[cfe-dev] AST matchers use

[Siddharth Shankar Swain via cfe-dev]

Hi,
Can we use AST Matchers to find out external functions and variables ? i.e
if we have ASTs of say two different files and we want to find if a
function is used in one file and defined in another can we find it with AST
Matcher? And can we build a CFG after finding the dependencies across
files? Please guide.
Thanks,
Siddharth
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