diff --git a/core/org.eclipse.cdt.core/ChangeLog b/core/org.eclipse.cdt.core/ChangeLog
new file mode 100644
index 00000000000..6f34ca3ded3
--- /dev/null
+++ b/core/org.eclipse.cdt.core/ChangeLog
@@ -0,0 +1,14 @@
+2002-10-13
+
+	Boosting the compiler error level to get unused imports.
+
+	* model/../internal/core/model/ArchiveContainer.java:
+	* model/../core/model/BinaryContainer.java:
+	* model/../core/model/CElementDelta.java:
+	* model/../core/model/CModelManager.java:
+	* model/../core/model/CResourceInfo.java:
+	Remove unused imports.
+
+	* src/../core/resources/ACBuilder.java:
+	* src/../internal/core/CBuilder.java:
+	Remove unused imports.
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ArchiveContainer.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ArchiveContainer.java
index c6f69d498e7..cc1cacaf108 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ArchiveContainer.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ArchiveContainer.java
@@ -5,14 +5,12 @@ package org.eclipse.cdt.internal.core.model;
  * All Rights Reserved.
  */
  
-import org.eclipse.core.resources.IFile;
-import org.eclipse.core.resources.IFolder;
-import org.eclipse.core.resources.IProject;
-import org.eclipse.core.resources.IResource;
-
 import org.eclipse.cdt.core.model.IArchive;
 import org.eclipse.cdt.core.model.IArchiveContainer;
 import org.eclipse.cdt.core.model.ICElement;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IFolder;
+import org.eclipse.core.resources.IProject;
 
 public class ArchiveContainer extends Parent implements IArchiveContainer {
 
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/BinaryContainer.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/BinaryContainer.java
index 8e22ff3046a..b3141a9f344 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/BinaryContainer.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/BinaryContainer.java
@@ -5,6 +5,10 @@ package org.eclipse.cdt.internal.core.model;
  * All Rights Reserved.
  */
  
+import org.eclipse.cdt.core.model.CoreModel;
+import org.eclipse.cdt.core.model.IBinary;
+import org.eclipse.cdt.core.model.IBinaryContainer;
+import org.eclipse.cdt.core.model.ICElement;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
@@ -12,12 +16,6 @@ import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IResourceVisitor;
 import org.eclipse.core.runtime.CoreException;
 
-import org.eclipse.cdt.core.model.CoreModel;
-import org.eclipse.cdt.core.model.IBinary;
-import org.eclipse.cdt.core.model.IBinaryContainer;
-import org.eclipse.cdt.core.model.ICElement;
-import org.eclipse.cdt.core.model.ICRoot;
-
 public class BinaryContainer extends Parent implements IBinaryContainer {
 
 	CProject cProject;
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CElementDelta.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CElementDelta.java
index f884e35dcd2..5e172a7e080 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CElementDelta.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CElementDelta.java
@@ -6,7 +6,6 @@ package org.eclipse.cdt.internal.core.model;
  */
 import java.util.ArrayList;
 
-import org.eclipse.cdt.core.model.CModelException;
 import org.eclipse.cdt.core.model.IArchive;
 import org.eclipse.cdt.core.model.IBinary;
 import org.eclipse.cdt.core.model.ICElement;
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CModelManager.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CModelManager.java
index bcd7540c512..1d2f8848b0c 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CModelManager.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CModelManager.java
@@ -25,7 +25,6 @@ import org.eclipse.cdt.core.model.ICProject;
 import org.eclipse.cdt.core.model.ICResource;
 import org.eclipse.cdt.core.model.ICRoot;
 import org.eclipse.cdt.core.model.IElementChangedListener;
-import org.eclipse.cdt.core.model.IParent;
 import org.eclipse.cdt.utils.elf.AR;
 import org.eclipse.cdt.utils.elf.Elf;
 import org.eclipse.core.resources.IFile;
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CResourceInfo.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CResourceInfo.java
index 3877ddd6f58..129ec8720d7 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CResourceInfo.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/CResourceInfo.java
@@ -6,7 +6,6 @@ package org.eclipse.cdt.internal.core.model;
  */
 
 import org.eclipse.cdt.core.model.ICElement;
-import org.eclipse.cdt.core.model.IParent;
 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/resources/ACBuilder.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/resources/ACBuilder.java
index 1a3eb3882a7..1b0eabaf1ae 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/resources/ACBuilder.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/resources/ACBuilder.java
@@ -6,15 +6,14 @@ package org.eclipse.cdt.core.resources;
  */
 
 
-import org.eclipse.cdt.core.*;
 import org.eclipse.cdt.core.CCorePlugin;
 import org.eclipse.cdt.core.IMarkerGenerator;
 import org.eclipse.cdt.core.model.ICModelMarker;
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.resources.IncrementalProjectBuilder;
-import org.eclipse.core.resources.IResource;
-import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.resources.IMarker;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IncrementalProjectBuilder;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
 
 public abstract class ACBuilder extends IncrementalProjectBuilder implements IMarkerGenerator {
 
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CBuilder.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CBuilder.java
index 0b34be6315d..a1a1916875e 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CBuilder.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/core/CBuilder.java
@@ -11,10 +11,18 @@ import java.util.Enumeration;
 import java.util.Map;
 import java.util.Properties;
 
+import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.CProjectNature;
+import org.eclipse.cdt.core.CommandLauncher;
+import org.eclipse.cdt.core.ConsoleOutputStream;
+import org.eclipse.cdt.core.model.ICModelMarker;
+import org.eclipse.cdt.core.resources.ACBuilder;
+import org.eclipse.cdt.core.resources.IConsole;
+import org.eclipse.cdt.core.resources.MakeUtil;
+import org.eclipse.cdt.internal.errorparsers.ErrorParserManager;
 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
-import org.eclipse.core.resources.IResourceDelta;
 import org.eclipse.core.resources.IWorkspace;
 import org.eclipse.core.resources.IncrementalProjectBuilder;
 import org.eclipse.core.runtime.CoreException;
@@ -24,13 +32,6 @@ import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.SubProgressMonitor;
 
-import org.eclipse.cdt.core.model.ICModelMarker;
-import org.eclipse.cdt.core.resources.ACBuilder;
-import org.eclipse.cdt.core.resources.IConsole;
-import org.eclipse.cdt.internal.errorparsers.ErrorParserManager;
-import org.eclipse.cdt.core.*;
-import org.eclipse.cdt.core.resources.*;
-
 
 
 public class CBuilder extends ACBuilder {
@@ -52,7 +53,6 @@ public class CBuilder extends ACBuilder {
 	 * @see IncrementalProjectBuilder#build
 	 */	
 	protected IProject[] build(int kind, Map args, IProgressMonitor monitor) throws CoreException {	
-		IResourceDelta delta= getDelta(getProject());
 		boolean isFullBuild= (kind == IncrementalProjectBuilder.FULL_BUILD);
 		if (isFullBuild) {
 			invokeMake(true, monitor);