- test -f perl-piped/Makefile && cd perl-piped && $(MAKE) clean || rm Makefile || true
- test -f perl-shared/Makefile && cd perl-shared && $(MAKE) clean || rm Makefile || true
+ test -f perl-piped/Makefile && cd perl-piped && $(MAKE) clean || true
+ test -f perl-piped/Makefile && rm perl-piped/Makefile || true
+ test -f perl-shared/Makefile && cd perl-shared && $(MAKE) clean || true
+ test -f perl-shared/Makefile && rm -f perl-shared/Makefile || true
+ test -f ruby/Makefile && cd ruby && $(MAKE) clean && rm Makefile || true