lib/oe/package: add LOCALE_PATHS to add define all locations for locales

Some packages may contain localized files not located in default path
${datadir}/locale. Add the new variable LOCALE_PATHS to allow a recipe
to define extra paths or even fully override the scanned directories.
LOCALE_PATHS is set at ${datadir}/locale by default to keep the exact
same behavior for the recipes which did not need modification.

(From OE-Core rev: 0ffc7cf01225743789ac30dd325fca05b9203be1)

Signed-off-by: Jonathan GUILLOT <jonathan@joggee.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/package.py

@@ -639,11 +639,6 @@ def split_locales(d):
 
     packages = (d.getVar('PACKAGES') or "").split()
 
-    datadir = d.getVar('datadir')
-    if not datadir:
-        bb.note("datadir not defined")
-        return
-
     dvar = d.getVar('PKGD')
     pn = d.getVar('LOCALEBASEPN')
 
@@ -653,14 +648,20 @@ def split_locales(d):
     except ValueError:
         locale_index = len(packages)
 
-    localedir = os.path.join(dvar + datadir, 'locale')
+    localepaths = []
+    locales = set()
+    for localepath in (d.getVar('LOCALE_PATHS') or "").split():
+        localedir = dvar + localepath
+        if cpath.isdir(localedir):
+            locales.update(os.listdir(localedir))
+            localepaths.append(localepath)
+        else:
+            bb.debug(1, "No locale files in %s" % localepath)
 
-    if not cpath.isdir(localedir):
+    if len(locales) == 0:
         bb.debug(1, "No locale files in this package")
         return
 
-    locales = os.listdir(localedir)
-
     summary = d.getVar('SUMMARY') or pn
     description = d.getVar('DESCRIPTION') or ""
     locale_section = d.getVar('LOCALE_SECTION')
@@ -670,7 +671,10 @@ def split_locales(d):
         pkg = pn + '-locale-' + ln
         packages.insert(locale_index, pkg)
         locale_index += 1
-        d.setVar('FILES:' + pkg, os.path.join(datadir, 'locale', l))
+        files = []
+        for localepath in localepaths:
+            files.append(os.path.join(localepath, l))
+        d.setVar('FILES:' + pkg, " ".join(files))
         d.setVar('RRECOMMENDS:' + pkg, '%svirtual-locale-%s' % (mlprefix, ln))
         d.setVar('RPROVIDES:' + pkg, '%s-locale %s%s-translation' % (pn, mlprefix, ln))
         d.setVar('SUMMARY:' + pkg, '%s - %s translations' % (summary, l))