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      1  1.7  rillig # $NetBSD: varname-dot-curdir.mk,v 1.7 2020/10/08 19:09:08 rillig Exp $
      2  1.1  rillig #
      3  1.7  rillig # Tests for the special .CURDIR variable, which is initially set to the
      4  1.7  rillig # canonical path of the current working directory, when make started.
      5  1.1  rillig 
      6  1.7  rillig # In all normal situations, the current directory exists, and its name can
      7  1.7  rillig # be resolved.  If not, make fails at startup.
      8  1.7  rillig #
      9  1.7  rillig # It would be possible on some systems to remove the current directory, even
     10  1.7  rillig # while a process runs in it, but this is so unrealistic that it's no worth
     11  1.7  rillig # testing.
     12  1.7  rillig .if !exists(${.CURDIR})
     13  1.7  rillig .  error
     14  1.7  rillig .endif
     15  1.7  rillig .if !exists(${.CURDIR}/)
     16  1.7  rillig .  error
     17  1.7  rillig .endif
     18  1.7  rillig .if !exists(${.CURDIR}/.)
     19  1.7  rillig .  error
     20  1.7  rillig .endif
     21  1.7  rillig .if !exists(${.CURDIR}/..)
     22  1.7  rillig .  error
     23  1.7  rillig .endif
     24  1.1  rillig 
     25  1.6  rillig # Until 2020-10-04, assigning the result of a shell assignment to .CURDIR
     26  1.6  rillig # tried to add the shell command ("echo /") to the .PATH instead of the
     27  1.6  rillig # output of the shell command ("/").  Since "echo /" does not exist, the
     28  1.6  rillig # .PATH was left unmodified.  See VarAssign_Eval.
     29  1.6  rillig #
     30  1.6  rillig # Since 2020-10-04, the output of the shell command is added to .PATH.
     31  1.6  rillig .CURDIR!=	echo /
     32  1.6  rillig .if ${.PATH:M/} != "/"
     33  1.6  rillig .  error
     34  1.6  rillig .endif
     35  1.6  rillig 
     36  1.6  rillig # A normal assignment works fine, as does a substitution assignment.
     37  1.6  rillig # Appending to .CURDIR does not make sense, therefore it doesn't matter that
     38  1.6  rillig # this code path is buggy as well.
     39  1.6  rillig .CURDIR=	/
     40  1.6  rillig .if ${.PATH:M/} != "/"
     41  1.6  rillig .  error
     42  1.6  rillig .endif
     43  1.6  rillig 
     44  1.1  rillig all:
     45  1.1  rillig 	@:;
     46