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deptgt-makeflags.mk revision 1.4 
      1 # $NetBSD: deptgt-makeflags.mk,v 1.4 2020/10/23 14:48:49 rillig Exp $
      2 #
      3 # Tests for the special target .MAKEFLAGS in dependency declarations,
      4 # which adds command line options later, at parse time.
      5 
      6 # The -D option sets a variable in the "Global" scope and thus can be
      7 # undefined later.
      8 .MAKEFLAGS: -D VAR
      9 
     10 .if ${VAR} != 1
     11 .  error
     12 .endif
     13 
     14 .undef VAR
     15 
     16 .if defined(VAR)
     17 .  error
     18 .endif
     19 
     20 .MAKEFLAGS: -D VAR
     21 
     22 .if ${VAR} != 1
     23 .  error
     24 .endif
     25 
     26 .MAKEFLAGS: VAR="value"' with'\ spaces
     27 
     28 .if ${VAR} != "value with spaces"
     29 .  error
     30 .endif
     31 
     32 # Variables set on the command line as VAR=value are placed in the
     33 # "Command" scope and thus cannot be undefined.
     34 .undef VAR
     35 
     36 .if ${VAR} != "value with spaces"
     37 .  error
     38 .endif
     39 
     40 # When parsing this line, each '$$' becomes '$', resulting in '$$$$'.
     41 # This is assigned to the variable DOLLAR.
     42 # In the condition, that variable is expanded, and at that point, each '$$'
     43 # becomes '$' again, the final expression is thus '$$'.
     44 .MAKEFLAGS: -dcv
     45 .MAKEFLAGS: DOLLAR=$$$$$$$$
     46 .if ${DOLLAR} != "\$\$"
     47 .endif
     48 .MAKEFLAGS: -d0
     49 
     50 all:
     51 	@:;
     52