Ocamlbuild_pack.Solvertype backtrace = private | Leaf of Pathname.t | 
| Choice of backtrace list | 
| Depth of Pathname.t * backtrace | 
| Target of string * backtrace | 
exception Failed of backtraceexception Circular of Pathname.t * Pathname.t listval solve : Pathname.t -> unitval solve_target : string -> Pathname.t list -> Pathname.t