origin

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

#                                                                    -*-perl-*-

$description = "Test the origin function.";

$details = "This is a test of the origin function in gnu make.
This function will report on where a variable was
defined per the following list:

'undefined'            never defined
'default'              default definition
'environment'          environment var without -e
'environment override' environment var with    -e
'file'                 defined in makefile
'command line'         defined on the command line
'override'             defined by override in makefile
'automatic'            Automatic variable\n";

# On WIN32 systems, HOME is meaningless. SystemRoot should be defined
# though.  With DJGPP, HOME is not guaranteed to be defined.  Use DJDIR
# instead.
#
$homevar = (($port_type eq 'Windows') ? "SystemRoot"
	    : (($port_type eq 'DOS') ? "DJDIR"
	       : "HOME"));

open(MAKEFILE,"> $makefile");

print MAKEFILE <<EOF;
foo := bletch garf
auto_var = udef CC $homevar MAKE foo CFLAGS WHITE \@
av = \$(foreach var, \$(auto_var), \$(origin \$(var)) )
override WHITE := BLACK
all: auto
\t\@echo \$(origin undefined)
\t\@echo \$(origin CC)
\t\@echo \$(origin $homevar)
\t\@echo \$(origin MAKE)
\t\@echo \$(origin foo)
\t\@echo \$(origin CFLAGS)
\t\@echo \$(origin WHITE)
\t\@echo \$(origin \@)
auto :
\t\@echo \$(av)
EOF

close(MAKEFILE);

&run_make_with_options($makefile,
                      "-e WHITE=WHITE CFLAGS=",
                      &get_logfile);

# Create the answer to what should be produced by this Makefile
$answer = "undefined default environment default file command line override automatic
undefined
default
environment
default
file
command line
override
automatic\n";


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

1;