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      1  1.24  rillig # $NetBSD: deptgt.mk,v 1.24 2025/06/28 22:39:28 rillig Exp $
      2   1.1  rillig #
      3   1.2  rillig # Tests for special targets like .BEGIN or .SUFFIXES in dependency
      4   1.2  rillig # declarations.
      5   1.1  rillig 
      6   1.1  rillig # TODO: Implementation
      7   1.1  rillig 
      8   1.3  rillig # Just in case anyone tries to compile several special targets in a single
      9   1.3  rillig # dependency line: That doesn't work, and make immediately rejects it.
     10  1.24  rillig # expect+1: warning: Extra target ".PHONY" ignored
     11   1.3  rillig .SUFFIXES .PHONY: .c.o
     12   1.3  rillig 
     13   1.5  rillig # The following lines demonstrate how 'targets' is set and reset during
     14   1.4  rillig # parsing of dependencies.  To see it in action, set breakpoints in:
     15   1.4  rillig #
     16  1.11  rillig #	ParseDependency		at the beginning
     17   1.6  rillig #	FinishDependencyGroup	at "targets = NULL"
     18   1.4  rillig #	Parse_File		at "Lst_Free(targets)"
     19   1.8  rillig #	Parse_File		at "targets = Lst_New()"
     20   1.7  rillig #	ParseLine_ShellCommand	at "targets == NULL"
     21   1.4  rillig #
     22   1.5  rillig # Keywords:
     23   1.5  rillig #	parse.c:targets
     24   1.5  rillig 
     25   1.5  rillig target1 target2: sources	# targets := [target1, target2]
     26   1.5  rillig 	: command1		# targets == [target1, target2]
     27   1.5  rillig 	: command2		# targets == [target1, target2]
     28   1.5  rillig VAR=value			# targets := NULL
     29  1.14  rillig # expect+1: Unassociated shell command ": command3		# parse error, since targets == NULL"
     30   1.5  rillig 	: command3		# parse error, since targets == NULL
     31   1.4  rillig 
     32   1.9  rillig # In a dependency declaration, the list of targets can be empty.
     33  1.15  rillig # It doesn't matter whether the empty string is generated by an
     34   1.9  rillig # expression or whether it is just omitted.
     35   1.9  rillig .MAKEFLAGS: -dp
     36   1.9  rillig ${:U}: empty-source
     37   1.9  rillig 	: command for empty targets list
     38   1.9  rillig : empty-source
     39   1.9  rillig 	: command for empty targets list
     40   1.9  rillig .MAKEFLAGS: -d0
     41   1.9  rillig 
     42  1.22  rillig # An expression based on an undefined variable is allowed on both sides of
     43  1.22  rillig # the dependency declaration.
     44  1.22  rillig .MAKEFLAGS: -dv
     45  1.22  rillig deptgt-${UNDEF}: depsrc-${UNDEF}
     46  1.22  rillig .MAKEFLAGS: -d0
     47  1.22  rillig 
     48  1.20  rillig # In a dependency declaration, the whole line is expanded before interpreting
     49  1.20  rillig # the line.
     50  1.23  rillig # expect+1: Unknown modifier ":Z"
     51  1.20  rillig ${:U:Z}:
     52  1.20  rillig # After expanding the line as a whole, each target is parsed but not
     53  1.20  rillig # evaluated, separately, in ParseDependencyTargetWord.
     54  1.23  rillig # expect+1: Unknown modifier ":Z"
     55  1.20  rillig $${:U:Z}:
     56  1.10  rillig 
     57  1.24  rillig # expect+1: warning: Extra target "ordinary" ignored
     58  1.12  rillig .END ordinary:
     59  1.12  rillig 
     60  1.24  rillig # expect+1: warning: Extra target "ordinary" ignored
     61  1.12  rillig .PATH ordinary:
     62  1.12  rillig 
     63  1.16  rillig # expect+1: warning: Special and mundane targets don't mix. Mundane ones ignored
     64  1.12  rillig ordinary .PATH:
     65