Remove --target option

build_system/src/build.rs

@@ -43,22 +43,6 @@ impl BuildArg {
                     Self::usage();
                     return Ok(None);
                 }
-                "--target-triple" => {
-                    if args.next().is_some() {
-                        // Handled in config.rs.
-                    } else {
-                        return Err(
-                            "Expected a value after `--target-triple`, found nothing".to_string()
-                        );
-                    }
-                }
-                "--target" => {
-                    if args.next().is_some() {
-                        // Handled in config.rs.
-                    } else {
-                        return Err("Expected a value after `--target`, found nothing".to_string());
-                    }
-                }
                 arg => {
                     if !build_arg.config_info.parse_argument(arg, &mut args)? {
                         return Err(format!("Unknown argument `{}`", arg));
@@ -152,7 +136,7 @@ fn build_sysroot_inner(
                 &"cargo",
                 &"build",
                 &"--target",
-                &config.target,
+                &config.target_triple,
                 &"--release",
             ],
             Some(start_dir),
@@ -160,13 +144,10 @@ fn build_sysroot_inner(
         )?;
         "release"
     } else {
-        env.insert(
+        env.insert("RUSTFLAGS".to_string(), rustflags);
-            "RUSTFLAGS".to_string(),
-            rustflags,
-        );
 
         run_command_with_output_and_env(
-            &[&"cargo", &"build", &"--target", &config.target],
+            &[&"cargo", &"build", &"--target", &config.target_triple],
             Some(start_dir),
             Some(&env),
         )?;

build_system/src/config.rs

@@ -4,7 +4,6 @@ use std::env as std_env;
 
 #[derive(Default)]
 pub struct ConfigInfo {
-    pub target: String,
     pub target_triple: String,
     pub host_triple: String,
     pub rustc_command: Vec<String>,
@@ -31,10 +30,6 @@ impl ConfigInfo {
                     )
                 }
             },
-            "--target" => match args.next() {
-                Some(arg) if !arg.is_empty() => self.target = arg.to_string(),
-                _ => return Err("Expected a value after `--target`, found nothing".to_string()),
-            },
             "--out-dir" => match args.next() {
                 Some(arg) if !arg.is_empty() => {
                     // env.insert("CARGO_TARGET_DIR".to_string(), arg.to_string());
@@ -83,12 +78,6 @@ impl ConfigInfo {
         };
         self.host_triple = rustc_version_info(Some(&rustc))?.host.unwrap_or_default();
 
-        if !self.target_triple.is_empty() && self.target.is_empty() {
-            self.target = self.target_triple.clone();
-        }
-        if self.target.is_empty() {
-            self.target = self.host_triple.clone();
-        }
         if self.target_triple.is_empty() {
             self.target_triple = self.host_triple.clone();
         }
@@ -223,7 +212,6 @@ impl ConfigInfo {
     pub fn show_usage() {
         println!(
             "\
-    --target [arg]         : Set the target to [arg]
     --target-triple [arg]  : Set the target triple to [arg]
     --out-dir              : Location where the files will be generated
     --release-sysroot      : Build sysroot in release mode

build_system/src/test.rs

@@ -750,7 +750,10 @@ fn extended_regex_example_tests(env: &Env, args: &TestArg) -> Result<(), String>
     println!("[TEST] rust-lang/regex example shootout-regex-dna");
     let mut env = env.clone();
     // newer aho_corasick versions throw a deprecation warning
-    let rustflags = format!("{} --cap-lints warn", env.get("RUSTFLAGS").cloned().unwrap_or_default());
+    let rustflags = format!(
+        "{} --cap-lints warn",
+        env.get("RUSTFLAGS").cloned().unwrap_or_default()
+    );
     env.insert("RUSTFLAGS".to_string(), rustflags);
     // Make sure `[codegen mono items] start` doesn't poison the diff
     run_cargo_command(
@@ -799,7 +802,10 @@ fn extended_regex_tests(env: &Env, args: &TestArg) -> Result<(), String> {
     println!("[TEST] rust-lang/regex tests");
     let mut env = env.clone();
     // newer aho_corasick versions throw a deprecation warning
-    let rustflags = format!("{} --cap-lints warn", env.get("RUSTFLAGS").cloned().unwrap_or_default());
+    let rustflags = format!(
+        "{} --cap-lints warn",
+        env.get("RUSTFLAGS").cloned().unwrap_or_default()
+    );
     env.insert("RUSTFLAGS".to_string(), rustflags);
     run_cargo_command(
         &[