image-buildinfo.bbclass: new class, writes build information to image

Writes build information to target filesystem on /etc/build such as enabled
layers, their current status and commit.

squashspaces was moved to oe/utils.py to make it available to different classes
and avoid code duplication.

[YOCTO #6770]

(From OE-Core rev: c9cc652e88ddedddf8a2f23fb9b8c024616526d7)

Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index 35442568e2..1f84ba4b25 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -180,3 +180,7 @@ def multiprocess_exec(commands, function):
         pool.terminate()
         pool.join()
         raise
+
+def squashspaces(string):
+    import re
+    return re.sub("\s+", " ", string).strip()