Add support for recovering rustc codegen options

Author: Shnatsel

cargo-auditable/Cargo.toml

@@ -18,7 +18,7 @@ auditable-serde = {version = "0.8.0", path = "../auditable-serde"}
 miniz_oxide = {version = "0.8.0"}
 serde_json = "1.0.57"
 cargo_metadata = "0.18"
-pico-args = { version = "0.5", features = ["eq-separator"] }
+pico-args = { version = "0.5", features = ["eq-separator", "short-space-opt"] }
 serde = "1.0.147"
 wasm-gen = "0.1.4"
 

cargo-auditable/src/rustc_arguments.rs

@@ -21,6 +21,7 @@ pub struct RustcArgs {
     pub out_dir: Option<PathBuf>,
     pub target: Option<String>,
     pub print: Vec<String>,
+    pub codegen: Vec<String>,
 }
 
 impl RustcArgs {
@@ -62,6 +63,7 @@ impl RustcArgs {
                 })?,
             target: parser.opt_value_from_str("--target")?,
             print: parser.values_from_str("--print")?,
+            codegen: parser.values_from_str("-C")?,
         })
     }
 }
@@ -168,4 +170,23 @@ mod tests {
 
         assert_eq!(args.emit, expected)
     }
+
+    #[test]
+    fn multiple_codegen_options() {
+        let raw_rustc_args = vec![
+            "-Clinker=clang",
+            "-C",
+            "link-arg=-fuse-ld=/usr/bin/mold",
+        ];
+        let raw_rustc_args: Vec<OsString> = raw_rustc_args.into_iter().map(|s| s.into()).collect();
+        let mut args = RustcArgs::from_vec(raw_rustc_args).unwrap();
+
+        let expected = vec!["linker=clang", "link-arg=-fuse-ld=/usr/bin/mold"];
+        let mut expected: Vec<String> = expected.into_iter().map(|s| s.into()).collect();
+
+        args.codegen.sort();
+        expected.sort();
+
+        assert_eq!(args.codegen, expected)
+    }
 }