#                                                                    -*-perl-*-
$description = "Test second expansion in implicit rules.";

$details = "";

use Cwd;

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


# Test #1: automatic variables.
#
run_make_test(q!
.SECONDEXPANSION:
.DEFAULT: ; @echo '$@'

foo.a: bar baz

foo.a: biz | buz

foo.%: 1.$$@ \
       2.$$< \
       $$(addprefix 3.,$$^) \
       $$(addprefix 4.,$$+) \
       5.$$| \
       6.$$* ; @:

1.foo.a \
2.bar \
3.bar \
3.baz \
3.biz \
4.bar \
4.baz \
4.biz \
5.buz \
6.a: ; @echo '$@'

!,
'',
'1.foo.a
2.bar
3.bar
3.baz
3.biz
4.bar
4.baz
4.biz
5.buz
6.a
bar
baz
biz
buz
');


# Test #2: target/pattern -specific variables.
#
run_make_test(q!
.SECONDEXPANSION:
foo.x:

foo.%: $$(%_a) $$(%_b) bar ; @:

foo.x: x_a := bar

%.x: x_b := baz

bar baz: ; @echo '$@'
!,
              '', "bar\nbaz\n");


# Test #3: order of prerequisites.
#
run_make_test(q!
.SECONDEXPANSION:
.DEFAULT: ; @echo '$@'

all: foo bar baz


# Subtest #1
#
%oo: %oo.1; @:

foo: foo.2

foo: foo.3

foo.1: ; @echo '$@'


# Subtest #2
#
bar: bar.2

%ar: %ar.1; @:

bar: bar.3

bar.1: ; @echo '$@'


# Subtest #3
#
baz: baz.1

baz: baz.2

%az: ; @:
!,
              '',
'foo.1
foo.2
foo.3
bar.1
bar.2
bar.3
baz.1
baz.2
');


# Test #4: stem splitting logic.
#
run_make_test(q!
.SECONDEXPANSION:
$(dir)/tmp/bar.o:

$(dir)/tmp/foo/bar.c: ; @echo '$@'
$(dir)/tmp/bar/bar.c: ; @echo '$@'
foo.h: ; @echo '$@'

%.o: $$(addsuffix /%.c,foo bar) foo.h ; @echo '$@: {$<} $^'
!,
              "dir=$dir", "$dir/tmp/foo/bar.c
$dir/tmp/bar/bar.c
foo.h
$dir/tmp/bar.o: {$dir/tmp/foo/bar.c} $dir/tmp/foo/bar.c $dir/tmp/bar/bar.c foo.h
");


# Test #5: stem splitting logic and order-only prerequisites.
#
run_make_test(q!
.SECONDEXPANSION:
$(dir)/tmp/foo.o: $(dir)/tmp/foo.c
$(dir)/tmp/foo.c: ; @echo '$@'
bar.h: ; @echo '$@'

%.o: %.c|bar.h ; @echo '$@: {$<} {$|} $^'

!,
              "dir=$dir", "$dir/tmp/foo.c
bar.h
$dir/tmp/foo.o: {$dir/tmp/foo.c} {bar.h} $dir/tmp/foo.c
");


# Test #6: lack of implicit prerequisites.
#
run_make_test(q!
.SECONDEXPANSION:
foo.o: foo.c
foo.c: ; @echo '$@'

%.o: ; @echo '$@: {$<} $^'
!,
              '', "foo.c\nfoo.o: {foo.c} foo.c\n");


# Test #7: Test stem from the middle of the name.
#
run_make_test(q!
.SECONDEXPANSION:
foobarbaz:

foo%baz: % $$*.1 ; @echo '$*'

bar bar.1: ; @echo '$@'
!,
              '', "bar\nbar.1\nbar\n");


# Test #8: Make sure stem triple-expansion does not happen.
#
run_make_test(q!
.SECONDEXPANSION:
foo$$bar:

f%r: % $$*.1 ; @echo '$*'

oo$$ba oo$$ba.1: ; @echo '$@'
!,
              '', 'oo$ba
oo$ba.1
oo$ba
');

# Test #9: Check the value of $^
run_make_test(q!
.SECONDEXPANSION:

%.so: | $$(extra) ; @echo $^

foo.so: extra := foo.o
foo.so:
foo.o:
!,
              '', "\n");

