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vardebug.mk revision 1.16 
      1 # $NetBSD: vardebug.mk,v 1.16 2025/01/11 21:21:33 rillig Exp $
      2 #
      3 # Demonstrates the debugging output for var.c.
      4 
      5 .MAKEFLAGS: -dv FROM_CMDLINE=
      6 
      7 # expect: Global: VAR = added
      8 VAR=		added		# VarAdd
      9 # expect: Global: VAR = overwritten
     10 VAR=		overwritten	# Var_Set
     11 # expect: Global: delete VAR
     12 .undef VAR
     13 # expect: Global: ignoring delete 'VAR' as it is not found
     14 .undef VAR
     15 
     16 # The variable with the empty name cannot be set at all.
     17 # expect: Global: ignoring ' = empty name' as the variable name '${:U}' expands to empty
     18 ${:U}=		empty name	# Var_Set
     19 # expect: Global: ignoring ' += empty name' as the variable name '${:U}' expands to empty
     20 ${:U}+=		empty name	# Var_Append
     21 
     22 FROM_CMDLINE=	overwritten	# Var_Set (ignored)
     23 
     24 # expect: Global: VAR = 1
     25 VAR=		1
     26 # expect: Global: VAR = 1 2
     27 VAR+=		2
     28 # expect: Global: VAR = 1 2 3
     29 VAR+=		3
     30 
     31 # expect: Pattern for ':M' is "[2]"
     32 # expect: Result of ${VAR:M[2]} is "2"
     33 .if ${VAR:M[2]}			# ModifyWord_Match
     34 .endif
     35 # expect: Pattern for ':N' is "[2]"
     36 # expect: Result of ${VAR:N[2]} is "1 3"
     37 .if ${VAR:N[2]}			# ModifyWord_NoMatch
     38 .endif
     39 
     40 .if ${VAR:S,2,two,}		# ParseModifierPart
     41 .endif
     42 
     43 # expect: Result of ${VAR:Q} is "1\ 2\ 3"
     44 .if ${VAR:Q}			# VarQuote
     45 .endif
     46 
     47 .if ${VAR:tu:tl:Q}		# ApplyModifiers
     48 .endif
     49 
     50 # ApplyModifiers, "Got ..."
     51 # expect: Result of ${:Mvalu[e]} is "value" (eval, defined)
     52 .if ${:Uvalue:${:UM*e}:Mvalu[e]}
     53 .endif
     54 
     55 # expect: Global: delete VAR
     56 .undef ${:UVAR}			# Var_Delete
     57 
     58 # When ApplyModifiers results in an error, this appears in the debug log
     59 # as "is error", without surrounding quotes.
     60 # expect: Result of ${:unknown} is error (eval, defined)
     61 # expect+1: Unknown modifier "unknown"
     62 .if ${:Uvariable:unknown}
     63 .endif
     64 
     65 # expect+1: Variable "UNDEFINED" is undefined
     66 .if ${UNDEFINED}
     67 .endif
     68 
     69 # By default, .SHELL is not defined and thus can be set.  As soon as it is
     70 # accessed, it is initialized in the command line scope (during VarFind),
     71 # where it is set to read-only.  Assigning to it is ignored.
     72 # expect: Command: ignoring '.SHELL = overwritten' as it is read-only
     73 .MAKEFLAGS: .SHELL=overwritten
     74 
     75 DYN = ${:U$@} $@ ${@}
     76 # expect: Global: DYN = $(.TARGET) $(.TARGET) ${@}
     77 DYN := ${DYN}
     78 
     79 .MAKEFLAGS: -d0
     80