diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/ManagedBuildManager.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/ManagedBuildManager.java
index 572730ff419..9da856c4818 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/ManagedBuildManager.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/ManagedBuildManager.java
@@ -57,6 +57,7 @@ import org.eclipse.cdt.core.parser.IScannerInfoChangeListener;
 import org.eclipse.cdt.core.parser.IScannerInfoProvider;
 import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
 import org.eclipse.cdt.core.settings.model.ICLanguageSettingEntry;
+import org.eclipse.cdt.core.settings.model.ICMultiConfigDescription;
 import org.eclipse.cdt.core.settings.model.ICProjectDescription;
 import org.eclipse.cdt.core.settings.model.ICProjectDescriptionManager;
 import org.eclipse.cdt.core.settings.model.extension.CConfigurationData;
@@ -81,6 +82,8 @@ import org.eclipse.cdt.managedbuilder.internal.core.ManagedBuildInfo;
 import org.eclipse.cdt.managedbuilder.internal.core.ManagedCommandLineGenerator;
 import org.eclipse.cdt.managedbuilder.internal.core.ManagedMakeMessages;
 import org.eclipse.cdt.managedbuilder.internal.core.ManagedProject;
+import org.eclipse.cdt.managedbuilder.internal.core.MultiConfiguration;
+import org.eclipse.cdt.managedbuilder.internal.core.MultiResourceInfo;
 import org.eclipse.cdt.managedbuilder.internal.core.Option;
 import org.eclipse.cdt.managedbuilder.internal.core.OptionCategory;
 import org.eclipse.cdt.managedbuilder.internal.core.OutputType;
@@ -3892,6 +3895,13 @@ public class ManagedBuildManager extends AbstractCExtension implements IScannerI
 	private static IConfiguration getConfigurationForDescription(ICConfigurationDescription cfgDes, boolean checkConsistance){
 		if(cfgDes == null)
 			return null;
+		
+		if (cfgDes instanceof ICMultiConfigDescription) {
+			ICMultiConfigDescription mcd = (ICMultiConfigDescription)cfgDes;
+			ICConfigurationDescription[] cfds = (ICConfigurationDescription[])mcd.getItems();
+			return new MultiConfiguration(cfds, mcd.getStringListMode());
+		}
+		
 		CConfigurationData cfgData = cfgDes.getConfigurationData();
 		if(cfgData instanceof BuildConfigurationData){
 			IConfiguration cfg = ((BuildConfigurationData)cfgData).getConfiguration();
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiConfiguration.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiConfiguration.java
index f7e6d1d5c06..3f8d117698b 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiConfiguration.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiConfiguration.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -10,9 +10,11 @@
  *******************************************************************************/
 package org.eclipse.cdt.managedbuilder.internal.core;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 
 import org.eclipse.cdt.core.CCorePlugin;
+import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
 import org.eclipse.cdt.core.settings.model.ICSourceEntry;
 import org.eclipse.cdt.core.settings.model.MultiItemsHolder;
 import org.eclipse.cdt.core.settings.model.extension.CBuildData;
@@ -35,6 +37,7 @@ import org.eclipse.cdt.managedbuilder.core.IResourceConfiguration;
 import org.eclipse.cdt.managedbuilder.core.IResourceInfo;
 import org.eclipse.cdt.managedbuilder.core.ITool;
 import org.eclipse.cdt.managedbuilder.core.IToolChain;
+import org.eclipse.cdt.managedbuilder.core.ManagedBuildManager;
 import org.eclipse.cdt.managedbuilder.envvar.IConfigurationEnvironmentVariableSupplier;
 import org.eclipse.cdt.managedbuilder.macros.IConfigurationBuildMacroSupplier;
 import org.eclipse.core.resources.IFile;
@@ -44,8 +47,8 @@ import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.PluginVersionIdentifier;
 
 /**
- * 
- *
+ * This class represents a set of configurations 
+ * to be edited simultaneously on property pages.
  */
 public class MultiConfiguration extends MultiItemsHolder implements
 		IMultiConfiguration {
@@ -58,6 +61,18 @@ public class MultiConfiguration extends MultiItemsHolder implements
 		setStringListMode(mode);
 	}
 	
+	public MultiConfiguration(ICConfigurationDescription[] cfds, int mode) {
+		this(cfds2cfs(cfds),mode);
+	}
+	
+	public static IConfiguration[] cfds2cfs(ICConfigurationDescription[] cfgds) {
+		IConfiguration[] cfs = new IConfiguration[cfgds.length];
+		for (int i=0; i<cfgds.length; i++)
+			cfs[i] = ManagedBuildManager.getConfigurationForDescription(cfgds[i]);
+		return cfs;
+	}
+	
+	
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.core.settings.model.MultiItemsHolder#getItems()
 	 */
@@ -76,7 +91,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#calculateTargetTool()
 	 */
 	public ITool calculateTargetTool() {
-		System.out.println("Bad multi access: MultiConfiguration.calculateTargetTool()");
+		System.out.println("Bad multi access: MultiConfiguration.calculateTargetTool()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -92,7 +107,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#createFileInfo(org.eclipse.core.runtime.IPath)
 	 */
 	public IFileInfo createFileInfo(IPath path) {
-		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(1)");
+		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(1)"); //$NON-NLS-1$
 		return null; // curr().createFileInfo(path);
 	}
 
@@ -100,7 +115,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#createFileInfo(org.eclipse.core.runtime.IPath, java.lang.String, java.lang.String)
 	 */
 	public IFileInfo createFileInfo(IPath path, String id, String name) {
-		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(3)");
+		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(3)"); //$NON-NLS-1$
 		return null; // curr().createFileInfo(path, id, name);
 	}
 
@@ -109,7 +124,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 */
 	public IFileInfo createFileInfo(IPath path, IFolderInfo base,
 			ITool baseTool, String id, String name) {
-		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(5)");
+		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(5)"); //$NON-NLS-1$
 		return null; // curr().createFileInfo(path, base, baseTool, id, name);
 	}
 
@@ -118,7 +133,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 */
 	public IFileInfo createFileInfo(IPath path, IFileInfo base, String id,
 			String name) {
-		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(4)");
+		System.out.println("Bad multi access: MultiConfiguration.createFileInfo(4)"); //$NON-NLS-1$
 		return null; // curr().createFileInfo(path, base, id, name);
 	}
 
