diff --git a/GPL/GnuDisassembler/.gitignore b/GPL/GnuDisassembler/.gitignore
new file mode 100644
index 0000000000..e5452ab8aa
--- /dev/null
+++ b/GPL/GnuDisassembler/.gitignore
@@ -0,0 +1 @@
+binutils-*
diff --git a/GPL/GnuDisassembler/README.txt b/GPL/GnuDisassembler/README.txt
index 1ffd524a36..3af72f4239 100644
--- a/GPL/GnuDisassembler/README.txt
+++ b/GPL/GnuDisassembler/README.txt
@@ -14,6 +14,12 @@ To build this extension for Linux or Mac OS X:
 	   If a different binutils distribution is used the build.gradle and/or buildGdis.gradle
 	   may require modification.
 	   
+	   The build requires the following packages to be installed:
+	     * flex
+	     * bison
+	     * texinfo
+	     * zlib1g-dev
+	   
 	2. Run gradle from the module's root directory (see top of build.gradle file for
 	   specific instructions). 
 
diff --git a/GPL/GnuDisassembler/build.gradle b/GPL/GnuDisassembler/build.gradle
index 0fd000d05e..2d51c81c4a 100644
--- a/GPL/GnuDisassembler/build.gradle
+++ b/GPL/GnuDisassembler/build.gradle
@@ -28,55 +28,56 @@
 //     directory once the extension has been installed/unpacked by Ghidra.  The binutils referenced 
 //     by the script below may be downloaded from the following URL:
 //
-//         https://ftp.gnu.org/pub/gnu/binutils/binutils-2.34.tar.bz2
+//         https://ftp.gnu.org/pub/gnu/binutils/binutils-2.36.tar.bz2
 //
 
-ext.binutils = "binutils-2.34"
+ext.binutils = "binutils-2.36"
 ext.binutilsDistro = "${binutils}.tar.bz2"
 
-ext.ghidraInstallDir = null;
-
-if (file("../gpl.gradle").exists()) {
-	// Module is located within the Ghidra GPL directory
-	ext.ghidraInstallDir = file("../..").getCanonicalPath()
-	ext.binutilsLocation = file("${ghidraInstallDir}/../ghidra.bin/GPL/${name}").getCanonicalPath()
-	apply from: file("../gpl.gradle").getCanonicalPath()
+// Find the GPL dir
+def gplDir = null;
+if (file("../gpl.gradle").exists()) { 
+	gplDir = file("..").getCanonicalPath()
 }
 else {
-	// various module placements for Ghidra installations
-	ext.binutilsLocation = projectDir
-	if (file("../../../GPL/gpl.gradle").exists()) {
-		// Handle GPL extension install within Ghidra Extensions directory
-		ext.ghidraInstallDir = file("../../..").getCanonicalPath()
+	// Module lives disconnected from the GPL directory, which it will need to build.
+	// Find a Ghidra installation directory and use its GPL directory.
+	if (file("../../Extensions").exists() && file("../../../GPL/gpl.gradle").exists()) {
+		// Module is installed within a Ghidra installation (i.e, ghidra/Ghidra/Extensions)
+		gplDir = file("../../../GPL").getCanonicalPath()
 	}
 	else {
-		// Handle extension install outside of Ghidra installation - must specify Ghidra install path
+		// Module is in an unknown location (likely outside of Ghidra). 
+		// Rely on the GHIDRA_INSTALL_DIR property being set.
+		def ghidraInstallDir = null;
 		if (System.env.GHIDRA_INSTALL_DIR) {
-			ext.ghidraInstallDir = System.env.GHIDRA_INSTALL_DIR
+			ghidraInstallDir = System.env.GHIDRA_INSTALL_DIR
 		}
 		else if (project.hasProperty("GHIDRA_INSTALL_DIR")) {
-			ext.ghidraInstallDir = project.getProperty("GHIDRA_INSTALL_DIR")
+			ghidraInstallDir = project.getProperty("GHIDRA_INSTALL_DIR")
 		}
-	}
-	if (ghidraInstallDir) {
+		else {
+			throw new GradleException("GHIDRA_INSTALL_DIR is not defined!")
+		}
+		
 		if (ghidraInstallDir.replace("\\","/").endsWith("/")) {
-			ext.ghidraInstallDir = ghidraInstallDir.substring(0, ghidraInstallDir.length()-1)
+			ghidraInstallDir = ghidraInstallDir.substring(0, ghidraInstallDir.length()-1)
 		}
+		gplDir = file("${ghidraInstallDir}/GPL")
 		println "Building with Ghidra installation at $ghidraInstallDir"
-		apply from: new File(ghidraInstallDir).getCanonicalPath() + "/GPL/gpl.gradle"
-	}
-	else {
-		throw new GradleException("GHIDRA_INSTALL_DIR is not defined!")
 	}
 }
 
