bitbake: siggen: ensure nostamp tasks force dependent tasks to re-execute

If a nostamp task is depended on by a non-nostamp task, then we want the
signature of that task to change such that it re-executes afterwards.
This is an unusual situation, but we want this to work in OE in
externalsrc.bbclass so that compilation happens every time it is
requested.

(Bitbake rev: 73498afc3d45beede5b8f24a9acd523a1663b793)

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

1 files changed, 6 insertions, 0 deletions

diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 5103073539..0c77d72112 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -187,6 +187,12 @@ class SignatureGeneratorBasic(SignatureGenerator):
                 self.file_checksum_values[k][f] = cs
                 data = data + cs
 
+        taskdep = dataCache.task_deps[fn]
+        if 'nostamp' in taskdep and task in taskdep['nostamp']:
+            # Nostamp tasks need an implicit taint so that they force any dependent tasks to run
+            import uuid
+            data = data + str(uuid.uuid4())
+
         taint = self.read_taint(fn, task, dataCache.stamp[fn])
         if taint:
             data = data + taint