diff --git a/pdex/build.xml b/pdex/build.xml
index 214ee3320..f9b1e422f 100644
--- a/pdex/build.xml
+++ b/pdex/build.xml
@@ -1,11 +1,43 @@
 <?xml version="1.0"?>
-<project name="Processing PDE" default="build">
+<project name="PDE X" default="build">
 
 	<property file="build.properties" />
 
+	<!-- Figure out the platform. -->
+	<condition property="platform" value="macosx">
+		<os family="mac" />
+	</condition>
+
+	<condition property="platform" value="windows">
+		<os family="windows" />
+	</condition>
+
+	<condition property="platform" value="linux">
+		<and>
+			<os family="unix" />
+			<not>
+				<os family="mac" />
+			</not>
+		</and>
+	</condition>
+
+	<!-- Figure out the platform-specific output directory. -->
+	<condition property="target.path" value="macosx/work/Processing.app/Contents/Java">
+		<os family="mac" />
+	</condition>
+
+	<condition property="target.path" value="linux/work">
+		<os family="unix" />
+	</condition>
+
+	<condition property="target.path" value="windows/work">
+		<os family="windows" />
+	</condition>
+
 	<target name="clean" description="Clean the build directories">
 		<delete dir="bin" />
 		<delete file="mode/${lib.name}.jar" />
+		<echo message="Platform is ${platform}." />
 	</target>
 
 	<target name="compile" description="Compile sources">
@@ -49,6 +81,7 @@
 		<jar basedir="bin" destfile="mode/${lib.name}.jar" />
 	</target>
 
+
 	<target name="install" depends="build" description="Quick install to sketchbook">
 		<copy todir="${sketchbook.location}/modes/${lib.name}/mode">
 			<fileset file="mode/${lib.name}.jar" />
@@ -86,7 +119,7 @@
 		</copy>
 
 		<copy todir="${bundle}">
-					<fileset file="keywords.txt" />
+			<fileset file="keywords.txt" />
 		</copy>
 		<copy todir="${bundle}">
 			<fileset file="mode.properties" />
@@ -97,12 +130,12 @@
 	</target>
 
 	<target name="package_zip" depends="package" description="Create zip file for distribution">
-	<property name="v" value="_v"/>
-	<property name="zipStr" value=".zip"/>
-	<zip destfile="${dist}/${lib.name}${v}${prettyVersion}${zipStr}"
+		<property name="v" value="_v"/>
+		<property name="zipStr" value=".zip"/>
+		<zip destfile="${dist}/${lib.name}${v}${prettyVersion}${zipStr}"
        basedir="${dist}/"
        excludes="**/.DS_Store"/>
-	</target>		
+	</target>
 
 	<target name="full_install" depends="package" description="Full install to sketchbook">
 		<delete dir="${sketchbook.location}/modes/${lib.name}" />