+// If we see other projects, we are packaging this extension for distribution
 if (findProject(':Generic') != null) {
-	// Handle integrated Ghidra build - do not build gdis native
+	// Package extension
 	apply from: "$rootProject.projectDir/gradle/distributableGPLExtension.gradle"
 	delete file("build/os"); // remove any prior build of gdis
 }
 else {
-	apply from: "${ghidraInstallDir}/GPL/nativeBuildProperties.gradle"
+	// Build GPL extension (gdis)
+	apply from: "${gplDir}/gpl.gradle"
+	apply from: "${gplDir}/nativeBuildProperties.gradle"
 	apply from: "buildGdis.gradle"
 }
 
diff --git a/GPL/GnuDisassembler/buildGdis.gradle b/GPL/GnuDisassembler/buildGdis.gradle
index d145467092..9be9c9459c 100644
--- a/GPL/GnuDisassembler/buildGdis.gradle
+++ b/GPL/GnuDisassembler/buildGdis.gradle
@@ -1,17 +1,12 @@
 /* ###
  * IP: Public Domain
  */
-/*******************************************************************************************
- * build.gradle file that applies this script must define two properties
- *     1) binutilsLocation  - the folder where the original binutils.zip lives
- *     2) binutilsPrebuiltPath - the folder where the custom prebuilt binutils lives or will be built to
- *******************************************************************************************/
 
 defaultTasks 'assemble'
 
 ext.supportedPlatforms = ['osx64', 'linux64']
 
-ext.binutilsResource = new File("${binutilsLocation}/${binutils}.tar.bz2")
+ext.binutilsResource = new File("${projectDir}/${binutils}.tar.bz2")
 
 def binutilsUnpackDir = file("${project.buildDir}/${binutils}/")
 
@@ -19,8 +14,6 @@ def binutilsUnpackDir = file("${project.buildDir}/${binutils}/")
  *
  * For each supported platform build the following tasks:
  *        buildBinutils_<platform>			builds binutils for the platform
- *        packageBinutilsDev_<platform>      creates the built bundle of stuf we need to build gdis
- *        unpackBinutilsPrebuilt_<platform>  unpacks the built bundle to be used to build gdis
  *
  ******************************************************************************************/
  
diff --git a/GPL/GnuDisassembler/certification.manifest b/GPL/GnuDisassembler/certification.manifest
index 1692c70354..ffbc546607 100644
--- a/GPL/GnuDisassembler/certification.manifest
+++ b/GPL/GnuDisassembler/certification.manifest
@@ -1,6 +1,7 @@
 ##VERSION: 2.0
 ##MODULE IP: GPL 2
 ##MODULE IP: Public Domain
+.gitignore||Public Domain||||END|
 Module.manifest||Public Domain||||END|
 README.txt||Public Domain||||END|
 data/arm_test1.s||Public Domain||||END|
diff --git a/GPL/GnuDisassembler/extension.properties b/GPL/GnuDisassembler/extension.properties
index 5624d5632b..5b7d35b134 100644
--- a/GPL/GnuDisassembler/extension.properties
+++ b/GPL/GnuDisassembler/extension.properties
@@ -1,5 +1,5 @@
 name=GnuDisassembler
-description=GNU Disassembler.  Extension is delivered unbuilt.  See module README.txt for build instructions.
+description=GNU Disassembler.  Extension is delivered unbuilt.  See module README.txt for build instructions.  Depends on SleighDevTools.
 author=Ghidra Team
 createdOn=6/18/2019
 version=@extversion@
diff --git a/GPL/gpl.gradle b/GPL/gpl.gradle
index 4dafd461f7..8ca3271e77 100644
--- a/GPL/gpl.gradle
+++ b/GPL/gpl.gradle
@@ -14,7 +14,7 @@ project.ext.set("OS_NAMES", ["osx64", "win32", "win64", "linux64"])
  * Establish Visual Studio configuration environment for Windows native builds
  * NOTE: vsconfig.gradle path is relative to each GPL project module
  ****************************************************************************/
-apply from: "../vsconfig.gradle"
+apply from: buildscript.sourceFile.getParent() + "/vsconfig.gradle"
 
 /*********************************************************************************
  * Returns the local platform name.