diff --git a/src/java/org/lwjgl/opengl/GLCaps.java b/src/java/org/lwjgl/opengl/GLCaps.java
index ce39f3d1..01c86d25 100644
--- a/src/java/org/lwjgl/opengl/GLCaps.java
+++ b/src/java/org/lwjgl/opengl/GLCaps.java
@@ -108,6 +108,7 @@ public abstract class GLCaps {
 	public static boolean GL_ATI_texture_mirror_once;
 	public static boolean GL_ATI_vertex_array_object;
 	public static boolean GL_ATI_vertex_streams;
+	public static boolean GL_ATI_separate_stencil;
 	public static boolean GL_ATIX_point_sprites;
 	public static boolean GL_ATIX_texture_env_route;
 	public static boolean GL_HP_occlusion_test;
diff --git a/src/java/org/lwjgl/opengl/GLConstants.java b/src/java/org/lwjgl/opengl/GLConstants.java
index 364c2ead..adff4ef8 100644
--- a/src/java/org/lwjgl/opengl/GLConstants.java
+++ b/src/java/org/lwjgl/opengl/GLConstants.java
@@ -83,6 +83,7 @@ public interface GLConstants
 		ATITextureMirrorOnce,
 		ATIVertexArrayObject,
 		ATIVertexStreams,
+		ATISeparateStencil,
 		ATIXPointSprites,
 		ATIXTextureEnvRoute,
 		EXTAbgr,
diff --git a/src/java/org/lwjgl/opengl/ati/ATISeparateStencil.java b/src/java/org/lwjgl/opengl/ati/ATISeparateStencil.java
new file mode 100644
index 00000000..6dca39a1
--- /dev/null
+++ b/src/java/org/lwjgl/opengl/ati/ATISeparateStencil.java
@@ -0,0 +1,47 @@
+/* 
+ * Copyright (c) 2002 Lightweight Java Game Library Project
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are 
+ * met:
+ * 
+ * * Redistributions of source code must retain the above copyright 
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'Light Weight Java Game Library' nor the names of 
+ *   its contributors may be used to endorse or promote products derived 
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * Created by IntelliJ IDEA.
+ * User: nj
+ * Date: 12-08-2002
+ * Time: 15:31:14
+ * To change template for new interface use
+ * Code Style | Class Templates options (Tools | IDE Options).
+ */
+package org.lwjgl.opengl.ati;
+
+public interface ATISeparateStencil {
+	public static final int STENCIL_BACK_FUNC_ATI				= 0x8800;
+	public static final int STENCIL_BACK_FAIL_ATI				= 0x8801;
+	public static final int STENCIL_BACK_PASS_DEPTH_FAIL_ATI		= 0x8802;
+	public static final int STENCIL_BACK_PASS_DEPTH_PASS_ATI		= 0x8803;
+}
diff --git a/src/native/configure.in b/src/native/configure.in
index 014c92f5..c2f1bb91 100644
--- a/src/native/configure.in
+++ b/src/native/configure.in
@@ -51,8 +51,8 @@ if test "x$JAVA_HOME" = x; then
 else
   AC_MSG_RESULT($JAVA_HOME)
   JAVA_HOME="$JAVA_HOME"
-  CPPFLAGS="$CPPFLAGS -fno-rtti -fno-exceptions -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
-  CFLAGS="$CFLAGS -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
+  CPPFLAGS="$CPPFLAGS -D_DEBUG -fno-rtti -fno-exceptions -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
+  CFLAGS="$CFLAGS -D_DEBUG -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
 fi
 
 dnl Checks for libraries.