@@ -126,7 +141,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#createFolderInfo(org.eclipse.core.runtime.IPath)
 	 */
 	public IFolderInfo createFolderInfo(IPath path) {
-		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo()");
+		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -134,7 +149,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#createFolderInfo(org.eclipse.core.runtime.IPath, java.lang.String, java.lang.String)
 	 */
 	public IFolderInfo createFolderInfo(IPath path, String id, String name) {
-		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo(3)");
+		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo(3)"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -143,7 +158,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 */
 	public IFolderInfo createFolderInfo(IPath path, IFolderInfo base,
 			String id, String name) {
-		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo(4)");
+		System.out.println("Bad multi access: MultiConfiguration.createFolderInfo(4)"); //$NON-NLS-1$
 		return null; // do nothing now
 	}
 
@@ -151,7 +166,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#createResourceConfiguration(org.eclipse.core.resources.IFile)
 	 */
 	public IResourceConfiguration createResourceConfiguration(IFile file) {
-		System.out.println("Bad multi access: MultiConfiguration.createResourceConfiguration()");
+		System.out.println("Bad multi access: MultiConfiguration.createResourceConfiguration()"); //$NON-NLS-1$
 		return null; // do nothing now
 	}
 
@@ -160,7 +175,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 */
 	public IToolChain createToolChain(IToolChain superClass, String Id,
 			String name, boolean isExtensionElement) {
-		System.out.println("Bad multi access: MultiConfiguration.createToolChain()");		
+		System.out.println("Bad multi access: MultiConfiguration.createToolChain()");		 //$NON-NLS-1$
 		return null; // do nothing
 	}
 
@@ -171,7 +186,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 			String sourceExtension, String[] flags, String outputFlag,
 			String outputPrefix, String outputName, String[] inputResources,
 			IPath inputLocation, IPath outputLocation) {
-		System.out.println("Bad multi access: MultiConfiguration.generateToolCommandLineInfo()");
+		System.out.println("Bad multi access: MultiConfiguration.generateToolCommandLineInfo()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -251,7 +266,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getBuildData()
 	 */
 	public CBuildData getBuildData() {
-		System.out.println("Strange multi access: MultiConfiguration.getBuildData()");
+		System.out.println("Strange multi access: MultiConfiguration.getBuildData()"); //$NON-NLS-1$
 		return curr().getBuildData();
 	}
 
@@ -296,7 +311,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getConfigurationData()
 	 */
 	public CConfigurationData getConfigurationData() {
-		System.out.println("Strange multi access: MultiConfiguration.getConfigurationData()");
+		System.out.println("Strange multi access: MultiConfiguration.getConfigurationData()"); //$NON-NLS-1$
 		return curr().getConfigurationData();
 	}
 
@@ -315,7 +330,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getEditableBuilder()
 	 */
 	public IBuilder getEditableBuilder() {
-		System.out.println("Strange multi access: MultiConfiguration.getEditableBuilder()");
+		System.out.println("Strange multi access: MultiConfiguration.getEditableBuilder()"); //$NON-NLS-1$
 		return curr().getEditableBuilder();
 	}
 
@@ -363,7 +378,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getFilteredTools()
 	 */
 	public ITool[] getFilteredTools() {
-		System.out.println("Strange multi access: MultiConfiguration.getFilteredTools()");
+		System.out.println("Strange multi access: MultiConfiguration.getFilteredTools()"); //$NON-NLS-1$
 		return new ITool[0];
 	}
 
@@ -449,7 +464,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getParent()
 	 */
 	public IConfiguration getParent() {
-		System.out.println("Bad multi access: MultiConfiguration.getParent()");
+		System.out.println("Bad multi access: MultiConfiguration.getParent()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -509,7 +524,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getProjectType()
 	 */
 	public IProjectType getProjectType() {
-		System.out.println("Strange multi access: MultiConfiguration.getProjectType()");
+		System.out.println("Strange multi access: MultiConfiguration.getProjectType()"); //$NON-NLS-1$
 		return curr().getProjectType();
 	}
 
@@ -517,7 +532,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getResourceConfiguration(java.lang.String)
 	 */
 	public IResourceConfiguration getResourceConfiguration(String path) {
-		System.out.println("Bad multi access: MultiConfiguration.getResourceConfiguration()");
+		System.out.println("Bad multi access: MultiConfiguration.getResourceConfiguration()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -525,7 +540,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getResourceConfigurations()
 	 */
 	public IResourceConfiguration[] getResourceConfigurations() {
-		System.out.println("Bad multi access: MultiConfiguration.getResourceConfigurations()");
+		System.out.println("Bad multi access: MultiConfiguration.getResourceConfigurations()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -533,15 +548,17 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getResourceInfo(org.eclipse.core.runtime.IPath, boolean)
 	 */
 	public IResourceInfo getResourceInfo(IPath path, boolean exactPath) {
-		System.out.println("Bad multi access: MultiConfiguration.getResourceInfo()");
-		return null;
+		IResourceInfo ris[] = new IResourceInfo[fCfgs.length];
+		for (int i=0; i<fCfgs.length; i++)
+			ris[i] = fCfgs[i].getResourceInfo(path, exactPath);
+		return new MultiResourceInfo(ris);
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getResourceInfoById(java.lang.String)
 	 */
 	public IResourceInfo getResourceInfoById(String id) {
-		System.out.println("Bad multi access: MultiConfiguration.getResourceInfoById()");
+		System.out.println("Bad multi access: MultiConfiguration.getResourceInfoById()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -549,23 +566,29 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getResourceInfos()
 	 */
 	public IResourceInfo[] getResourceInfos() {
-		System.out.println("Bad multi access: MultiConfiguration.getResourceInfos()");
-		return null; // curr().getResourceInfos();
+		ArrayList ri = new ArrayList();
+		for (int i=0; i<fCfgs.length; i++) {
+			IResourceInfo[] ris = fCfgs[i].getResourceInfos();
+			ri.addAll(Arrays.asList(ris));
+		}
+		return (IResourceInfo[])ri.toArray(new IResourceInfo[ri.size()]);
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getRootFolderInfo()
 	 */
 	public IFolderInfo getRootFolderInfo() {
-		System.out.println("Strange multi access: MultiConfiguration.getRootFolderInfo()");
-		return curr().getRootFolderInfo();
+		IFolderInfo ris[] = new IFolderInfo[fCfgs.length];
+		for (int i=0; i<fCfgs.length; i++)
+			ris[i] = fCfgs[i].getRootFolderInfo();
+		return new MultiFolderInfo(ris);
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getSourceEntries()
 	 */
 	public ICSourceEntry[] getSourceEntries() {
-		System.out.println("Bad multi access: MultiConfiguration.getSourceEntries()");
+		System.out.println("Bad multi access: MultiConfiguration.getSourceEntries()"); //$NON-NLS-1$
 		return new ICSourceEntry[0];
 	}
 
