#                                                                    -*-perl-*-

$description = "Test make -B (always remake) option.\n";

$details = "\
Construct a simple makefile that builds a target.
Invoke make once, so it builds everything.  Invoke it again and verify
that nothing is built.  Then invoke it with -B and verify that everything
is built again.";

&touch('bar.x');

run_make_test(q!
.SUFFIXES:

.PHONY: all
all: foo

foo: bar.x
#TAB#@echo cp $< $@
#TAB#@echo "" > $@
!,
              '', 'cp bar.x foo');

run_make_test(undef, '', "#MAKE#: Nothing to be done for 'all'.");
run_make_test(undef, '-B', 'cp bar.x foo');

# Put the timestamp for foo into the future; it should still be remade.
# There are clock skew errors printed here but they will be cleared by
# the comparison code.
utouch(1000, 'foo');
run_make_test(undef, '', "#MAKE#: Nothing to be done for 'all'.");
run_make_test(undef, '-B', 'cp bar.x foo');

# Clean up

rmfiles('bar.x', 'foo');

# Test -B with the re-exec feature: we don't want to re-exec forever
# Savannah bug # 7566

run_make_test(q!
all: ; @:
$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
include foo.x
foo.x: ; @touch $@
!,
              '-B', 'MAKE_RESTARTS=
MAKE_RESTARTS=1');

rmfiles('foo.x');

# Test -B with the re-exec feature: we DO want -B in the "normal" part of the
# makefile.

&touch('blah.x');

run_make_test(q!
all: blah.x ; @echo $@
$(info MAKE_RESTARTS=$(MAKE_RESTARTS))
include foo.x
foo.x: ; @touch $@
blah.x: ; @echo $@
!,
              '-B', 'MAKE_RESTARTS=
MAKE_RESTARTS=1
blah.x
all');

rmfiles('foo.x', 'blah.x');

# Test that $? is set properly with -B; all prerequisites will be newer!

utouch(-10, 'x.b');
touch('x.a');

run_make_test(q!
x.a: x.b ; @echo $?
!,
              '-B', "x.b\n");

unlink(qw(x.a x.b));

1;