build: introduce declarative non-recursive build graph

1 files changed, 26 insertions, 0 deletions

diff --git a/scripts/build/write-compdb.py b/scripts/build/write-compdb.py
new file mode 100755
index 0000000..9ec5a49
--- /dev/null
+++ b/scripts/build/write-compdb.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+import json
+import pathlib
+import sys
+
+source = pathlib.Path(sys.argv[1])
+output = pathlib.Path(sys.argv[2])
+directory = pathlib.Path.cwd()
+entries = []
+for line in source.read_text().splitlines():
+    file_name, object_name, command = line.split("\t", 2)
+    entries.append(
+        {
+            "directory": str(directory),
+            "file": file_name,
+            "output": object_name,
+            "command": command,
+        }
+    )
+output.parent.mkdir(parents=True, exist_ok=True)
+temporary = output.with_suffix(output.suffix + ".tmp")
+temporary.write_text(json.dumps(entries, indent=2) + "\n")
+temporary.replace(output)
+