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

$details = "";

# TEST #0: Test handing of '$' in prerequisites with and without second
# expansion.

# If we don't support archives then the prerequisite is different
my $prereq = exists $FEATURES{'archives'} ? '$' : '$(PRE)';

run_make_test(q!
ifdef SE
  .SECONDEXPANSION:
endif
foo$$bar: bar$$baz bar$$biz ; @echo '$@ : $^'
PRE = one two
bar$$baz: $$(PRE)
baraz: $$(PRE)
PRE = three four
.DEFAULT: ; @echo '$@'
!,
              '',
              "$prereq\nbar\$biz\nfoo\$bar : bar\$baz bar\$biz");

run_make_test(undef, 'SE=1', "three\nfour\nbariz\nfoo\$bar : baraz bariz");

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

foo: bar baz

foo: biz | buz

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

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


# Test #2: target/pattern -specific variables.
#
run_make_test(q!
.SECONDEXPANSION:
.DEFAULT: ; @echo '$@'

foo.x: $$a $$b

foo.x: a := bar

%.x: b := baz
!,
'',
'bar
baz
');


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

all: foo bar baz

# Subtest #1
foo: foo.1; @:
foo: foo.2
foo: foo.3

# Subtest #2
bar: bar.2
bar: bar.1; @:
bar: bar.3

# Subtest #3
baz: baz.1
baz: baz.2
baz: ; @:
!,
'',
'foo.1
foo.2
foo.3
bar.1
bar.2
bar.3
baz.1
baz.2
');

# TEST #4: eval in a context where there is no reading_file
run_make_test(q!
.SECONDEXPANSION:
all : $$(eval $$(info test))
!,
            '', "test\n#MAKE#: Nothing to be done for 'all'.\n");

# TEST #5: (NEGATIVE) catch eval in a prereq list trying to create new
# target/prereq relationships.

run_make_test(q!
.SECONDEXPANSION:
proj1.exe : proj1.o $$(eval $$(test))
define test
proj1.o : proj1.c
proj1.c: proj1.h
endef
!,
              '', "#MAKE#: *** prerequisites cannot be defined in recipes.  Stop.\n", 512);


# Automatic $$+ variable expansion issue.  Savannah bug #25780
run_make_test(q!
all : foo foo
.SECONDEXPANSION:
all : $$+ ; @echo '$+'
foo : ;
!,
                  '', "foo foo foo foo\n");


# Automatic $$+ variable expansion issue.  Savannah bug #25780
run_make_test(q!
all : bar bar
bar : ;
q%x : ;
.SECONDEXPANSION:
a%l: q1x $$+ q2x ; @echo '$+'
!,
                  '', "q1x bar bar q2x bar bar\n");


# Allow patsubst shorthand in second expansion context.
# Requires the colon to be quoted.  Savannah bug #16545
run_make_test(q!
.PHONY: foo.bar
.SECONDEXPANSION:
foo: $$(@\\:%=%.bar); @echo '$^'
!,
              '', "foo.bar\n");

# SV 54549 : Ensure we don't free used variable_sets
run_make_test(q!
foo: -lcat

# Removing second expansion prevents segfault
.SECONDEXPANSION:
foo: $$@.o ;

# Having an empty command here prevents segfault unless,
# the environment is empty. `env -i make foo`
# MFLAGS=-w or MAKEFLAGS=-w `env MFLAGS=-w make foo`
# libcat.a target calls an extra command, `@true \n @touch $@`
# odd.
%.o: ; @true

# Having an empty command prevents segfault.
-l%: lib%.a ; @true

# Not creating libcat.a here prevents segfault,
libcat.a: ; @touch $@
!,
              '', q!#MAKEFILE#:16: recipe was specified for file '-lcat' at #MAKEFILE#:16,
#MAKEFILE#:16: but '-lcat' is now considered the same file as 'libcat.a'
#MAKEFILE#:16: recipe for '-lcat' will be ignored in favor of the one for 'libcat.a'!);
unlink('libcat.a');

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

.PHONY: biz baz
biz: baz ;
biz: $$(info $$<)
!,
              '', "baz\n#MAKE#: Nothing to be done for 'biz'.\n");


# sv 60659. Second expansion of automatic variables inside a function in the
# prerequisite list.
# $$@ expands to the target in the 1st and following rules.
# $$<,$$^,$$+,$$|,$$?,$$*,$$% 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.