@@ -573,7 +596,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getTargetTool()
 	 */
 	public ITool getTargetTool() {
-		System.out.println("Bad multi access: MultiConfiguration.getTargetTool()");
+		System.out.println("Bad multi access: MultiConfiguration.getTargetTool()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -581,7 +604,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getTool(java.lang.String)
 	 */
 	public ITool getTool(String id) {
-		System.out.println("Bad multi access: MultiConfiguration.getTool()");
+		System.out.println("Bad multi access: MultiConfiguration.getTool()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -589,7 +612,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getToolChain()
 	 */
 	public IToolChain getToolChain() {
-		System.out.println("Bad multi access: MultiConfiguration.getToolChain()");
+		System.out.println("Bad multi access: MultiConfiguration.getToolChain()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -597,7 +620,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getToolCommand(org.eclipse.cdt.managedbuilder.core.ITool)
 	 */
 	public String getToolCommand(ITool tool) {
-		System.out.println("Strange multi access: MultiConfiguration.getToolCommand()");
+		System.out.println("Strange multi access: MultiConfiguration.getToolCommand()"); //$NON-NLS-1$
 		return EMPTY_STR;
 	}
 
@@ -605,7 +628,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getToolFromInputExtension(java.lang.String)
 	 */
 	public ITool getToolFromInputExtension(String sourceExtension) {
-		System.out.println("Bad multi access: MultiConfiguration.getToolFromInputExtension()");
+		System.out.println("Bad multi access: MultiConfiguration.getToolFromInputExtension()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -613,7 +636,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getToolFromOutputExtension(java.lang.String)
 	 */
 	public ITool getToolFromOutputExtension(String extension) {
-		System.out.println("Bad multi access: MultiConfiguration.getToolFromOutputExtension()");
+		System.out.println("Bad multi access: MultiConfiguration.getToolFromOutputExtension()"); //$NON-NLS-1$
 		return null;
 	}
 
@@ -621,7 +644,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getTools()
 	 */
 	public ITool[] getTools() {
-		System.out.println("Bad multi access: MultiConfiguration.getTools()");
+		System.out.println("Bad multi access: MultiConfiguration.getTools()"); //$NON-NLS-1$
 		return new ITool[0];
 	}
 
@@ -629,7 +652,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getToolsBySuperClassId(java.lang.String)
 	 */
 	public ITool[] getToolsBySuperClassId(String id) {
-		System.out.println("Bad multi access: MultiConfiguration.getToolsBySuperClassId()");
+		System.out.println("Bad multi access: MultiConfiguration.getToolsBySuperClassId()"); //$NON-NLS-1$
 		return new ITool[0];
 	}
 
@@ -637,7 +660,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#getUserObjects(java.lang.String)
 	 */
 	public String[] getUserObjects(String extension) {
-		System.out.println("Strange multi access: MultiConfiguration.getUserObjects()");
+		System.out.println("Strange multi access: MultiConfiguration.getUserObjects()"); //$NON-NLS-1$
 		return EMPTY_STR_ARRAY;
 	}
 
@@ -675,7 +698,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#isExtensionElement()
 	 */
 	public boolean isExtensionElement() {
-		System.out.println("Strange multi access: MultiConfiguration.isExtensionElement()");
+		System.out.println("Strange multi access: MultiConfiguration.isExtensionElement()"); //$NON-NLS-1$
 		return curr().isExtensionElement();
 	}
 
@@ -683,7 +706,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#isHeaderFile(java.lang.String)
 	 */
 	public boolean isHeaderFile(String ext) {
-		System.out.println("Strange multi access: MultiConfiguration.isHeaderFile()");
+		System.out.println("Strange multi access: MultiConfiguration.isHeaderFile()"); //$NON-NLS-1$
 		return curr().isHeaderFile(ext);
 	}
 
@@ -862,7 +885,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IConfiguration#setName(java.lang.String)
 	 */
 	public void setName(String name) {
-		System.out.println("Bad multi access: MultiConfiguration.setName()");
+		System.out.println("Bad multi access: MultiConfiguration.setName()"); //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
@@ -968,7 +991,7 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getBaseId()
 	 */
 	public String getBaseId() {
-		System.out.println("Strange multi access: MultiConfiguration.getBaseId()");
+		System.out.println("Strange multi access: MultiConfiguration.getBaseId()"); //$NON-NLS-1$
 		return curr().getBaseId();
 	}
 
@@ -976,14 +999,14 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getId()
 	 */
 	public String getId() {
-		return curr().getId() + "_etc";
+		return curr().getId() + "_etc"; //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getManagedBuildRevision()
 	 */
 	public String getManagedBuildRevision() {
-		System.out.println("Strange multi access: MultiConfiguration.getMngBuildRevision()");
+		System.out.println("Strange multi access: MultiConfiguration.getMngBuildRevision()"); //$NON-NLS-1$
 		 return curr().getManagedBuildRevision();
 	}
 
@@ -991,14 +1014,14 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getName()
 	 */
 	public String getName() {
-		return "Multiple configurations";
+		return "Multiple configurations"; //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getVersion()
 	 */
 	public PluginVersionIdentifier getVersion() {
-		System.out.println("Strange multi access: MultiConfiguration.getVersion()");
+		System.out.println("Strange multi access: MultiConfiguration.getVersion()"); //$NON-NLS-1$
 		return curr().getVersion();
 	}
 
@@ -1006,14 +1029,14 @@ public class MultiConfiguration extends MultiItemsHolder implements
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#setVersion(org.eclipse.core.runtime.PluginVersionIdentifier)
 	 */
 	public void setVersion(PluginVersionIdentifier version) {
-		System.out.println("Strange multi access: MultiConfiguration.setVersion()");
+		System.out.println("Strange multi access: MultiConfiguration.setVersion()"); //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObjectPropertiesContainer#getBuildProperties()
 	 */
 	public IBuildObjectProperties getBuildProperties() {
-		System.out.println("Strange multi access: MultiConfiguration.getBuildProperties()");
+		System.out.println("Strange multi access: MultiConfiguration.getBuildProperties()"); //$NON-NLS-1$
 		return curr().getBuildProperties();
 	}
 
