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directive-include.mk revision 1.6 
      1  1.6  rillig # $NetBSD: directive-include.mk,v 1.6 2021/12/03 22:43:50 rillig Exp $
      2  1.1  rillig #
      3  1.1  rillig # Tests for the .include directive, which includes another file.
      4  1.1  rillig 
      5  1.1  rillig # TODO: Implementation
      6  1.1  rillig 
      7  1.2  rillig .MAKEFLAGS: -dc
      8  1.2  rillig 
      9  1.2  rillig # All included files are recorded in the variable .MAKE.MAKEFILES.
     10  1.2  rillig # In this test, only the basenames of the files are compared since
     11  1.2  rillig # the directories can differ.
     12  1.2  rillig .include "/dev/null"
     13  1.2  rillig .if ${.MAKE.MAKEFILES:T} != "${.PARSEFILE} null"
     14  1.2  rillig .  error
     15  1.2  rillig .endif
     16  1.2  rillig 
     17  1.2  rillig # Each file is recorded only once in the variable .MAKE.MAKEFILES.
     18  1.3  rillig # Between 2015-11-26 and 2020-10-31, the very last file could be repeated,
     19  1.3  rillig # due to an off-by-one bug in ParseTrackInput.
     20  1.2  rillig .include "/dev/null"
     21  1.3  rillig .if ${.MAKE.MAKEFILES:T} != "${.PARSEFILE} null"
     22  1.2  rillig .  error
     23  1.2  rillig .endif
     24  1.2  rillig 
     25  1.4  rillig .include "nonexistent.mk"
     26  1.4  rillig .include "/dev/null"		# size 0
     27  1.4  rillig # including a directory technically succeeds, but shouldn't.
     28  1.4  rillig #.include "."			# directory
     29  1.4  rillig 
     30  1.5  rillig # As of 2020-11-21, anything after the delimiter '"' is ignored.
     31  1.5  rillig .include "/dev/null" and ignore anything in the rest of the line.
     32  1.5  rillig 
     33  1.6  rillig # The filename to be included can contain expressions.
     34  1.6  rillig DEV=	null
     35  1.6  rillig .include "/dev/${DEV}"
     36  1.6  rillig 
     37  1.6  rillig # Expressions in double quotes or angle quotes are first parsed naively, to
     38  1.6  rillig # find the closing '"'.  In a second step, the expressions are expanded.  This
     39  1.6  rillig # means that the expressions cannot include the characters '"' or '>'.  This
     40  1.6  rillig # restriction is not practically relevant since the expressions inside
     41  1.6  rillig # '.include' directives are typically kept as simple as possible.
     42  1.6  rillig #
     43  1.6  rillig # If the whole line were expanded before parsing, the filename to be included
     44  1.6  rillig # would be empty, and the closing '"' would be in the trailing part of the
     45  1.6  rillig # line, which is ignored as of 2021-12-03.
     46  1.6  rillig DQUOT=	"
     47  1.6  rillig .include "${DQUOT}"
     48  1.6  rillig 
     49  1.1  rillig all:
     50