1 files changed, 59 insertions, 0 deletions
diff --git a/pw_build_mcuxpresso/py/pw_build_mcuxpresso/gn.py b/pw_build_mcuxpresso/py/pw_build_mcuxpresso/gn.py
new file mode 100644
index 000000000..202c4f774
--- /dev/null
+++ b/pw_build_mcuxpresso/py/pw_build_mcuxpresso/gn.py
@@ -0,0 +1,59 @@
+# Copyright 2023 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+"""GN output support."""
+
+from typing import Any, List, Optional
+
+import pathlib
+
+try:
+    from pw_build_mcuxpresso.components import Project
+except ImportError:
+    # Load from this directory if pw_build_mcuxpresso is not available.
+    from components import Project  # type: ignore
+
+
+def _gn_list_str_out(name: str, val: List[Any]):
+    """Outputs list of strings in GN format with correct escaping."""
+    list_str = ','.join(
+        '"' + str(x).replace('"', r'\"').replace('$', r'\$') + '"' for x in val
+    )
+    print(f'{name} = [{list_str}]')
+
+
+def _gn_list_path_out(
+    name: str, val: List[pathlib.Path], path_prefix: Optional[str] = None
+):
+    """Outputs list of paths in GN format with common prefix."""
+    if path_prefix is not None:
+        str_val = list(f'{path_prefix}/{str(d)}' for d in val)
+    else:
+        str_val = list(str(d) for d in val)
+    _gn_list_str_out(name, str_val)
+
+
+def gn_output(project: Project, path_prefix: Optional[str] = None):
+    """Output GN scope for a project with the specified components.
+
+    Args:
+        project: MCUXpresso project to output..
+        path_prefix: string prefix to prepend to all paths.
+    """
+    _gn_list_str_out('defines', project.defines)
+    _gn_list_path_out(
+        'include_dirs', project.include_dirs, path_prefix=path_prefix
+    )
+    _gn_list_path_out('public', project.headers, path_prefix=path_prefix)
+    _gn_list_path_out('sources', project.sources, path_prefix=path_prefix)
+    _gn_list_path_out('libs', project.libs, path_prefix=path_prefix)