Output an appropriate warning when a cross info file does not exist. #2021
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If making a typo, it used to output:
To show how confusing the old error was, I created the issue #2020 because I was just sure something was wrong with my file, while in fact meson was simply not reading my file because I had a typo in the command line (hyphen mistyped into underscore). It took me several dozens of minutes of searching the web for syntax issues, then even looking at meson code until I discovered the boring truth!
A "File not found" error will be far more obvious.