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


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


# subtest 3. Grouped targets in explicit rules. 1st rule.
run_make_test(q!
.SECONDEXPANSION:
all: 15.x
15.x 1.x&: 5.z 6.z 5.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*,%=$$%) ;
%.z: ;
!, '',
"@=15.x,<=,^=,+=,|=,?=,*=,%=
@=1.x,<=,^=,+=,|=,?=,*=,%=
#MAKE#: Nothing to be done for 'all'.\n");


# subtest 4. Grouped targets in explicit 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&: 9.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*,%=$$%) ;
%.z: ;
!, '',
"@=15.x,<=5.z,^=5.z 6.z,+=5.z 6.z 5.z,|=7.z 8.z,?=,*=,%=
@=1.x,<=1.z,^=1.z 2.z,+=1.z 2.z 2.z,|=3.z 4.z,?=,*=,%=
#MAKE#: Nothing to be done for 'all'.\n");


# Double colon rules.
# Because each double colon rule is independent of the other double colon rules
# for the same target, each automatic variable in the prerequisite list, other
# than $$@, second expands to the empty string in any rule, 1st, 2nd or later.

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


# subtest 6. 2nd double colon 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:: 9.z $$(info @=$$@,<=$$<,^=$$^,+=$$+,|=$$|,?=$$?,*=$$*,%=$$%) ;
%.z: ;
!, '',
"@=15.x,<=,^=,+=,|=,?=,*=,%=
@=1.x,<=,^=,+=,|=,?=,*=,%=
#MAKE#: Nothing to be done for 'all'.\n");


# sv 62324.
# Integrity self check.
run_make_test(q!
.SECONDEXPANSION:
all: bye.x
bye.x: $$(firstword bye.1;
!, '', "#MAKEFILE#:4: *** unterminated call to function 'firstword': missing ')'.  Stop.", 512);

unlink('hello.tsk', 'test.o', 'bye.tsk', 'hello.o', 'hello.h', 'hello.q', 'bye.c', 'bye.o');

# sv 62706.
# Test that makes avoids second expanding prerequisites of the targets which
# are not built.
# Here, hello.tsk is built and its prerequisites are second expanded.
# bye.tsk is not built and its prerequisites are not second expanded.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk: hello.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
bye.tsk: bye.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
hello.o: $$(info second expansion of $$@ prereqs); $(info $@)
bye.o: $$(info second expansion of $$@ prereqs); $(info $@)
!, 'hello.tsk',
"second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Multiple rules per target.
run_make_test(q!
.SECONDEXPANSION:

