I apologize in advance because I'm a c++ novice, but I was hoping you could help me understand what '.depend' is in the make file. When I try running make, I get the following problem:

Also, when I try running ./c4solver, what kind of command line arguments are expected? Are board positions that I want to be evaluated supposed to be in '7x6.book' or are they entered directly into the command line? Can you please give an example of what '7x6.book' should look like or what the command line arguments should look like?
Thank you!
I apologize in advance because I'm a c++ novice, but I was hoping you could help me understand what '.depend' is in the make file. When I try running make, I get the following problem:

Also, when I try running ./c4solver, what kind of command line arguments are expected? Are board positions that I want to be evaluated supposed to be in '7x6.book' or are they entered directly into the command line? Can you please give an example of what '7x6.book' should look like or what the command line arguments should look like?
Thank you!