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# -*-perl-*-
$description = "Test the --warn-undefined-variables option.";
$details = "Verify that warnings are printed for referencing undefined variables.";
# Verify that make's special variables don't warn even if they're not set
run_make_test(q!
vars := $(.VARIABLES) $(MAKECMDGOALS) $(MAKE_RESTARTS) $(CURDIR)
vars += $(GNUMAKEFLAGS) $(MAKEFLAGS) $(MFLAGS) $(MAKE_COMMAND) $(MAKE)
vars += $(MAKEFILE_LIST) $(MAKEOVERRIDES) $(-*-command-variables-*-)
vars += $(.RECIPEPREFIX) $(.LOADED) $(.FEATURES)
vars += $(SHELL) $(.SHELLFLAGS) $(MAKE_TERMOUT) $(MAKE_TERMERR)
vars += $(.DEFAULT) $(.DEFAULT_GOAL) $(-*-eval-flags-*-) $(SUFFIXES)
vars += $(VPATH) $(GPATH)
all:;
!,
'--warn-undefined-variables', "#MAKE#: 'all' is up to date.");
# Without --warn-undefined-variables, nothing should happen
run_make_test('
EMPTY =
EREF = $(EMPTY)
UREF = $(UNDEFINED)
SEREF := $(EREF)
SUREF := $(UREF)
all: ; @echo ref $(EREF) $(UREF)',
'', 'ref');
# With --warn-undefined-variables, it should warn me
run_make_test(undef, '--warn-undefined-variables',
"#MAKEFILE#:7: warning: undefined variable 'UNDEFINED'
#MAKEFILE#:9: warning: undefined variable 'UNDEFINED'
ref");
# sv 63609.
# Test for buffer overrun in warn_undefined.
run_make_test(q!
all:;
X := $(averyveryverylongvariablename)
!,
'--warn-undefined-variables',
"#MAKEFILE#:3: warning: undefined variable 'averyveryverylongvariablename'
#MAKE#: 'all' is up to date.\n"
);
1;
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