all: hello.tsk
dep1:=hello.o
dep2:=hello.h
hello.tsk: $$(dep1)
hello.tsk: $$(dep2); $(info $@ from $^)
hello.o:; $(info $@)
hello.h:; $(info $@)
!, 'hello.tsk',
"hello.h
hello.o
hello.tsk from hello.h hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Multiple targets per rule.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk bye.tsk: hello.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
bye.tsk: bye.o $$(info second expansion of $$@ prereqs)
hello.o: $$(info second expansion of $$@ prereqs); $(info $@)
bye.o: $$(info second expansion of $$@ prereqs); $(info $@)
!, 'hello.tsk',
"second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Grouped targets.
run_make_test(q!
.SECONDEXPANSION:
world.tsk: world.o $$(info 1 second expansion of $$@ prereqs)
hello.tsk world.tsk &: hello.o $$(info 2 second expansion of $$@ prereqs); $(info $@ from $<)
bye.tsk: bye.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
hello.o: $$(info second expansion of $$@ prereqs); $(info $@)
world.o: $$(info second expansion of $$@ prereqs); $(info $@)
bye.o: $$(info second expansion of $$@ prereqs); $(info $@)
!, 'hello.tsk',
"2 second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
2 second expansion of world.tsk prereqs
1 second expansion of world.tsk prereqs
second expansion of world.o prereqs
world.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Order only.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk:| hello.o $$(info second expansion of $$@ prereqs); $(info $@ from $|)
bye.tsk:| bye.o $$(info second expansion of $$@ prereqs); $(info $@ from $|)
hello.o:| $$(info second expansion of $$@ prereqs); $(info $@)
bye.o:| $$(info second expansion of $$@ prereqs); $(info $@)
!, 'hello.tsk',
"second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Double colon. 1 rule per target.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk:: hello.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
bye.tsk:: bye.o $$(info second expansion of $$@ prereqs); $(info $@ from $<)
hello.o:: $$(info second expansion of $$@ prereqs); $(info $@)
bye.o:: $$(info second expansion of $$@ prereqs); $(info $@)
!, 'hello.tsk',
"second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Double colon. 2 rules per targets.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk:: hello.o $$(info 1 second expansion of $$@ prereqs); $(info 1 $@ from $<)
hello.tsk:: hello.o $$(info 2 second expansion of $$@ prereqs); $(info 2 $@ from $<)
bye.tsk:: bye.o $$(info 1 second expansion of $$@ prereqs); $(info 1 $@ from $<)
bye.tsk:: bye.o $$(info 2 second expansion of $$@ prereqs); $(info 2 $@ from $<)
hello.o:: $$(info 1 second expansion of $$@ prereqs); $(info 1 $@)
hello.o:: $$(info 2 second expansion of $$@ prereqs); $(info 2 $@)
bye.o:: $$(info 1 second expansion of $$@ prereqs); $(info 1 $@)
bye.o:: $$(info 2 second expansion of $$@ prereqs); $(info 2 $@)
!, 'hello.tsk',
"1 second expansion of hello.tsk prereqs
1 second expansion of hello.o prereqs
1 hello.o
2 second expansion of hello.o prereqs
2 hello.o
1 hello.tsk from hello.o
2 second expansion of hello.tsk prereqs
2 hello.tsk from hello.o
#MAKE#: 'hello.tsk' is up to date.\n");

# sv 62706.
# Test that the prerequisites of 'hello.tsk' are second expanded once.
run_make_test(q!
.SECONDEXPANSION:
all: hello.tsk hello.q
hello.tsk: hello.o $$(info second expansion of $$@ prereqs); $(info $@ from $^)
hello.o: $$(info second expansion of $$@ prereqs); $(info $@)
hello.q: hello.tsk $$(info second expansion of $$@ prereqs); $(info $@ from $^)
!, '',
"second expansion of hello.tsk prereqs
second expansion of hello.o prereqs
hello.o
hello.tsk from hello.o
second expansion of hello.q prereqs
hello.q from hello.tsk
#MAKE#: Nothing to be done for 'all'.\n");

# sv 62706.
# Merge vpath file and local file.
# Test that both sets of prerequisites from 'hello.c' rule and from
# 'src/hello.c' rule are second expanded.
run_make_test(q!
.SECONDEXPANSION:
vpath hello.c src
all: hello.c; $(info $@ from $^)
hello.c: $$(info second expansion of hello.c prereqs); $(info 1 $@)
src/hello.c: $$(info second expansion of src/hello.c prereqs); $(info 2 $@)
!, '',
"#MAKEFILE#:5: recipe was specified for file 'hello.c' at #MAKEFILE#:5,
#MAKEFILE#:5: but 'hello.c' is now considered the same file as 'src/hello.c'
#MAKEFILE#:5: recipe for 'hello.c' will be ignored in favor of the one for 'src/hello.c'
second expansion of src/hello.c prereqs
second expansion of hello.c prereqs
2 src/hello.c
all from src/hello.c
#MAKE#: 'all' is up to date.\n");

# sv 62706.
# .DEFAULT.
run_make_test(q!
.SECONDEXPANSION:
bye:=bye.c
all: hello.o
.DEFAULT: $$(info second expansion of prereqs of default recipe @ = $$@) ; $(info default recipe $@)
!, '',
"default recipe hello.o
#MAKE#: Nothing to be done for 'all'.\n");

unlink('hello.1');

# sv 62706.
# No side effects from second expansion of unrelated rules.
run_make_test(q!
.SECONDEXPANSION:
hello.tsk:; exit 1
unrelated: $$(shell touch hello.1);
!, '',
"exit 1
#MAKE#: *** [#MAKEFILE#:3: hello.tsk] Error 1\n", 512);

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


1;