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiFolderInfo.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiFolderInfo.java
new file mode 100644
index 00000000000..1a51fefac34
--- /dev/null
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiFolderInfo.java
@@ -0,0 +1,98 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Intel Corporation - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.cdt.managedbuilder.internal.core;
+
+import org.eclipse.cdt.core.settings.model.extension.CFolderData;
+import org.eclipse.cdt.managedbuilder.core.BuildException;
+import org.eclipse.cdt.managedbuilder.core.IFolderInfo;
+import org.eclipse.cdt.managedbuilder.core.IModificationStatus;
+import org.eclipse.cdt.managedbuilder.core.ITool;
+import org.eclipse.cdt.managedbuilder.core.IToolChain;
+
+/**
+ * This class holds a number of IFolderInfo objects
+ * delonging to different configurations when they 
+ * are edited simultaneously. 
+ */
+public class MultiFolderInfo extends MultiResourceInfo implements IFolderInfo {
+
+	public MultiFolderInfo(IFolderInfo[] ris) {
+		super(ris);
+		fRis = ris;
+	}
+	
+	public boolean buildsFileType(String srcExt) {
+		for (int i=0; i<fRis.length; i++)
+			if (! ((IFolderInfo)fRis[i]).buildsFileType(srcExt))
+				return false;
+		return true;
+	}
+
+	public IToolChain changeToolChain(IToolChain newSuperClass, String Id,
+			String name) throws BuildException {
+		IToolChain t = null;
+		for (int i=0; i<fRis.length; i++)
+			t = ((IFolderInfo)fRis[i]).changeToolChain(newSuperClass, Id, name);
+		return t;
+	}
+
+	public ITool[] getFilteredTools() {
+		return ((IFolderInfo)fRis[0]).getFilteredTools();
+	}
+
+	public CFolderData getFolderData() {
+		return ((IFolderInfo)fRis[0]).getFolderData();
+	}
+
+	public String getOutputExtension(String resourceExtension) {
+		return ((IFolderInfo)fRis[0]).getOutputExtension(resourceExtension);
+	}
+
+	public ITool getTool(String id) {
+		return ((IFolderInfo)fRis[0]).getTool(id);
+	}
+
+	public IToolChain getToolChain() {
+		return ((IFolderInfo)fRis[0]).getToolChain();	
+	}
+
+	public IModificationStatus getToolChainModificationStatus(ITool[] removed,
+			ITool[] added) {
+		return ((IFolderInfo)fRis[0]).getToolChainModificationStatus(removed, added);		
+	}
+
+	public ITool getToolFromInputExtension(String sourceExtension) {
+		return ((IFolderInfo)fRis[0]).getToolFromInputExtension(sourceExtension);
+	}
+
+	public ITool getToolFromOutputExtension(String extension) {
+		return ((IFolderInfo)fRis[0]).getToolFromOutputExtension(extension);
+	}
+
+	public ITool[] getToolsBySuperClassId(String id) {
+		return ((IFolderInfo)fRis[0]).getToolsBySuperClassId(id);
+	}
+
+	public boolean isHeaderFile(String ext) {
+		return ((IFolderInfo)fRis[0]).isHeaderFile(ext);
+	}
+
+	public boolean isToolChainCompatible(IToolChain ch) {
+		return ((IFolderInfo)fRis[0]).isToolChainCompatible(ch);
+	}
+
+	public void modifyToolChain(ITool[] removed, ITool[] added)
+			throws BuildException {
+		((IFolderInfo)fRis[0]).modifyToolChain(removed, added);
+	}
+
+}
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java
new file mode 100644
index 00000000000..376f41dd350
--- /dev/null
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/MultiResourceInfo.java
@@ -0,0 +1,352 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Intel Corporation - Initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.managedbuilder.internal.core;
+
+import org.eclipse.cdt.core.settings.model.MultiItemsHolder;
+import org.eclipse.cdt.core.settings.model.extension.CLanguageData;
+import org.eclipse.cdt.core.settings.model.extension.CResourceData;
+import org.eclipse.cdt.managedbuilder.core.BuildException;
+import org.eclipse.cdt.managedbuilder.core.IConfiguration;
+import org.eclipse.cdt.managedbuilder.core.IHoldsOptions;
+import org.eclipse.cdt.managedbuilder.core.IOption;
+import org.eclipse.cdt.managedbuilder.core.IResourceInfo;
+import org.eclipse.cdt.managedbuilder.core.ITool;
+import org.eclipse.cdt.managedbuilder.core.OptionStringValue;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.PluginVersionIdentifier;
+
+/**
+ * This class holds a number of IResourceInfo objects
+ * belonging to different configurations while they are
+ * edited simultaneously.
+ */
+public class MultiResourceInfo extends MultiItemsHolder implements
+		IResourceInfo {
+	private static final int MODE_BOOL = 0;
+	private static final int MODE_STR  = 1;
+	private static final int MODE_SAR  = 2;
+	private static final int MODE_OSV  = 3;
+	private static final int MODE_CMDLINE  = 4;
+	private static final int MODE_COMMAND  = 5;
+	
+	protected IResourceInfo[] fRis = null;
+	
+	public MultiResourceInfo(IResourceInfo[] ris) {
+		fRis = ris;
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#canExclude(boolean)
+	 */
+	public boolean canExclude(boolean exclude) {
+		for (int i=0; i<fRis.length; i++)
+			if (! fRis[i].canExclude(exclude))
+				return false;
+		return true;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getCLanguageDatas()
+	 */
+	public CLanguageData[] getCLanguageDatas() {
+		return fRis[0].getCLanguageDatas();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getKind()
+	 */
+	public int getKind() {
+		return fRis[0].getKind();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getParent()
+	 */
+	public IConfiguration getParent() {
+		return fRis[0].getParent();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getPath()
+	 */
+	public IPath getPath() {
+		return fRis[0].getPath();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getResourceData()
+	 */
+	public CResourceData getResourceData() {
+		System.out.println("Strange call: MultiResourceInfo.getResourceData()"); //$NON-NLS-1$
+		return fRis[0].getResourceData();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#getTools()
+	 */
+	public ITool[] getTools() {
+		System.out.println("Strange call: MultiResourceInfo.getTools()"); //$NON-NLS-1$
+		return fRis[0].getTools();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#isDirty()
+	 */
+	public boolean isDirty() {
+		for (int i=0; i<fRis.length; i++)
+			if (fRis[i].isDirty())
+				return true;
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#isExcluded()
+	 */
+	public boolean isExcluded() {
+		for (int i=0; i<fRis.length; i++)
+			if (fRis[i].isExcluded())
+				return true;
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#isExtensionElement()
+	 */
+	public boolean isExtensionElement() {
+		for (int i=0; i<fRis.length; i++)
+			if (fRis[i].isExtensionElement())
+				return true;
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#isSupported()
+	 */
+	public boolean isSupported() {
+		for (int i=0; i<fRis.length; i++)
+			if (fRis[i].isSupported())
+				return true;
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#isValid()
