19 /// A `clang` executable.
21 pub struct Clang {  struct
22     /// The path to this `clang` executable.
24     /// The version of this `clang` executable if it could be parsed.
26     /// The directories searched by this `clang` executable for C headers if
29     /// The directories searched by this `clang` executable for C++ headers if
34 impl Clang {  argument
44     /// Returns a `clang` executable if one can be found.
47     /// `clang` used. Otherwise, a series of directories are searched. First, if
50     /// systems, `xcodebuild -find clang` will next be queried. Last, the
57     /// target-prefixed instance of `clang` (e.g.,
58     /// `x86_64-unknown-linux-gnu-clang` for the above example).
59     pub fn find(path: Option<&Path>, args: &[String]) -> Option<Clang> {  in find()  argument
63                 return Some(Clang::new(p, args));  in find()
76         // Collect the paths to search for a `clang` executable in.  in find()
91             if let Ok((path, _)) = run("xcodebuild", &["-find", "clang"]) {  in find()
102         // First, look for a target-prefixed `clang` executable.  in find()
105             let default = format!("{}-clang{}", target, env::consts::EXE_SUFFIX);  in find()
106             let versioned = format!("{}-clang-[0-9]*{}", target, env::consts::EXE_SUFFIX);  in find()
110                     return Some(Clang::new(path, args));  in find()
115         // Otherwise, look for any other `clang` executable.  in find()
117         let default = format!("clang{}", env::consts::EXE_SUFFIX);  in find()
118         let versioned = format!("clang-[0-9]*{}", env::consts::EXE_SUFFIX);  in find()
122                 return Some(Clang::new(path, args));  in find()
185 /// Runs `clang`, returning the `stdout` and `stderr` output.
206 /// Parses the version from the output of a `clang` executable if possible.
221 /// Parses the search paths from the output of a `clang` executable if possible.