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# -*-perl-*-
$description = "Test the eval function.";
$details = "This is a test of the eval function in GNU make.
This function will evaluate inline makefile syntax and incorporate the
results into its internal database.\n";
open(MAKEFILE,"> $makefile");
print MAKEFILE <<'EOF';
define Y
all:: ; @echo $AA
A = B
endef
X = $(eval $(value Y))
$(eval $(shell echo A = A))
$(eval $(Y))
$(eval A = C)
$(eval $(X))
EOF
close(MAKEFILE);
&run_make_with_options($makefile, "", &get_logfile);
# Create the answer to what should be produced by this Makefile
$answer = "AA\nBA\n";
&compare_output($answer,&get_logfile(1));
# Test to make sure defining variables when we have extra scope pushed works
# as expected.
$makefile2 = &get_tmpfile;
open(MAKEFILE,"> $makefile2");
print MAKEFILE <<'EOF';
VARS = A B
VARSET = $(1) = $(2)
$(foreach v,$(VARS),$(eval $(call VARSET,$v,$v)))
all: ; @echo A = $(A) B = $(B)
EOF
close(MAKEFILE);
&run_make_with_options($makefile2, "", &get_logfile);
# Create the answer to what should be produced by this Makefile
$answer = "A = A B = B\n";
&compare_output($answer,&get_logfile(1));
# Test to make sure eval'ing inside conditionals works properly
$makefile3 = &get_tmpfile;
open(MAKEFILE,"> $makefile3");
print MAKEFILE <<'EOF';
FOO = foo
all:: ; @echo it
define Y
all:: ; @echo worked
endef
ifdef BAR
$(eval $(Y))
endif
EOF
close(MAKEFILE);
&run_make_with_options($makefile3, "", &get_logfile);
$answer = "it\n";
&compare_output($answer,&get_logfile(1));
&run_make_with_options($makefile3, "BAR=1", &get_logfile);
$answer = "it\nworked\n";
&compare_output($answer,&get_logfile(1));
# TEST very recursive invocation of eval
$makefile3 = &get_tmpfile;
open(MAKEFILE,"> $makefile3");
print MAKEFILE <<'EOF';
..9 := 0 1 2 3 4 5 6 7 8 9
rev=$(eval res:=)$(foreach word,$1,$(eval res:=${word} ${res}))${res}
a:=$(call rev,${..9})
all: ; @echo '[$(a)]'
EOF
close(MAKEFILE);
&run_make_with_options($makefile3, "", &get_logfile);
$answer = "[ 9 8 7 6 5 4 3 2 1 0 ]\n";
&compare_output($answer,&get_logfile(1));
1;
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