
@@ -203,6 +212,8 @@ python apply_update_alternative_renames () {
                     os.unlink(src)
                 else:
                     bb.warn('%s: Unable to resolve dangling symlink: %s' % (pn, alt_target))
+                    continue
+            update_files(alt_target, alt_target_rename, pkg, d)
 }
 
 PACKAGESPLITFUNCS_prepend = "populate_packages_updatealternatives "