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vardebug.mk revision 1.11 
      1 # $NetBSD: vardebug.mk,v 1.11 2024/07/05 19:47:22 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, 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 ${:unknown} is error (eval-defined, defined)
     61 # expect+2: Malformed conditional (${:Uvariable:unknown})
     62 # expect+1: while evaluating "${:Uvariable:unknown}" with value "variable": Unknown modifier "unknown"
     63 .if ${:Uvariable:unknown}
     64 .endif
     65 
     66 # XXX: The error message is "Malformed conditional", which is wrong.
     67 # The condition is syntactically fine, it just contains an undefined variable.
     68 #
     69 # There is a specialized error message for "Undefined variable", but as of
     70 # 2020-08-08, that is not covered by any unit tests.  It might even be
     71 # unreachable.
     72 # expect+1: Malformed conditional (${UNDEFINED})
     73 .if ${UNDEFINED}
     74 .endif
     75 
     76 # By default, .SHELL is not defined and thus can be set.  As soon as it is
     77 # accessed, it is initialized in the command line scope (during VarFind),
     78 # where it is set to read-only.  Assigning to it is ignored.
     79 # expect: Command: ignoring '.SHELL = overwritten' as it is read-only
     80 .MAKEFLAGS: .SHELL=overwritten
     81 
     82 .MAKEFLAGS: -d0
     83