oeqa/sstatetests: Add NATIVELSB sstate signature equivalence test

The sstate checksums should be independent of whichever NATIVELSBSTRING is
detected. Add an automated QA test which tests this using bitbake -S.

To make this possible, we need to be able to override the value of
NATIVELSBSTRING so make a small change to allow this.

(From OE-Core rev: 2da156d491caf25dfa3efd567d6dbb451dd7e9dc)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 56fe5f2122..fe803f1836 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -210,7 +210,8 @@ addhandler base_eventhandler
 base_eventhandler[eventmask] = "bb.event.ConfigParsed bb.event.BuildStarted bb.event.RecipePreFinalise"
 python base_eventhandler() {
     if isinstance(e, bb.event.ConfigParsed):
-        e.data.setVar("NATIVELSBSTRING", lsb_distro_identifier(e.data))
+        if not e.data.getVar("NATIVELSBSTRING", False):
+            e.data.setVar("NATIVELSBSTRING", lsb_distro_identifier(e.data))
         e.data.setVar('BB_VERSION', bb.__version__)
         pkgarch_mapping(e.data)
         oe.utils.features_backfill("DISTRO_FEATURES", e.data)