Background: When I try to google search something like "gcc -Wall" (for example,) to find documentation on the -Wall flag's meaning for GCC, it looks like I get the same search results as if I just searched "gcc": None of the results seem to include the text "-Wall" in them.
Why doesn't a search query with search terms starting with dashes seem to work as I intend (return results containing matches of the terms that starts with a dash), and how can I properly query for terms that start with a dash?
Note: Related, but not a duplicate (because it is more general, and the answer is binary-different as a result): How do I escape Google functional characters?.