+	 */
+	public boolean isValid() {
+		for (int i=0; i<fRis.length; i++)
+			if (!fRis[i].isValid())
+				return false;
+		return true;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#needsRebuild()
+	 */
+	public boolean needsRebuild() {
+		for (int i=0; i<fRis.length; i++)
+			if (fRis[i].needsRebuild())
+				return true;
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setDirty(boolean)
+	 */
+	public void setDirty(boolean dirty) {
+		for (int i=0; i<fRis.length; i++)
+			fRis[i].setDirty(dirty);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setExclude(boolean)
+	 */
+	public void setExclude(boolean excluded) {
+		for (int i=0; i<fRis.length; i++)
+			fRis[i].setExclude(excluded);
+	}
+
+	private String getSuperClassId(IOption op) {
+		String s = null;
+		while (op != null){
+			s =  op.getId();
+			op = op.getSuperClass();
+		}
+		return s;
+	}
+	
+	public void setToolsCommand(ITool tool, String s) {
+		setTool(tool, s, MODE_COMMAND);		
+	}
+	
+	public void setCommandLinePattern(ITool tool, String s) {
+		setTool(tool, s, MODE_CMDLINE);
+	}
+	
+	private void setTool(ITool tool, String s, int mode) {
+		String ext = tool.getDefaultInputExtension();
+		for (int i=0; i<fRis.length; i++) {
+			ITool[] ts = fRis[i].getTools();
+			for (int j=0; j<ts.length; j++) {
+				if (ext != null && 
+						! ext.equals(ts[j].getDefaultInputExtension()))
+					continue;
+				switch (mode) {
+				case MODE_COMMAND:
+					ts[j].setToolCommand(s);
+					break;
+				case MODE_CMDLINE:
+					ts[j].setCommandLinePattern(s);
+					break;
+				}					
+			}
+		}
+	}
+	
+	private IOption setOption(IHoldsOptions parent, IOption option, Object value, int mode) 
+	throws BuildException {
+		IOption op = null;
+		String ext = parent instanceof ITool ? ((ITool)parent).getDefaultInputExtension() : null;
+		String sid = getSuperClassId(option);
+		for (int i=0; i<fRis.length; i++) {
+			ITool[] ts = fRis[i].getTools();
+			for (int j=0; j<ts.length; j++) {
+				if (ext != null && 
+						! ext.equals(ts[j].getDefaultInputExtension()))
+					continue;
+				IOption op2 = ts[j].getOptionBySuperClassId(sid);
+				if (op2 != null) {
+					switch (mode) {
+					case MODE_BOOL:	
+						op = fRis[i].setOption(ts[j], op2, ((Boolean)value).booleanValue());
+						break;
+					case MODE_STR:	
+						op = fRis[i].setOption(ts[j], op2, (String)value);
+						break;
+					case MODE_SAR:	
+						op = fRis[i].setOption(ts[j], op2, (String[])value);
+						break;
+					case MODE_OSV:	
+						op = fRis[i].setOption(ts[j], op2, (OptionStringValue[])value);
+						break;
+					}
+				}
+			}
+		}
+		return op;
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setOption(org.eclipse.cdt.managedbuilder.core.IHoldsOptions, org.eclipse.cdt.managedbuilder.core.IOption, boolean)
+	 */
+	public IOption setOption(IHoldsOptions parent, IOption option, boolean value)
+			throws BuildException {
+		return setOption(parent, option, new Boolean(value), MODE_BOOL);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setOption(org.eclipse.cdt.managedbuilder.core.IHoldsOptions, org.eclipse.cdt.managedbuilder.core.IOption, java.lang.String)
+	 */
+	public IOption setOption(IHoldsOptions parent, IOption option, String value)
+			throws BuildException {
+		return setOption(parent, option, value, MODE_STR);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setOption(org.eclipse.cdt.managedbuilder.core.IHoldsOptions, org.eclipse.cdt.managedbuilder.core.IOption, java.lang.String[])
+	 */
+	public IOption setOption(IHoldsOptions parent, IOption option,
+			String[] value) throws BuildException {
+		return setOption(parent, option, value, MODE_SAR);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setOption(org.eclipse.cdt.managedbuilder.core.IHoldsOptions, org.eclipse.cdt.managedbuilder.core.IOption, org.eclipse.cdt.managedbuilder.core.OptionStringValue[])
+	 */
+	public IOption setOption(IHoldsOptions parent, IOption option,
+			OptionStringValue[] value) throws BuildException {
+		return setOption(parent, option, value, MODE_OSV);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setPath(org.eclipse.core.runtime.IPath)
+	 */
+	public void setPath(IPath path) {
+		for (int i=0; i<fRis.length; i++)
+			fRis[i].setPath(path);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#setRebuildState(boolean)
+	 */
+	public void setRebuildState(boolean rebuild) {
+		for (int i=0; i<fRis.length; i++)
+			fRis[i].setRebuildState(rebuild);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IResourceInfo#supportsBuild(boolean)
+	 */
+	public boolean supportsBuild(boolean managed) {
+		return fRis[0].supportsBuild(managed);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getBaseId()
+	 */
+	public String getBaseId() {
+		return fRis[0].getBaseId();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getId()
+	 */
+	public String getId() {
+		return fRis[0].getId();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getManagedBuildRevision()
+	 */
+	public String getManagedBuildRevision() {
+		return fRis[0].getManagedBuildRevision();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getName()
+	 */
+	public String getName() {
+		return fRis[0].getName();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#getVersion()
+	 */
+	public PluginVersionIdentifier getVersion() {
+		return fRis[0].getVersion();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.cdt.managedbuilder.core.IBuildObject#setVersion(org.eclipse.core.runtime.PluginVersionIdentifier)
+	 */
+	public void setVersion(PluginVersionIdentifier version) {
+		for (int i=0; i<fRis.length; i++)
+			fRis[i].setVersion(version);
+	}
+
+	public Object[] getItems() {
+		return fRis;
+	}
+
+	public boolean isRoot() {
+		return ((ResourceInfo)fRis[0]).isRoot();
+	}
+
+}
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/OptionCategory.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/OptionCategory.java
index 0cbee9c875f..d2cf63482ba 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/OptionCategory.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/OptionCategory.java
@@ -263,7 +263,12 @@ public class OptionCategory extends BuildObject implements IOptionCategory {
 	public Object[][] getOptions(IResourceInfo resinfo, IHoldsOptions optionHolder) {
 		IHoldsOptions[] optionHolders = new IHoldsOptions[1];
 		optionHolders[0] = optionHolder;
-		return getOptions(optionHolders, ((ResourceInfo)resinfo).isRoot() ? FILTER_PROJECT : FILTER_FILE);
+		boolean isRoot = false;
+		if (resinfo instanceof ResourceInfo)
+			isRoot = ((ResourceInfo)resinfo).isRoot();
+		else if (resinfo instanceof MultiResourceInfo)
+			isRoot = ((MultiResourceInfo)resinfo).isRoot();
+		return getOptions(optionHolders, isRoot ? FILTER_PROJECT : FILTER_FILE);
 	}
 		
