-include ../tools.mk all: # Let's get a nice error message $(BARE_RUSTC) foo.rs --emit dep-info --out-dir foo/bar/baz 2>&1 | \ grep "error writing dependencies" # Make sure the filename shows up $(BARE_RUSTC) foo.rs --emit dep-info --out-dir foo/bar/baz 2>&1 | grep "baz"