build: preserve correct mode when generating files via jinja2

When using "capture : true" in custom_target()s the mode of the source
file is not preserved when the generated file is not installed and so
needs to be tweaked manually. Switch from output capture to creating the
target file and copy the permissions from the input file.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/tools/meson-render-jinja2.py b/tools/meson-render-jinja2.py
index 9a6fc7c31c..0f9fc43124 100755
--- a/tools/meson-render-jinja2.py
+++ b/tools/meson-render-jinja2.py
@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 import ast
+import os
 import re
 import sys
 
@@ -27,4 +28,8 @@ def render(filename, defines):
 
 if __name__ == '__main__':
     defines = parse_config_h(sys.argv[1])
-    print(render(sys.argv[2], defines))
+    output = render(sys.argv[2], defines)
+    with open(sys.argv[3], 'w') as f:
+        f.write(output)
+    info = os.stat(sys.argv[2])
+    os.chmod(sys.argv[3], info.st_mode)