How about a tool to "exclude what you don't use"? I have several personal hacks for doing this I have written over the years but I've yet to find anyone else w

How about a tool to "exclude what you don't use"? I have several personal hacks for doing this I have written over the years but I've yet to find anyone else who tried to automate it. For example, one task is to determine the functions in a library that are not actually used in your program and exclude those from linking, instead of blindly linking libraries full of unused functions (that sometimes cause name conflicts).