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#!/usr/bin/perl
# Script that reads in Makefile.in and outputs the names of all
# used but undefined vars and all defined but unused vars
# Arguments:
# 1: Makefile.in
#
my %references;
my %defines;
# First, make a list of defines in configure
$in = shift;
open(IN, $in);
while(<IN>) {
my $line = $_;
while($line =~ /^\b([a-zA-Z0-9_][a-zA-Z0-9_]*)\b[ \t]*=.*/sgm) {
$defines{$1} = 1;
}
while($line =~ /\$\(([a-zA-Z0-9_][a-zA-Z0-9_]*)\)/sgm) {
$references{$1} = 1;
}
}
close IN;
print "##### DEFINED BUT UNUSED: #####\n";
foreach(%defines) {
# print $_." defined\n";
if ($_ != 1) {
if ($references{$_} != 1) {
print $_."\n";
}
}
}
print "##### USED BUT UNDEFINED: #####\n";
foreach(%references) {
if ($_ != 1) {
if ($defines{$_} != 1) {
print $_."\n";
}
}
}
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