 	/* (non-Javadoc)
diff --git a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/AbstractCBuildPropertyTab.java b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/AbstractCBuildPropertyTab.java
index 086eb40c59c..25d2a2b45cc 100644
--- a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/AbstractCBuildPropertyTab.java
+++ b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/AbstractCBuildPropertyTab.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -49,10 +49,7 @@ public abstract class AbstractCBuildPropertyTab extends AbstractCPropertyTab {
 	public IConfiguration getCfg(ICConfigurationDescription cfgd) {
 		if (cfgd instanceof ICMultiConfigDescription) {
 			ICConfigurationDescription[] cfds = (ICConfigurationDescription[])((ICMultiConfigDescription)cfgd).getItems();
-			IConfiguration[] cfs = new IConfiguration[cfds.length];
-			for (int i=0; i<cfds.length; i++)
-				cfs[i] = ManagedBuildManager.getConfigurationForDescription(cfds[i]);
-			return new MultiConfiguration(cfs, 9);
+			return new MultiConfiguration(cfds, 9);
 		} else 
 			return ManagedBuildManager.getConfigurationForDescription(cfgd);
 	}
diff --git a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/BuildToolSettingUI.java b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/BuildToolSettingUI.java
index 5bc93018eca..3d3ed602e37 100644
--- a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/BuildToolSettingUI.java
+++ b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/BuildToolSettingUI.java
@@ -22,6 +22,7 @@ import org.eclipse.cdt.managedbuilder.core.BuildException;
 import org.eclipse.cdt.managedbuilder.core.IOption;
 import org.eclipse.cdt.managedbuilder.core.IResourceInfo;
 import org.eclipse.cdt.managedbuilder.core.ITool;
+import org.eclipse.cdt.managedbuilder.internal.core.MultiResourceInfo;
 import org.eclipse.cdt.ui.newui.AbstractCPropertyTab;
 import org.eclipse.cdt.ui.newui.MultiLineTextFieldEditor;
 import org.eclipse.cdt.ui.newui.UIMessages;
@@ -472,118 +473,7 @@ public class BuildToolSettingUI extends AbstractToolSettingUI {
 	 * @see org.eclipse.jface.preference.FieldEditorPreferencePage#performOk()
 	 */
 	public boolean performOk() {
-		// Do the super-class thang
-		boolean result =  super.performOk();
-		/*
-		//parse and store all build options in the corresponding preference store
-		//parseAllOptions();
-
-		// Write the preference store values back to the build model
-		IOptionCategory clonedCategory = (IOptionCategory)fTool;
-		Object[][] clonedOptions;
-		clonedOptions = clonedCategory.getOptions(cfg, clonedTool);
-
-		if ( clonedOptions == null)
-			return true;
-		
-		for (int i = 0; i < clonedOptions.length; i++) {
-			ITool clonedTool = (ITool)clonedOptions[i][0];
-			if (clonedTool == null) break;	//  The array may not be full
-			IOption clonedOption = (IOption)clonedOptions[i][1];
-			
-			try {
-				// Transfer value from preference store to options
-				IOption setOption = null;
-				switch (clonedOption.getValueType()) {
-					case IOption.BOOLEAN :
-						boolean boolVal = clonedOption.getBooleanValue();;
-//						setOption = ManagedBuildManager.setOption(realCfg, realTool, realOption, boolVal);
-						// Reset the preference store since the Id may have changed
-//						if (setOption != option) {
-//							getToolSettingsPrefStore().setValue(setOption.getId(), boolVal);
-//						}
-						break;
-					case IOption.ENUMERATED :
-						String enumVal = clonedOption.getStringValue();
-						String enumId = clonedOption.getEnumeratedId(enumVal);
-//						setOption = ManagedBuildManager.setOption(realCfg, realTool, realOption, 
-//							(enumId != null && enumId.length() > 0) ? enumId : enumVal);
-						// Reset the preference store since the Id may have changed
-//						if (setOption != option) {
-//							getToolSettingsPrefStore().setValue(setOption.getId(), enumVal);
-//						}
-						break;
-					case IOption.STRING :
-						String strVal = clonedOption.getStringValue();
-//						setOption = ManagedBuildManager.setOption(realCfg, realTool, realOption, strVal);
-						// Reset the preference store since the Id may have changed
-//						if (setOption != option) {
-//							getToolSettingsPrefStore().setValue(setOption.getId(), strVal);
-//						}
-						break;
-					case IOption.STRING_LIST :
-					case IOption.INCLUDE_PATH :
-					case IOption.PREPROCESSOR_SYMBOLS :
-					case IOption.LIBRARIES :
-					case IOption.OBJECTS :
-//						String listStr = getToolSettingsPreferenceStore().getString(option.getId());
-						String[] listVal = (String[])((List)clonedOption.getValue()).toArray(new String[0]);
-//						setOption = ManagedBuildManager.setOption(realCfg, realTool, realOption, listVal);
-						// Reset the preference store since the Id may have changed
-//						if (setOption != option) {
-//							getToolSettingsPreferenceStore().setValue(setOption.getId(), listStr);
-//						}
-						break;
-					default :
-						break;
-				}
-
-				// Call an MBS CallBack function to inform that Settings related to Apply/OK button 
-				// press have been applied.
-				if (setOption == null)
-					setOption = realOption;
-// 				
-//				if (setOption.getValueHandler().handleValue(
-//						handler, 
-//						setOption.getOptionHolder(), 
-//						setOption,
-//						setOption.getValueHandlerExtraArgument(), 
-//						IManagedOptionValueHandler.EVENT_APPLY)) {
-//					// TODO : Event is handled successfully and returned true.
-//					// May need to do something here say log a message.
-//				} else {
-//					// Event handling Failed. 
-//				}
- 
-			} catch (BuildException e) {
-			} catch (ClassCastException e) {
-			}
-		}
-		
-		// Save the tool command if it has changed
-		// Get the actual value out of the field editor
-		String command = clonedTool.getToolCommand();
-		if (command.length() > 0 &&
-			(!command.equals(tool.getToolCommand()))) {
-			
-//			if ( isItResourceConfigPage ) {
-//				ManagedBuildManager.setToolCommand(realRcCfg, tool, command);
-//			} else {
-//				ManagedBuildManager.setToolCommand(realCfg, tool, command);
-//			}
-			
-		}
-		
-		// Save the tool command line pattern if it has changed
-		// Get the actual value out of the field editor
-		String commandLinePattern = clonedTool.getCommandLinePattern();
-		if (commandLinePattern.length() > 0 &&
-			(!commandLinePattern.equals(tool.getCommandLinePattern()))) {
-			tool.setCommandLinePattern(commandLinePattern);
-		}
-		*/
-		
-		return result;
+		return super.performOk();
 	}
 	
