Import of the watch repository from Pebble

waftools/c_preprocessor.py

@@ -0,0 +1,33 @@
+# Copyright 2024 Google LLC
+#
+# 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
+#
+#     http://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.
+
+"""
+Tool that invokes the C preprocessor with any type of file.
+"""
+
+
+# FIXME: convert this from a rule to a task
+def c_preproc(task):
+    args = {
+        'CC': task.generator.env.CC[0],
+        'CFLAGS': ' '.join(task.generator.cflags),
+        'SRC': task.inputs[0].abspath(),
+        'TGT': task.outputs[0].abspath(),
+    }
+    return task.exec_command(
+        '{CC} -E -P -c {CFLAGS} "{SRC}" -o "{TGT}"'.format(**args))
+
+
+def configure(ctx):
+    pass