'make distclean' should not call 'waf clean'
'make distclean' should not call 'waf clean'

Because if configure hasn't been run, then an error is reported.

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,isaacs/nshtools,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node