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      1 # $NetBSD: suff-add-later.mk,v 1.2 2020/10/21 08:18:24 rillig Exp $
      2 #
      3 # https://gnats.netbsd.org/49086, issue 5:
      4 # Adding more suffixes does not turn existing rules into suffix rules.
      5 
      6 .MAKEFLAGS: -ds
      7 
      8 all: issue5a.d issue5b.c issue5c issue5d.e issue5e.d
      9 
     10 .SUFFIXES: .c
     11 
     12 # At this point, only .c is a suffix, therefore the following are all regular
     13 # rules.
     14 .c.d .d.c .d .d.e .e.d:
     15 	: 'Making ${.TARGET} from ${.IMPSRC}.'
     16 
     17 # Adding .d and .e as suffixes should turn the above regular rules into
     18 # suffix rules.
     19 .SUFFIXES: .d .e
     20 
     21 issue5a.c issue5b.d issue5c.d issue5d.d issue5e.e:
     22 	: 'Making ${.TARGET} out of nothing.'
     23 
     24 # XXX: As of 2020-10-20, the result is unexpected.
     25 # XXX: .d.c is not a transformation rule but a regular target.
     26 # XXX: .d is not a transformation rule but a regular target.
     27 # XXX: .e.d is not a transformation but a regular target.
     28 # XXX: .c.d is listed as "Files that are only sources".
     29 # XXX: .d.e is listed as "Files that are only sources".
     30 # XXX: The suffixes .c and .e both have the number 2.
     31 # XXX: don't know how to make issue5a.d (even though .c.d is a transformation
     32 # rule and issue5a.c can be readily made)
     33 #.MAKEFLAGS: -dg1
     34 .MAKEFLAGS: -d0
     35