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add a --dep-file option #28767

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add a --dep-file option #28767

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6 changes: 5 additions & 1 deletion src/librustc/session/config.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -799,6 +799,8 @@ pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
http://www.sourceware.org/autobook/
for details)",
"TRIPLE"),
opt::opt("", "dep-file", "Write dep-info output to <filename>",
"FILENAME"),
opt::multi("W", "warn", "Set lint warnings", "OPT"),
opt::multi("A", "allow", "Set lint allowed", "OPT"),
opt::multi("D", "deny", "Set lint denied", "OPT"),
Expand Down Expand Up @@ -1004,7 +1006,9 @@ pub fn build_session_options(matches: &getopts::Matches) -> Options {

let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
let test = matches.opt_present("test");
let write_dependency_info = (output_types.contains(&OutputTypeDepInfo), None);
let dependency_info_file = matches.opt_str("dep-file").map(|f| { PathBuf::from(&f) });
let write_dependency_info = (output_types.contains(&OutputTypeDepInfo),
dependency_info_file);

let prints = matches.opt_strs("print").into_iter().map(|s| {
match &*s {
Expand Down