tests/scripts/features/override

#                                                                    -*-perl-*-

$description = "Test the override directive on variable assignments.";

$details = "";

# TEST 0: Basic override

run_make_test('
X = start
override recur = $(X)
override simple := $(X)
X = end
all: ; @echo "$(recur) $(simple)"
',
              'recur=I simple=J', "end start\n");

# TEST 1: Override with append

run_make_test('
X += X1
override X += X2
override Y += Y1
Y += Y2
all: ; @echo "$(X) $(Y)"
',
              '', "X1 X2 Y1\n");

# TEST 2: Override with append to the command line

run_make_test(undef, 'X=C Y=C', "C X2 C Y1\n");

# Test override of define/endef

run_make_test('
override define foo
@echo First comes the definition.
@echo Then comes the override.
endef
all: ; $(foo)
',
              'foo=Hello', "First comes the definition.\nThen comes the override.\n");

# Directive lines cannot begin with TAB

run_make_test(q!
#TAB#override FOO = bar
all:;@echo hi
!,
              '', "#MAKEFILE#:2: warning: directive lines cannot start with TAB\nhi");

run_make_test(q!
#TAB#override#TAB#export FOO = bar
all:;@echo hi
!,
              '', "#MAKEFILE#:2: warning: directive lines cannot start with TAB\nhi");

run_make_test(q!
    override#TAB#export FOO = bar
all:;@echo hi
!,
              '', "hi");

1;