build(core): do not link gen_context.o to trezor_lib

core/embed/rust/build.rs

@@ -190,8 +190,9 @@ fn link_core_objects() {
     let crate_path = env::var("CARGO_MANIFEST_DIR").unwrap();
     let build_path = format!("{}/../../build/unix", crate_path);
 
-    // List of object filenames to ignore in the `embed` directory.
+    // List of object filenames to ignore in the `embed` and `vendor` directory
     let embed_blocklist = [OsStr::new("main_main.o")];
+    let vendor_blocklist = [OsStr::new("gen_context.o")];
 
     // Collect all objects that the `core` library uses, and link it in. We have to
     // make sure to avoid the object with the `_main` symbol, so we don't get any
@@ -205,8 +206,14 @@ fn link_core_objects() {
             cc.object(obj);
         }
     }
+
     for obj in glob::glob(&format!("{}/vendor/**/*.o", build_path)).unwrap() {
-        cc.object(obj.unwrap());
+        let obj = obj.unwrap();
+        if vendor_blocklist.contains(&obj.file_name().unwrap()) {
+            // Ignore.
+        } else {
+            cc.object(obj);
+        }
     }
 
     // Compile all the objects into a static library and link it in automatically.