# Test #10: Test second expansion with second expansion prerequisites
# Ensures pattern_search() recurses with SE prereqs.
touch('a');
run_make_test(q!
.SECONDEXPANSION:
sim_base_rgg := just_a_name
sim_base_src := a
sim_base_f := a a a
sim_%.f: $${sim_$$*_f} ; echo $@
sim_%.src: $${sim_$$*_src} ; echo $@
sim_%: \
        $$(if $$(sim_$$*_src),sim_%.src) \
        $$(if $$(sim_$$*_f),sim_%.f) \
        $$(if $$(sim_$$*_rgg),$$(sim_$$*_rgg).s) ; echo $@
!,
              '-s sim_base', "#MAKE#: *** No rule to make target 'sim_base'.  Stop.", 512);

unlink('a');

# Ensure that order-only tokens embedded in second expansions are parsed
run_make_test(q!
.SECONDEXPANSION:
PREREQS=p1|p2
P2=p2
all : foo bar
f%o: $$(PREREQS) ; @echo '$@' from '$^' and '$|'
b%r: p1|$$(P2)   ; @echo '$@' from '$^' and '$|'
p% : ; : $@
!,
              "", ": p1\n: p2\nfoo from p1 and p2\nbar from p1 and p2\n");

# SV 28456 : Don't reset $$< for default recipes
run_make_test(q!
.SECONDEXPANSION:

.PHONY: foo bar
foo: bar
foo: $$(info $$<)
%oo: ;
!,
              '', "bar\n#MAKE#: Nothing to be done for 'foo'.\n");

# SV 54161: Expand $$* properly when it contains a path

run_make_test(q!
.SECONDEXPANSION:
%x: $$(info $$*); @echo '$*'
!,
              'q/ux', "q/u\nq/u\n");


# sv 60188.
# Test that a file explicitly mentioned by the user and made by an implicit
# rule is not considered intermediate.

touch('hello.z');

# subtest 1.
# hello.x is derived from the stem and thus is an intermediate file.
run_make_test(q!
.SECONDEXPANSION:
dep:=.x
all: hello.z
%.z: %$$(dep) ; @echo $@
%.x: ;
!, '', "#MAKE#: Nothing to be done for 'all'.\n");


# subtest 2.
# test.x is explicitly mentioned and thus is not an intermediate file.
run_make_test(q!
.SECONDEXPANSION:
dep:=test.x
all: hello.z
%.z: %.x $$(dep) ; @echo $@
%.x: ;
!, '', "hello.z\n");

# subtest 3.
# make is building hello.z and does not second expand the prerequisites of rule
# 'unrelated: $$(dep)'. '$$(dep)' stays not expanded and 'hello.x' is never
# entered to the database. Make considers 'hello.x' intermediate while building
# 'hello.z'. Because 'hello.z' is present and 'hello.x' is missing and
# 'hello.x' is intermediate, there is no need to rebuild 'hello.z'.
run_make_test(q!
.SECONDEXPANSION:
dep:=hello.x
all: hello.z
%.z: %.x; @echo $@
%.x: ;
unrelated: $$(dep)
!, '', "#MAKE#: Nothing to be done for 'all'.\n");

# subtest 4.
# Just like subtest 3. $$(dep) is not second expanded. 'hello.x' is
# intermediate.
run_make_test(q!
.SECONDEXPANSION:
dep:=hello.x
all: hello.z
%.z: %.x; @echo $@
%.x: ;
%.q: $$(dep)
!, '', "#MAKE#: Nothing to be done for 'all'.\n");

unlink('hello.z');


# sv 60188.
# Test that a file explicitly mentioned by the user and made by an implicit
# rule is not considered intermediate, even when the builtin rules are used.

touch('hello.x');
touch('hello.tsk');

# subtest 1.
# hello.z is explicitly mentioned and thus is not an intermediate file.
run_make_test(q!
.SECONDEXPANSION:
dep:=hello.z
all: hello.tsk
%.tsk: $$(dep) ; @echo $@
%.z : %.x ; @echo $@
!, '', "hello.z\nhello.tsk");

# subtest 2.
# hello.z is derived from the stem and thus is an intermediate file.
run_make_test(q!
.SECONDEXPANSION:
dep:=.z
all: hello.tsk
%.tsk: %$$(dep) ; @echo $@
%.z : %.x ; @echo $@
!, '', "#MAKE#: Nothing to be done for 'all'.\n");

unlink('hello.x');
unlink('hello.tsk');


# sv 60659. Second expansion of automatic variables inside a function in the
# prerequisite list.
# $$@ expands to the target in the 1st and following rules.
# $$* expands to the stem in the 1st and following rules.
# $$<,$$^,$$+,$$|,$$?,$$% expand to the empty string in the prerequisite list
# of the 1st rule.
# $$<,$$^,$$+,$$|,$$?,$$% in the prerequisite list of the 2nd (and following)
# rule expand to the values from the 1st rule.
# $$% cannot be used in prerequisites, because in pattern rules % is
# substituted for stem.


