zephyr: Add find_projects() to zmake.project.

A new generator function which searches subdirectories for zmake
projects.

BUG=b:183007888
TEST=zmake testall
BRANCH=none

Signed-off-by: Jeremy Bettis <jbettis@google.com>
Change-Id: Iceca946a12e0e64a46c5994366734addb3e24cb2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2795931
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Tested-by: Jack Rosenthal <jrosenth@chromium.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/zephyr/zmake/zmake/project.py b/zephyr/zmake/zmake/project.py
index a7e2fec20e..f7e085cb1e 100644
--- a/zephyr/zmake/zmake/project.py
+++ b/zephyr/zmake/zmake/project.py
@@ -3,7 +3,10 @@
 # found in the LICENSE file.
 """Module for project config wrapper object."""
 
+import logging
+import pathlib
 import warnings
+
 import yaml
 
 # The version of jsonschema in the chroot has a bunch of
@@ -33,6 +36,20 @@ def module_dts_overlay_name(modpath, board_name):
         board_name)
 
 
+def find_projects(root_dir):
+    """Finds all zmake projects in root_dir.
+
+    Args:
+        root_dir: the root dir as a pathlib.Path object
+
+    Yields:
+        Project: The next project found.
+    """
+    logging.info('Finding zmake targets under \'%s\'.', root_dir)
+    for path in pathlib.Path(root_dir).rglob('zmake.yaml'):
+        yield Project(path.parent)
+
+
 class ProjectConfig:
     """An object wrapping zmake.yaml."""
     validator = jsonschema.Draft7Validator