90 pub struct Build {  struct
91     include_directories: Vec<PathBuf>,
92     definitions: Vec<(String, Option<String>)>,
93     objects: Vec<PathBuf>,
94     flags: Vec<String>,
95     flags_supported: Vec<String>,
96     known_flag_support_status: Arc<Mutex<HashMap<String, bool>>>,
97     ar_flags: Vec<String>,
98     no_default_flags: bool,
99     files: Vec<PathBuf>,
100     cpp: bool,
101     cpp_link_stdlib: Option<Option<String>>,
102     cpp_set_stdlib: Option<String>,
103     cuda: bool,
104     target: Option<String>,
105     host: Option<String>,
106     out_dir: Option<PathBuf>,
107     opt_level: Option<String>,
108     debug: Option<bool>,
109     force_frame_pointer: Option<bool>,
110     env: Vec<(OsString, OsString)>,
111     compiler: Option<PathBuf>,
112     archiver: Option<PathBuf>,
113     cargo_metadata: bool,
114     pic: Option<bool>,
115     use_plt: Option<bool>,
116     static_crt: Option<bool>,
117     shared_flag: Option<bool>,
118     static_flag: Option<bool>,
119     warnings_into_errors: bool,
120     warnings: Option<bool>,
121     extra_warnings: Option<bool>,
122     env_cache: Arc<Mutex<HashMap<String, Option<String>>>>,
123     apple_sdk_root_cache: Arc<Mutex<HashMap<String, OsString>>>,
276 impl Build {  implementation
335     pub fn include<P: AsRef<Path>>(&mut self, dir: P) -> &mut Build {  in include()
380     pub fn define<'a, V: Into<Option<&'a str>>>(&mut self, var: &str, val: V) -> &mut Build {  in define()
387     pub fn object<P: AsRef<Path>>(&mut self, obj: P) -> &mut Build {  in object()
402     pub fn flag(&mut self, flag: &str) -> &mut Build {  in flag()  method
419     pub fn ar_flag(&mut self, flag: &str) -> &mut Build {  in ar_flag()
520     pub fn flag_if_supported(&mut self, flag: &str) -> &mut Build {  in flag_if_supported()
538     pub fn shared_flag(&mut self, shared_flag: bool) -> &mut Build {  in shared_flag()  method
557     pub fn static_flag(&mut self, static_flag: bool) -> &mut Build {  in static_flag()  method
568     pub fn no_default_flags(&mut self, no_default_flags: bool) -> &mut Build {  in no_default_flags()  method
574     pub fn file<P: AsRef<Path>>(&mut self, p: P) -> &mut Build {  in file()
595     pub fn cpp(&mut self, cpp: bool) -> &mut Build {  in cpp()  method
608     pub fn cuda(&mut self, cuda: bool) -> &mut Build {  in cuda()  method
635     pub fn warnings_into_errors(&mut self, warnings_into_errors: bool) -> &mut Build {  in warnings_into_errors()  method
656     pub fn warnings(&mut self, warnings: bool) -> &mut Build {  in warnings()  method
679     pub fn extra_warnings(&mut self, warnings: bool) -> &mut Build {  in extra_warnings()
715     ) -> &mut Build {  in cpp_link_stdlib()
756     ) -> &mut Build {  in cpp_set_stdlib()
776     pub fn target(&mut self, target: &str) -> &mut Build {  in target()  method
794     pub fn host(&mut self, host: &str) -> &mut Build {  in host()  method
803     pub fn opt_level(&mut self, opt_level: u32) -> &mut Build {  in opt_level()  method
812     pub fn opt_level_str(&mut self, opt_level: &str) -> &mut Build {  in opt_level_str()
822     pub fn debug(&mut self, debug: bool) -> &mut Build {  in debug()  method
833     pub fn force_frame_pointer(&mut self, force: bool) -> &mut Build {  in force_frame_pointer()
843     pub fn out_dir<P: AsRef<Path>>(&mut self, out_dir: P) -> &mut Build {  in out_dir()  method
853     pub fn compiler<P: AsRef<Path>>(&mut self, compiler: P) -> &mut Build {  in compiler()  method
863     pub fn archiver<P: AsRef<Path>>(&mut self, archiver: P) -> &mut Build {  in archiver()  method
877     pub fn cargo_metadata(&mut self, cargo_metadata: bool) -> &mut Build {  in cargo_metadata()  method
886     pub fn pic(&mut self, pic: bool) -> &mut Build {  in pic()  method
901     pub fn use_plt(&mut self, use_plt: bool) -> &mut Build {  in use_plt()  method
909     pub fn static_crt(&mut self, static_crt: bool) -> &mut Build {  in static_crt()  method
2631 impl Default for Build {  implementation