#                                                                    -*-perl-*-

$description = "Test pattern rules.";

$details = "";

use Cwd;

$dir = cwd;
$dir =~ s,.*/([^/]+)$,../$1,;


# TEST #0: Make sure that multiple patterns where the same target
#          can be built are searched even if the first one fails
#          to match properly.
#

run_make_test(q!
.PHONY: all

all: case.1 case.2 case.3

# We can't have this, due to "Implicit Rule Search Algorithm" step 5c
#xxx: void

# 1 - existing file
%.1: void
	@exit 1
%.1: #MAKEFILE#
	@exit 0

# 2 - phony
%.2: void
	@exit 1
%.2: 2.phony
	@exit 0
.PHONY: 2.phony

# 3 - implicit-phony
%.3: void
	@exit 1
%.3: 3.implicit-phony
	@exit 0

3.implicit-phony:
!, '', '');

# TEST #1: make sure files that are built via implicit rules are marked
#          as targets (Savannah bug #12202).
#
run_make_test('
TARGETS := foo foo.out

.PHONY: all foo.in

all: $(TARGETS)

%: %.in
	@echo $@

%.out: %
	@echo $@

foo.in: ; @:

',
'',
'foo
foo.out');


# TEST #2: make sure intermediate files that also happened to be
#          prerequisites are not removed (Savannah bug #12267).
#
run_make_test('
$(dir)/foo.o:

$(dir)/foo.y:
	@echo $@

%.c: %.y
	touch $@

%.o: %.c
	@echo $@

.PHONY: install
install: $(dir)/foo.c

',
"dir=$dir",
"$dir/foo.y
touch $dir/foo.c
$dir/foo.o");

unlink("$dir/foo.c");


# TEST #3: make sure precious flag is set properly for targets
#          that are built via implicit rules (Savannah bug #13218).
#
run_make_test('
.DELETE_ON_ERROR:

.PRECIOUS: %.bar

%.bar:; @touch $@ && exit 1

$(dir)/foo.bar:

',
"dir=$dir",
"#MAKE#: *** [$dir/foo.bar] Error 1",
512);

unlink("$dir/foo.bar");


# TEST #4: make sure targets of a matched implicit pattern rule are
#          never considered intermediate (Savannah bug #13022).
#
run_make_test('
.PHONY: all
all: foo.c foo.o

%.h %.c: %.in
	touch $*.h
	touch $*.c

%.o: %.c %.h
	echo $+ >$@

%.o: %.c
	@echo wrong rule

foo.in:
	touch $@

',
'',
'touch foo.in
touch foo.h
touch foo.c
echo foo.c foo.h >foo.o');

unlink('foo.in', 'foo.h', 'foo.c', 'foo.o');

# TEST #5: make sure both prefix and suffix patterns work with multiple
#          target patterns (Savannah bug #26593).
#
run_make_test('
all: foo.s1 foo.s2 p1.foo p2.foo

p1.% p2.%: %.orig
	@echo $@
%.s1 %.s2: %.orig
	@echo $@

.PHONY: foo.orig
',
              '', "foo.s1\np1.foo\n");

# TEST 6: Make sure that non-target files are still eligible to be created
# as part of implicit rule chaining.  Savannah bug #17752.

run_make_test(q!
BIN = xyz
COPY = $(BIN).cp
SRC = $(BIN).c
allbroken: $(COPY) $(BIN) ; @echo ok
$(SRC): ; @echo 'main(){}' > $@
%.cp: % ; @cp $< $@
% : %.c ; @cp $< $@
clean: ; @rm -rf $(SRC) $(COPY) $(BIN)
!,
              '', "ok\n");

unlink(qw(xyz xyz.cp xyz.c));

# TEST 7: Make sure that all prereqs of all "also_make" targets get created
# before any of the things that depend on any of them.  Savannah bug #19108.

run_make_test(q!
final: x ; @echo $@
x: x.t1 x.t2 ; @echo $@
x.t2: dep
dep: ; @echo $@
%.t1 %.t2: ; @echo $*.t1 ; echo $*.t2
!,
              '', "dep\nx.t1\nx.t2\nx\nfinal\n");


# TEST 8: Verify we can remove pattern rules.  Savannah bug #18622.

my @f = (qw(foo.w foo.ch));
touch(@f);

run_make_test(q!
CWEAVE := :

# Disable builtin rules
%.tex : %.w
%.tex : %.w %.ch
!,
              'foo.tex',
              "#MAKE#: *** No rule to make target `foo.tex'.  Stop.", 512);

unlink(@f);

# TEST #9: Test shortest stem selection in pattern rules.

run_make_test('
%.x: ;@echo one
%-mt.x: ;@echo two

all: foo.x foo-mt.x
',
'',
"one\ntwo");

1;

# This tells the test driver that the perl test script executed properly.
1;
