all:
@echo "With Python 2:"
- @make -e PYTHON=python2 regress
+ @$(MAKE) -e PYTHON=python2 regress
@echo "With Python 3:"
- @make -e PYTHON=python3 regress
+ @$(MAKE) -e PYTHON=python3 regress
@echo "No diff output is good news."
.SUFFIXES: .log .chk