 	/**
@@ -603,12 +493,23 @@ public class BuildToolSettingUI extends AbstractToolSettingUI {
 		// allow superclass to handle as well
 		super.propertyChange(event);
 		
-		if(event.getSource() == commandStringField){
-			fTool.setToolCommand(commandStringField.getStringValue());
-			updateFields();
-		}
-		else if(event.getSource() == commandLinePatternField){
-			fTool.setCommandLinePattern(commandLinePatternField.getStringValue());
+		if (fInfo instanceof MultiResourceInfo) {
+			MultiResourceInfo mri = (MultiResourceInfo)fInfo;
+			if(event.getSource() == commandStringField){
+				mri.setToolsCommand(fTool, commandStringField.getStringValue());
+				updateFields();
+			}
+			else if(event.getSource() == commandLinePatternField){
+				mri.setCommandLinePattern(fTool, commandLinePatternField.getStringValue());
+			}
+		} else {
+			if(event.getSource() == commandStringField){
+				fTool.setToolCommand(commandStringField.getStringValue());
+				updateFields();
+			}
+			else if(event.getSource() == commandLinePatternField){
+				fTool.setCommandLinePattern(commandLinePatternField.getStringValue());
+			}
 		}
 	}
 }
diff --git a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/ToolSettingsTab.java b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/ToolSettingsTab.java
index e3b4b5fc92f..8480220cc12 100644
--- a/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/ToolSettingsTab.java
+++ b/build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/ui/properties/ToolSettingsTab.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -28,6 +28,7 @@ import org.eclipse.cdt.managedbuilder.core.IResourceConfiguration;
 import org.eclipse.cdt.managedbuilder.core.IResourceInfo;
 import org.eclipse.cdt.managedbuilder.core.ITool;
 import org.eclipse.cdt.managedbuilder.core.ManagedBuildManager;
+import org.eclipse.cdt.managedbuilder.internal.core.MultiConfiguration;
 import org.eclipse.cdt.managedbuilder.internal.macros.BuildMacroProvider;
 import org.eclipse.cdt.ui.newui.AbstractPage;
 import org.eclipse.cdt.ui.newui.PageLayout;
@@ -592,14 +593,9 @@ public class ToolSettingsTab extends AbstractCBuildPropertyTab implements IPrefe
 		}
 	
 	public void updateData(ICResourceDescription cfgd) {
-		if (page.isMultiCfg()) {
-			usercomp.setVisible(false);
-		} else {
-			usercomp.setVisible(true);
 			fInfo = getResCfg(cfgd);
 			setValues();
 			handleOptionSelection();
-		}
 	}
 
 	protected void performApply(ICResourceDescription src, ICResourceDescription dst) {
@@ -626,8 +622,10 @@ public class ToolSettingsTab extends AbstractCBuildPropertyTab implements IPrefe
 	public void updateTitle() {}
 
 	public boolean canBeVisible() {
-		if (page.isMultiCfg())
-			return false;
-		return getCfg().getBuilder().isManagedBuildOn();
+		IConfiguration cfg = getCfg();
+		if (cfg instanceof MultiConfiguration) 
+			return ((MultiConfiguration)cfg).isManagedBuildOn();
+		else	
+			return cfg.getBuilder().isManagedBuildOn();
 	}
 }
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
index 4621d54ea26..7e45991941b 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/settings/model/MultiResourceDescription.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -52,7 +52,7 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 	 * @see org.eclipse.cdt.core.settings.model.ICResourceDescription#getParentFolderDescription()
 	 */
 	public ICFolderDescription getParentFolderDescription() {
-		System.out.println("Bad multi access: MultiResourceDescription.getParentFolderDescription()");
+		System.out.println("Bad multi access: MultiResourceDescription.getParentFolderDescription()"); //$NON-NLS-1$
 		throw new UnsupportedOperationException();
 	}
 
@@ -60,7 +60,13 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 	 * @see org.eclipse.cdt.core.settings.model.ICResourceDescription#getPath()
 	 */
 	public IPath getPath() {
-		System.out.println("Bad multi access: MultiResourceDescription.getPath()");
+		IPath p = fRess[0].getPath();
+		if (p != null) {
+			for (int i=1; i<fRess.length; i++)
+				if (!p.equals(fRess[i].getPath()))
+					throw new UnsupportedOperationException();
+			return p;
+		}
 		throw new UnsupportedOperationException();
 	}
 
@@ -94,7 +100,7 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 	 * @see org.eclipse.cdt.core.settings.model.ICSettingContainer#getChildSettings()
 	 */
 	public ICSettingObject[] getChildSettings() {
-		System.out.println("Bad multi access: MultiResourceDescription.getChildSettings()");
+		System.out.println("Bad multi access: MultiResourceDescription.getChildSettings()"); //$NON-NLS-1$
 		throw new UnsupportedOperationException();
 	}
 
@@ -117,14 +123,14 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 	 * @see org.eclipse.cdt.core.settings.model.ICSettingObject#getId()
 	 */
 	public String getId() {
-		return fRess[0].getId() + "_etc";
+		return fRess[0].getId() + "_etc"; //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.core.settings.model.ICSettingObject#getName()
 	 */
 	public String getName() {
-		return "Multiple Resource Description";
+		return "Multiple Resource Description"; //$NON-NLS-1$
 	}
 
