Fix pkgutils builds

cook.sh

@@ -200,7 +200,7 @@ function op {
             echo "target = \"$TARGET\"" >> "stage.toml"
             mkdir -p stage/pkg
             cp -v stage.toml "stage/pkg/$1.toml"
-            cargo run --release --manifest-path "$ROOT/pkgutils/Cargo.toml" --bin pkg -- create stage
+            CC=cc cargo run --release --manifest-path "$ROOT/pkgutils/Cargo.toml" --bin pkg -- create stage
             ;;
         untar)
             rm -rfv stage.tar stage.sig stage.toml