conditionals

make debug tool. You can use this tool to debug Makefile

#                                                                    -*-perl-*-
$description = "Check GNU make conditionals.";

$details = "Attempt various different flavors of GNU make conditionals.";

open(MAKEFILE,"> $makefile");

# The Contents of the MAKEFILE ...

print MAKEFILE <<'EOMAKE';
objects = foo.obj
arg1 = first
arg2 = second
arg3 = third
arg4 = cc
arg5 = second

all:
ifeq ($(arg1),$(arg2))
	@echo arg1 equals arg2
else
	@echo arg1 NOT equal arg2
endif

ifeq '$(arg2)' "$(arg5)"
	@echo arg2 equals arg5
else
	@echo arg2 NOT equal arg5
endif

ifneq '$(arg3)' '$(arg4)'
	@echo arg3 NOT equal arg4
else
	@echo arg3 equal arg4
endif

ifndef undefined
	@echo variable is undefined
else
	@echo variable undefined is defined
endif
ifdef arg4
	@echo arg4 is defined
else
	@echo arg4 is NOT defined
endif

EOMAKE

close(MAKEFILE);

&run_make_with_options($makefile,"",&get_logfile,0);

$answer = "arg1 NOT equal arg2
arg2 equals arg5
arg3 NOT equal arg4
variable is undefined
arg4 is defined
";

&compare_output($answer,&get_logfile(1));


# Test expansion of variables inside ifdef.

$makefile2 = &get_tmpfile;

open(MAKEFILE, "> $makefile2");

print MAKEFILE <<'EOF';

foo = 1

FOO = foo
F = f

DEF = no
DEF2 = no

ifdef $(FOO)
DEF = yes
endif

ifdef $(F)oo
DEF2 = yes
endif

all:; @echo DEF=$(DEF) DEF2=$(DEF2)

EOF

close(MAKEFILE)

&run_make_with_options($makefile2,"",&get_logfile,0);
$answer = "DEF=yes DEF2=yes\n";
&compare_output($answer,&get_logfile(1));


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