Add script that reports unused macros/defines

source/script/find_unused_macros.pl

@@ -0,0 +1,33 @@
+#!/usr/bin/perl
+# Script that reads in configure and outputs the names of all the defines 
+# it defines that are used nowhere in the code
+
+# Arguments: C and H files
+
+my %defined,%used,%files;
+
+# First, make a list of defines in configure
+$in = shift;
+
+while($tmp = shift) { 
+	$files{$tmp} = $tmp;
+	open(FI, $tmp);
+	while(<FI>) { 
+		$line = $_;
+		$cur = "";
+		if(/^#define ([A-Za-z0-9_]+)/) {
+			$defined{$1} = $tmp;
+			$cur = $1;
+		}
+
+		$_ = $line;
+		while(/([A-Za-z0-9_]+)/sgm) { 
+			if($cur cmp $1) { $used{$1} = $tmp; }
+		}
+	}
+	close FI;
+}
+
+foreach(keys %defined) {
+	if(!$used{$_}) { print "$_\n"; }
+}