Home | History | Annotate | Line # | Download | only in unit-tests
vardebug.mk revision 1.7 
      1 # $NetBSD: vardebug.mk,v 1.7 2021/02/04 21:42:47 rillig Exp $
      2 #
      3 # Demonstrates the debugging output for var.c.
      4 
      5 .MAKEFLAGS: -dv FROM_CMDLINE=
      6 
      7 VAR=		added		# VarAdd
      8 VAR=		overwritten	# Var_Set
      9 .undef VAR			# Var_Delete (found)
     10 .undef VAR			# Var_Delete (not found)
     11 
     12 # The variable with the empty name cannot be set at all.
     13 ${:U}=		empty name	# Var_Set
     14 ${:U}+=		empty name	# Var_Append
     15 
     16 FROM_CMDLINE=	overwritten	# Var_Set (ignored)
     17 
     18 VAR=		1
     19 VAR+=		2
     20 VAR+=		3
     21 
     22 .if ${VAR:M[2]}			# ModifyWord_Match
     23 .endif
     24 .if ${VAR:N[2]}			# ModifyWord_NoMatch (no debug output)
     25 .endif
     26 
     27 .if ${VAR:S,2,two,}		# ParseModifierPart
     28 .endif
     29 
     30 .if ${VAR:Q}			# VarQuote
     31 .endif
     32 
     33 .if ${VAR:tu:tl:Q}		# ApplyModifiers
     34 .endif
     35 
     36 # ApplyModifiers, "Got ..."
     37 .if ${:Uvalue:${:UM*e}:Mvalu[e]}
     38 .endif
     39 
     40 .undef ${:UVAR}			# Var_Delete
     41 
     42 # When ApplyModifiers results in an error, this appears in the debug log
     43 # as "is error", without surrounding quotes.
     44 .if ${:Uvariable:unknown}
     45 .endif
     46 
     47 # XXX: The error message is "Malformed conditional", which is wrong.
     48 # The condition is syntactically fine, it just contains an undefined variable.
     49 #
     50 # There is a specialized error message for "Undefined variable", but as of
     51 # 2020-08-08, that is not covered by any unit tests.  It might even be
     52 # unreachable.
     53 .if ${UNDEFINED}
     54 .endif
     55 
     56 # By default, .SHELL is not defined and thus can be set.  As soon as it is
     57 # accessed, it is initialized in the command line scope (during VarFind),
     58 # where it is set to read-only.  Assigning to it is ignored.
     59 .MAKEFLAGS: .SHELL=overwritten
     60 
     61 .MAKEFLAGS: -d0
     62 
     63 all:
     64 	@:
     65