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      1  1.6  rillig # $NetBSD: deptgt-end.mk,v 1.6 2020/10/23 19:28:17 rillig Exp $
      2  1.1  rillig #
      3  1.3  rillig # Tests for the special target .END in dependency declarations,
      4  1.3  rillig # which is run after making the desired targets.
      5  1.1  rillig 
      6  1.4  rillig VAR=	Should not be expanded.
      7  1.4  rillig 
      8  1.3  rillig .BEGIN:
      9  1.4  rillig 	: $@ '$${VAR}'
     10  1.4  rillig 	...
     11  1.4  rillig 	: $@ '$${VAR}' deferred
     12  1.4  rillig # Oops: The deferred command must not be expanded twice.
     13  1.4  rillig # The Var_Subst in Compat_RunCommand looks suspicious.
     14  1.5  rillig # The Var_Subst in JobSaveCommand looks suspicious.
     15  1.3  rillig 
     16  1.3  rillig .END:
     17  1.4  rillig 	: $@ '$${VAR}'
     18  1.4  rillig 	...
     19  1.4  rillig 	: $@ '$${VAR}' deferred
     20  1.1  rillig 
     21  1.6  rillig # The .END node can define dependencies, just like a regular target.
     22  1.6  rillig .END: end-action
     23  1.6  rillig end-action: .NOTMAIN
     24  1.6  rillig 	: $@ '$${VAR}'
     25  1.6  rillig 	...
     26  1.6  rillig 	: $@ '$${VAR}' deferred
     27  1.6  rillig 
     28  1.1  rillig all:
     29  1.4  rillig 	: $@ '$${VAR}'
     30  1.4  rillig 	...
     31  1.4  rillig 	: $@ '$${VAR}' deferred
     32  1.4  rillig # Oops: The deferred command must not be expanded twice.
     33  1.4  rillig # The Var_Subst in Compat_RunCommand looks suspicious.
     34  1.5  rillig # The Var_Subst in JobSaveCommand looks suspicious.
     35  1.4  rillig 
     36  1.4  rillig # The deferred commands are run in the order '.END .BEGIN all'.
     37  1.4  rillig # This may be unexpected at first since the natural order would be
     38  1.4  rillig # '.BEGIN all .END', but it is implemented correctly.
     39  1.4  rillig #
     40  1.4  rillig # At the point where the commands of a node with deferred commands are run,
     41  1.4  rillig # the deferred commands are appended to the commands of the .END node.
     42  1.4  rillig # This happens in Compat_RunCommand, and to prevent an endless loop, the
     43  1.4  rillig # deferred commands of the .END node itself are not appended to itself.
     44  1.4  rillig # Instead, the deferred commands of the .END node are run as if they were
     45  1.4  rillig # immediate commands.
     46