meson: Move all code generation scripts to utils/codegen/

We have multiple code generation scripts in utils/, mixed with other
miscellaneous utilities, as well as a larger code base based on mojom in
utils/ipc/. To make code sharing easier between the generator scripts,
without creating a mess in the utils/ directory, move all the code
generation code to utils/codegen/.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

utils/codegen/gen-tp-header.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2020, Google Inc.
+#
+# Author: Paul Elder <paul.elder@ideasonboard.com>
+#
+# Generate header file to contain lttng tracepoints
+
+import datetime
+import jinja2
+import pathlib
+import os
+import sys
+
+def main(argv):
+    if len(argv) < 4:
+        print(f'Usage: {argv[0]} include_build_dir output template tp_files...')
+        return 1
+
+    output = argv[2]
+    template = argv[3]
+
+    year = datetime.datetime.now().year
+    path = pathlib.Path(output).absolute().relative_to(argv[1])
+
+    source = ''
+    for fname in argv[4:]:
+        source += open(fname, 'r', encoding='utf-8').read() + '\n\n'
+
+    template = jinja2.Template(open(template, 'r', encoding='utf-8').read())
+    string = template.render(year=year, path=path, source=source)
+
+    f = open(output, 'w', encoding='utf-8').write(string)
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))