[PATCH] lib/oe/patch: use author date as commit date for "git am"

["'Cedric Hombourger' via isar-users" <isar-users@googlegroups.com>]

By default, "git am" uses the time of commit creation as the committer
date and is therefore "unique" to each build.

Use the --committer-date-is-author-date option for git to use the author
date as the committer date to get deterministic meta-data and therefore
commit hashes (which may end-up in sources or build in the form of e.g.
localversion file).

Cc: isar-users@googlegroups.com
Signed-off-by: Cedric Hombourger <cedric.hombourger@siemens.com>
---
 meta/lib/oe/patch.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oe/patch.py b/meta/lib/oe/patch.py
index 77b166cfa3..246fc6221f 100644
--- a/meta/lib/oe/patch.py
+++ b/meta/lib/oe/patch.py
@@ -626,7 +626,8 @@ class GitApplyTree(PatchTree):
             try:
                 shellcmd = [patchfilevar, "git", "--work-tree=%s" % reporoot]
                 self.gitCommandUserOptions(shellcmd, self.commituser, self.commitemail)
-                shellcmd += ["am", "-3", "--keep-cr", "--no-scissors", "-p%s" % patch['strippath']]
+                shellcmd += ["am", "--committer-date-is-author-date",
+                             "-3", "--keep-cr", "--no-scissors", "-p%s" % patch['strippath']]
                 return _applypatchhelper(shellcmd, patch, force, reverse, run)
             except CmdError:
                 # Need to abort the git am, or we'll still be within it at the end
-- 
2.47.3

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