-include ../tools.mk all: mkdir $(TMPDIR)/a mkdir $(TMPDIR)/b $(CC) -c -o $(TMPDIR)/a/foo.o foo.c $(CC) -c -o $(TMPDIR)/b/foo.o bar.c ar crus $(TMPDIR)/libfoo.a $(TMPDIR)/a/foo.o $(TMPDIR)/b/foo.o $(RUSTC) foo.rs $(RUSTC) bar.rs $(call RUN,bar)