1 # $NetBSD: opt-debug-lint.mk,v 1.11 2020/10/24 08:50:17 rillig Exp $
3 # Tests for the -dL command line option, which runs additional checks
4 # to catch common mistakes, such as unclosed variable expressions.
8 # Since 2020-09-13, undefined variables that are used on the left-hand side
9 # of a condition at parse time get a proper error message. Before, the
10 # error message was "Malformed conditional" only, which was wrong and
11 # misleading. The form of the condition is totally fine, it's the evaluation
14 # Since 2020-09-13, the "Malformed conditional" error message is not printed
23 # The dynamic variables like .TARGET are treated specially. It does not make
24 # sense to expand them in the global scope since they will never be defined
25 # there under normal circumstances. Therefore they expand to a string that
26 # will later be expanded correctly, when the variable is evaluated again in
27 # the scope of an actual target.
29 # Even though the "@" variable is not defined at this point, this is not an
30 # error. In all practical cases, this is no problem. This particular test
31 # case is made up and unrealistic.
32 .if $@ != "\$(.TARGET)"
36 # Since 2020-09-13, Var_Parse properly reports errors for undefined variables,
37 # but only in lint mode. Before, it had only silently returned var_Error,
38 # hoping for the caller to print an error message. This resulted in the
39 # well-known "Malformed conditional" error message, even though the
40 # conditional was well-formed and the only error was an undefined variable.
45 # Since 2020-09-14, dependency lines may contain undefined variables.
46 # Before, undefined variables were forbidden, but this distinction was not
47 # observable from the outside of the function Var_Parse.
50 # In a condition that has a defined(UNDEF) guard, all guarded conditions
51 # may assume that the variable is defined since they will only be evaluated
52 # if the variable is indeed defined. Otherwise they are only parsed, and
53 # for parsing it doesn't make a difference whether the variable is defined
55 .if defined(UNDEF) && exists(${UNDEF})
59 # Since 2020-10-03, in lint mode the variable modifier must be separated
60 # by colons. See varparse-mod.mk.
61 .if ${value:LPL} != "value"
65 # Since 2020-10-03, in lint mode the variable modifier must be separated
66 # by colons. See varparse-mod.mk.
67 .if ${value:${:UL}PL} != "LPL}" # FIXME: "LPL}" is unexpected here.
68 . error ${value:${:UL}PL}