Commit dfa7cca5f3b4f494aae785891ab4a42e66db77ef

Werner Lemberg 2021-02-16T14:29:45

* builds/toplevel.mk: Avoid side effects of `shell`. We use a dummy variable to catch its output. Otherwise the `make` program is going to interpret the return value of `shell`; this can cause obscure warning or error messages or even be harmful.