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#                                                                    -*-perl-*-

$description = "Test make -W (what if) option.\n";

# Basic build

run_make_test('
a.x: b.x
a.x b.x: ; touch $@
',
              '', "touch b.x\ntouch a.x");

# Run it again: nothing should happen

run_make_test(undef, '', "#MAKE#: `a.x' is up to date.");

# Now run it with -W b.x: should rebuild a.x

run_make_test(undef, '-W b.x', 'touch a.x');

# Put the timestamp for a.x into the future; it should still be remade.

utouch(1000, 'a.x');
run_make_test(undef, '', "#MAKE#: `a.x' is up to date.");
run_make_test(undef, '-W b.x', 'touch a.x');

# Clean up

rmfiles('a.x', 'b.x');

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

# First set it up with a normal build

run_make_test('
all: baz.x ; @:
include foo.x
foo.x: bar.x
	@echo "\$$(info restarts=\$$(MAKE_RESTARTS))" > $@
	@echo "touch $@"
bar.x: ; touch $@
baz.x: bar.x ; @echo "touch $@"
',
              '', '#MAKEFILE#:3: foo.x: No such file or directory
touch bar.x
touch foo.x
restarts=1
touch baz.x');

# Now run with -W bar.x

run_make_test(undef, '-W bar.x', "restarts=\ntouch foo.x\nrestarts=1\ntouch baz.x");

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

1;