Add fixmes

Author: bjorn3

build_system/main.rs

@@ -185,6 +185,7 @@ fn main() {
     env::set_var("RUSTDOC", "rustdoc_should_be_set_explicitly");
 
     let cg_clif_dylib = if use_existing_backend {
+        // FIXME also allow using llvm for comparison purposes
         CodegenBackend::Builtin("cranelift".to_owned())
     } else {
         CodegenBackend::Local(build_backend::build_backend(

build_system/rustc_info.rs

@@ -82,6 +82,7 @@ pub(crate) fn get_default_sysroot(rustc: &Path) -> PathBuf {
     Path::new(String::from_utf8(default_sysroot).unwrap().trim()).to_owned()
 }
 
+// FIXME call once for each target and pass result around in struct
 pub(crate) fn get_file_name(rustc: &Path, crate_name: &str, crate_type: &str) -> String {
     let file_name = Command::new(rustc)
         .stderr(Stdio::inherit())