Sometimes this file will have quotation marks when handling it from cmake.
https://github.com/Dav1dde/glad/blob/f49229523c58ad7698e941f7c51454e77dd9d6a8/glad/__main__.py#L161

Could you add a warning that if paths start and end with " it's probably bad (global_config['OUT_PATH']), python will try to insert an absolute path as it.
`/abs/path/"/abs/path/build"` as path, which is nonsense. Thank you.