rootfs-postcommands.bbclass: Prevent linking testdata to itself

testdata and testdata_link may point to the same file, in particular
when IMAGE_LINK_NAME and IMAGE_NAME are equal.

Check if this is the case before creating a symlink that points to
itself and makes the next build fail.

(From OE-Core rev: b516394f9e7858062aa7b042aa4a1bdef9d3a941)

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass
index 78f7c55933..c92df7b0de 100644
--- a/meta/classes/rootfs-postcommands.bbclass
+++ b/meta/classes/rootfs-postcommands.bbclass
@@ -300,7 +300,8 @@ python write_image_test_data() {
     searchString = "%s/"%(d.getVar("TOPDIR")).replace("//","/")
     export2json(d, testdata,searchString=searchString,replaceString="")
 
-    if os.path.lexists(testdata_link):
-       os.remove(testdata_link)
-    os.symlink(os.path.basename(testdata), testdata_link)
+    if testdata_link != testdata:
+        if os.path.lexists(testdata_link):
+           os.remove(testdata_link)
+        os.symlink(os.path.basename(testdata), testdata_link)
 }