Having g++ dump metadata during compilations

I'm trying to find a way to extract all the function
definitions AND
function uses from thousands of C++ files. For example, if
foo.cpp
contains:


int func(char b)
{
    return 0;
}

func('d'); func('e');
print("bar");


Then I want to get something that tells me "int
func(char b) is on
line 1, pos 0 ; func(char) is on line 5, pos 0 ; func(char)
is on line
5, pos 11 ; print(char*) is on line 6, pos 0"

Is this something g++ can do? I've looked into ctags as
well, but it
can only get the function definitions.

Thanks in advance!

- Eliss
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