1 files changed, 28 insertions, 1 deletions
diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py
index 082972457b..5d21cdcbdf 100644
--- a/meta/lib/oe/path.py
+++ b/meta/lib/oe/path.py
@@ -1,4 +1,6 @@
 #
+# Copyright OpenEmbedded Contributors
+#
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
@@ -123,7 +125,8 @@ def copyhardlinktree(src, dst):
         if os.path.isdir(src):
             if len(glob.glob('%s/.??*' % src)) > 0:
                 source = './.??* '
-            source += './*'
+            if len(glob.glob('%s/**' % src)) > 0:
+                source += './*'
             s_dir = src
         else:
             source = src
@@ -169,6 +172,9 @@ def symlink(source, destination, force=False):
         if e.errno != errno.EEXIST or os.readlink(destination) != source:
             raise
 
+def relsymlink(target, name, force=False):
+    symlink(os.path.relpath(target, os.path.dirname(name)), name, force=force)
+
 def find(dir, **walkoptions):
     """ Given a directory, recurses into that directory,
     returning all files as absolute paths. """
@@ -320,3 +326,24 @@ def which_wild(pathname, path=None, mode=os.F_OK, *, reverse=False, candidates=F
 
     return files
 
+def canonicalize(paths, sep=','):
+    """Given a string with paths (separated by commas by default), expand
+    each path using os.path.realpath() and return the resulting paths as a
+    string (separated using the same separator a the original string).
+    """
+    # Ignore paths containing "$" as they are assumed to be unexpanded bitbake
+    # variables. Normally they would be ignored, e.g., when passing the paths
+    # through the shell they would expand to empty strings. However, when they
+    # are passed through os.path.realpath(), it will cause them to be prefixed
+    # with the absolute path to the current directory and thus not be empty
+    # anymore.
+    #
+    # Also maintain trailing slashes, as the paths may actually be used as
+    # prefixes in sting compares later on, where the slashes then are important.
+    canonical_paths = []
+    for path in (paths or '').split(sep):
+        if '$' not in path:
+            trailing_slash = path.endswith('/') and '/' or ''
+            canonical_paths.append(os.path.realpath(path) + trailing_slash)
+
+    return sep.join(canonical_paths)