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      1  1.4  rillig # $NetBSD: varname-make_print_var_on_error-jobs.mk,v 1.4 2023/11/19 22:32:44 rillig Exp $
      2  1.1  rillig #
      3  1.1  rillig # Tests for the special MAKE_PRINT_VAR_ON_ERROR variable, which prints the
      4  1.1  rillig # values of selected variables on error.
      5  1.1  rillig #
      6  1.4  rillig # The variable .ERROR_CMD contains all commands of the target, with
      7  1.1  rillig # expressions expanded, just as they were printed to the shell command file.
      8  1.1  rillig #
      9  1.1  rillig # The commands in .ERROR_CMD are space-separated.  Since each command usually
     10  1.1  rillig # contains spaces as well, this value is only intended as a first hint to what
     11  1.1  rillig # happened.  For more details, use the debug options -de, -dj, -dl, -dn, -dx.
     12  1.2  rillig #
     13  1.2  rillig # See also:
     14  1.2  rillig #	compat-error.mk
     15  1.2  rillig 
     16  1.3  rillig # XXX: As of 2021-02-04, PrintOnError calls Var_Subst with SCOPE_GLOBAL, which
     17  1.2  rillig # does not expand the node-local variables like .TARGET.  This results in the
     18  1.2  rillig # double '${.TARGET}' in the output.
     19  1.1  rillig 
     20  1.1  rillig # As of 2020-10-23, .ERROR_CMD only works in parallel mode.
     21  1.1  rillig .MAKEFLAGS: -j1
     22  1.1  rillig 
     23  1.1  rillig MAKE_PRINT_VAR_ON_ERROR=	.ERROR_TARGET .ERROR_CMD
     24  1.1  rillig 
     25  1.1  rillig all:
     26  1.2  rillig 	@: before '${.TARGET}' '$${.TARGET}' '$$$${.TARGET}'
     27  1.2  rillig 	echo fail ${.TARGET}; false '${.TARGET}' '$${.TARGET}' '$$$${.TARGET}'
     28  1.2  rillig 	@: after '${.TARGET}' '$${.TARGET}' '$$$${.TARGET}'
     29