Example perl script for building .net assemblies for use in Unity.

build.pl

#!/bin/usr/perl
use strict;
use File::Basename;
chdir (File::Spec->rel2abs (dirname($0)."/..")); # Modify for location of perl script

my $monoPath = "External/Mono/builds/monodistribution";

my @sourceDirs = (
	"Path/To/Source/*.cs",
	"Path/To/More/Source/*.cs"
);

my $targetAssemblyPath = "Path/To/AssetStoreTools.dll";
my $unityEnginePath = "Path/To/UnityEngine.dll";
my $unityEditorPath = "Path/To/UnityEditor.dll";

my $command = "$monoPath/bin/gmcs -d:DEBUG -debug+ -r:$unityEnginePath,$unityEditorPath -target:library -out:$targetAssemblyPath";

while (<@sourceDirs>)
{
	$command .= " $_";
}

system ($command) or die ("Unable to run gmcs");