classes/externalsrc: ensure cleandirs code handles non-absolute paths

It's possible that a trailing or extra slash somewhere in the external
source path could result in the directory not being removed from
cleandirs; it's also possible that a cleandirs entry is somewhere
underneath the source tree and that tree should never have parts of it
deleted by the build system. Use oe.path.is_path_parent() (which makes
paths absolute before checking them) to find out if any path in
cleandirs is anywhere underneath the external source path, and drop it
if it is.

(From OE-Core rev: 87ec0fb470274d980f8553a85f778809c269c5d7)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index ce8517c58b..c9f5cf767d 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -54,6 +54,7 @@ python () {
 
     if externalsrc:
         import oe.recipeutils
+        import oe.path
 
         d.setVar('S', externalsrc)
         if externalsrcbuild:
@@ -90,7 +91,7 @@ python () {
             cleandirs = oe.recipeutils.split_var_value(d.getVarFlag(task, 'cleandirs', False) or '')
             setvalue = False
             for cleandir in cleandirs[:]:
-                if d.expand(cleandir) == externalsrc:
+                if oe.path.is_path_parent(externalsrc, d.expand(cleandir)):
                     cleandirs.remove(cleandir)
                     setvalue = True
             if setvalue: