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rustc: add --print target-spec option

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This option provides the user the ability to dump the configuration that
is in use by rustc for the target they are building for.

Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
This commit is contained in:
Doug Goldstein 2016-04-07 16:36:35 -05:00
parent 8285ab5c99
commit ff112644de
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GPG key ID: A2BC03DC87ED1BD4
2 changed files with 9 additions and 0 deletions
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6
src/librustc/session/config.rs
View file

@ -308,6 +308,7 @@ pub enum PrintRequest {
TargetFeatures,
RelocationModels,
CodeModels,
TargetSpec,
}
pub enum Input {
@ -1141,6 +1142,9 @@ pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
let mut print_opts = vec!["crate-name", "file-names", "sysroot", "cfg",
"target-list", "target-cpus", "target-features",
"relocation-models", "code-models"];
if nightly_options::is_nightly_build() {
print_opts.push("target-spec-json");
}
vec![
opt::flag_s("h", "help", "Display this message"),
@ -1471,6 +1475,8 @@ pub fn build_session_options_and_crate_config(matches: &getopts::Matches)
"target-features" => PrintRequest::TargetFeatures,
"relocation-models" => PrintRequest::RelocationModels,
"code-models" => PrintRequest::CodeModels,
"target-spec-json" if nightly_options::is_unstable_enabled(matches)
=> PrintRequest::TargetSpec,
req => {
early_error(error_format, &format!("unknown print request `{}`", req))
}

3
src/librustc_driver/lib.rs
View file

@ -80,6 +80,8 @@ use rustc_metadata::locator;
use rustc_metadata::cstore::CStore;
use rustc::util::common::time;
use serialize::json::ToJson;
use std::cmp::max;
use std::cmp::Ordering::Equal;
use std::default::Default;
@ -584,6 +586,7 @@ impl RustcDefaultCalls {
println!("{}", targets.join("\n"));
},
PrintRequest::Sysroot => println!("{}", sess.sysroot().display()),
PrintRequest::TargetSpec => println!("{}", sess.target.target.to_json().pretty()),
PrintRequest::FileNames |
PrintRequest::CrateName => {
let input = match input {