 	/* (non-Javadoc)
@@ -184,6 +190,7 @@ public class MultiResourceDescription extends MultiItemsHolder implements ICMult
 		return fRess;
 	}
 	
+	@SuppressWarnings("unchecked")
 	public void setSettingEntries(ICLanguageSetting lang, int kind, List incs, boolean toAll) {
 		for (int i=0; i<fRess.length; i++) {
 			if (fRess[i] instanceof ICFolderDescription) {
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
index 074843869f4..514f0eb4313 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/AbstractPage.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -113,6 +113,7 @@ implements
 	private static ICResourceDescription resd = null;
 	private static ICConfigurationDescription[] cfgDescs = null;
 	private static int cfgIndex = -1;
+	private static ICConfigurationDescription[] multiCfgs = null; // selected multi cfg
 	// tabs
 	private static final String EXTENSION_POINT_ID = "org.eclipse.cdt.ui.cPropertyTab"; //$NON-NLS-1$
 	public static final String ELEMENT_NAME = "tab"; //$NON-NLS-1$
@@ -212,7 +213,6 @@ implements
 			s = UIMessages.getString("AbstractPage.0"); //$NON-NLS-1$
 		} else if (!isApplicable()) {
 			return null;
-//			s = UIMessages.getString("AbstractPage.1"); //$NON-NLS-1$
 		} else if (!isCDTProject(getProject())) {
 			s = UIMessages.getString("AbstractPage.2"); //$NON-NLS-1$
 		}
@@ -380,24 +380,26 @@ implements
 
 		// Check if the user has selected the "all / multiple" configuration
 		if (selectionIndex >= cfgDescs.length) {
-			ICConfigurationDescription[] multiCfgs = null; // selected multi cfg
 			if ((selectionIndex - cfgDescs.length) == 0) {  // all
 				multiCfgs = cfgDescs;
 				cfgIndex = selectionIndex; 
-			} else {
-				ICConfigurationDescription[] mcfgs = ConfigMultiSelectionDialog.select(cfgDescs);
-				if (mcfgs == null || mcfgs.length == 0) {
-					// return back to previous selection
-					if (cfgIndex > configSelector.getItemCount()) {
-						cfgIndex = 0;
-						configSelector.select(0);
-						cfgChanged(cfgDescs[0]);
-					} else {
-						configSelector.select(cfgIndex);
+			} else { // multiple
+				if (cfgIndex != selectionIndex) { // to avoid re-request on page change 
+					ICConfigurationDescription[] mcfgs = ConfigMultiSelectionDialog.select(cfgDescs);
+					if (mcfgs == null || mcfgs.length == 0) {
+						// return back to previous selection
+						if (cfgIndex > configSelector.getItemCount()) {
+							cfgIndex = 0;
+							configSelector.select(0);
+							cfgChanged(cfgDescs[0]);
+						} else {
+							configSelector.select(cfgIndex);
+						}
+						return;
 					}
-					return;
+					multiCfgs = mcfgs;
+					cfgIndex = selectionIndex;
 				}
-				multiCfgs = mcfgs;
 			}
 			// TODO: avoid repeated update like for single cfg 
 			cfgChanged(MultiItemsHolder.createCDescription(multiCfgs, 
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/BinaryParsTab.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/BinaryParsTab.java
index 513b7d626b4..a4d8a017d34 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/BinaryParsTab.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/BinaryParsTab.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2007 Intel Corporation and others.
+ * Copyright (c) 2007, 2008 Intel Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -39,6 +39,7 @@ import org.eclipse.ui.PlatformUI;
 import org.eclipse.cdt.core.CCorePlugin;
 import org.eclipse.cdt.core.model.CoreModelUtil;
 import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
+import org.eclipse.cdt.core.settings.model.ICMultiResourceDescription;
 import org.eclipse.cdt.core.settings.model.ICResourceDescription;
 import org.eclipse.cdt.core.settings.model.ICTargetPlatformSetting;
 import org.eclipse.cdt.ui.CUIPlugin;
@@ -300,9 +301,13 @@ public class BinaryParsTab extends AbstractCPropertyTab {
 	}
 
 	public void performApply(ICResourceDescription src, ICResourceDescription dst) {
+		if (page.isMultiCfg()) {
+			src = ((ICResourceDescription[])((ICMultiResourceDescription)src).getItems())[0];
+			dst = ((ICResourceDescription[])((ICMultiResourceDescription)dst).getItems())[0];
+		} 
 		ICTargetPlatformSetting tps1 = src.getConfiguration().getTargetPlatformSetting();
 		ICTargetPlatformSetting tps2 = dst.getConfiguration().getTargetPlatformSetting();
-		if (tps1 != null && tps2 != null) { // temporary
+		if (tps1 != null && tps2 != null) { 
 			tps2.setBinaryParserIds(tps1.getBinaryParserIds());
 		}
 	}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/ConfigMultiSelectionDialog.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/ConfigMultiSelectionDialog.java
index daad8c9acf9..cb4bc28cca2 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/ConfigMultiSelectionDialog.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/ConfigMultiSelectionDialog.java
@@ -40,12 +40,13 @@ public class ConfigMultiSelectionDialog extends Dialog {
 	private CheckboxTableViewer tv;
 	private Button b_ok;
 	private Label message;
+	private static ICConfigurationDescription[] result = null;
 	
 	public static ICConfigurationDescription[] select(ICConfigurationDescription[] _cfgds) {
 		cfgds = _cfgds;
 		ConfigMultiSelectionDialog d = new ConfigMultiSelectionDialog(CUIPlugin.getActiveWorkbenchShell());
 		if (d.open() == OK)	
-			return (ICConfigurationDescription[])d.tv.getCheckedElements();
+			return result;
 		return null;
 	}
 	
@@ -104,6 +105,12 @@ public class ConfigMultiSelectionDialog extends Dialog {
 				boolean enabled = (tv.getCheckedElements().length > 1); 
 				if (b_ok != null) b_ok.setEnabled(enabled);
 				message.setVisible(!enabled);
+				if (enabled) {
+					Object[] ob = tv.getCheckedElements();
+					result = new ICConfigurationDescription[ob.length];
+					System.arraycopy(ob, 0, result, 0, ob.length);
+				} else
+					result = null;
 			}});
 		tv.setLabelProvider(new ITableLabelProvider() {
 			public Image getColumnImage(Object element, int columnIndex) { return null; }