# subtest 1. Pattern rules. 1st rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x
%.x: 5.z 6.z 5.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=2.x,<=,^=,+=,|=,?=,*=2
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 2. Pattern rules. 2nd rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x 1.x
2.x: 5.z 6.z 5.z | 7.z 7.z 8.z
1.x: 1.z 2.z 2.z | 3.z 4.z
%.x: 9.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=2.x,<=5.z,^=5.z 6.z,+=5.z 6.z 5.z,|=7.z 8.z,?=,*=2
@=1.x,<=1.z,^=1.z 2.z,+=1.z 2.z 2.z,|=3.z 4.z,?=,*=1
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 3. Static pattern rules. 1st rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x
2.x: %.x: 5.z 6.z 5.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=2.x,<=,^=,+=,|=,?=,*=2
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 4. Static pattern rules. 2nd rule.
run_make_test(q!
.SECONDEXPANSION:
all: 15.x 1.x
15.x: 5.z 6.z 5.z | 7.z 7.z 8.z
1.x: 1.z 2.z 2.z | 3.z 4.z
15.x 1.x: %.x: 9.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=15.x,<=5.z,^=5.z 6.z,+=5.z 6.z 5.z,|=7.z 8.z,?=,*=15
@=1.x,<=1.z,^=1.z 2.z,+=1.z 2.z 2.z,|=3.z 4.z,?=,*=1
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 5. Grouped targets in implicit rules. 1st rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x
%.x %.xx&: 5.z 6.z 5.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=2.x,<=,^=,+=,|=,?=,*=2
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 6. Grouped targets in implicit rules. 2nd rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x 1.xx
2.x: 5.z 6.z 5.z | 7.z 7.z 8.z
1.xx: 1.z 2.z 2.z | 3.z 4.z
%.x %.xx&: 9.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
%.z: ;
!, '',
"@=2.x,<=5.z,^=5.z 6.z,+=5.z 6.z 5.z,|=7.z 8.z,?=,*=2
@=1.xx,<=1.z,^=1.z 2.z,+=1.z 2.z 2.z,|=3.z 4.z,?=,*=1
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 7. Double colon rule.
run_make_test(q!
.SECONDEXPANSION:
all: 2.x
%.x:: 5.z 6.z 5.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*) ;
5.z 6.z: ;
!, '',
"@=2.x,<=,^=,+=,|=,?=,*=2
#MAKE#: Nothing to be done for 'all'.\n");

# sv 62324.
# Integrity self check.
run_make_test(q!
.SECONDEXPANSION:
all: bye.x
%.x: $$(firstword %.1;
!, '', "#MAKE#: *** unterminated call to function 'firstword': missing ')'.  Stop.", 512);

# sv 62706.
# Test that makes avoids second expanding prerequisites of the rules which are
# not tried during implicit search.
# Here, make tries rules '%.tsk: %.o' and '%.o' and their prerequisites are
# second expanded.
# Rules '%.bin: %.x' and '%.x:' are not used in implicit search for 'hello.tsk'
# and 'hello.o' and their prerequisites are not expanded.
run_make_test(q!
.SECONDEXPANSION:
%.bin: %.x $$(info second expansion of $$@ prereqs); $(info $@ from $<)
%.tsk: %.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
%.x: $$(info second expansion of $$@ prereqs); $(info $@)
%.o: $$(info second expansion of $$@ prereqs); $(info $@)
!, '-R hello.tsk',
"second expansion of hello.o prereqs
second expansion of hello.tsk prereqs
hello.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# No side effects from second expansion of unrelated rules.
run_make_test(q!
.SECONDEXPANSION:
all: hello.tsk
%.tsk: %.o; exit 1
hello.o:;
%.q: $$(shell touch hello.1);
!, '',
"exit 1
#MAKE#: *** [#MAKEFILE#:4: hello.tsk] Error 1\n", 512);

# sv 62706.
# Second expansion of intermediate prerequisites.
# The rule to build hello.x is implicit.
# Test that $$(deps) is secondary expanded.
run_make_test(q!
deps:=hello.h
.SECONDEXPANSION:
all: hello.tsk
%.tsk: %.x; $(info $@)
%.x: $$(deps); $(info $@)
hello.h:; $(info $@)
!, '', "hello.h\nhello.x\nhello.tsk\n#MAKE#: Nothing to be done for 'all'.\n");

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