diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/InputType.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/InputType.java
index c7244d81f39..5ef88ea83b3 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/InputType.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/InputType.java
@@ -811,6 +811,13 @@ public class InputType extends BuildObject implements IInputType {
 		setDirty(true);
 		return addlInput;
 	}
+	
+	IAdditionalInput createAdditionalInput(IAdditionalInput base) {
+		AdditionalInput newAdditionalInput = new AdditionalInput(this, (AdditionalInput)base);
+		getAdditionalInputList().add(newAdditionalInput);
+		setDirty(true);
+		return newAdditionalInput;
+	}
 
 	/* (non-Javadoc)
 	 * @see org.eclipse.cdt.core.build.managed.IInputType#getAdditionalInputs()
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/Tool.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/Tool.java
index 90d809c22cc..95ea938f764 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/Tool.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/core/Tool.java
@@ -33,6 +33,7 @@ import org.eclipse.cdt.core.settings.model.extension.CLanguageData;
 import org.eclipse.cdt.managedbuilder.buildproperties.IBuildPropertyType;
 import org.eclipse.cdt.managedbuilder.buildproperties.IBuildPropertyValue;
 import org.eclipse.cdt.managedbuilder.core.BuildException;
+import org.eclipse.cdt.managedbuilder.core.IAdditionalInput;
 import org.eclipse.cdt.managedbuilder.core.IBuildObject;
 import org.eclipse.cdt.managedbuilder.core.IConfiguration;
 import org.eclipse.cdt.managedbuilder.core.IEnvVarBuildPath;
@@ -3535,7 +3536,13 @@ public class Tool extends HoldsOptions implements ITool, IOptionCategory, IMatch
 		} else {
 			id = ManagedBuildManager.calculateChildId(getId(), null);
 		}
-		return createInputType(base, id, base.getName(), false);
+		InputType newType = (InputType)createInputType(base, id, base.getName(), false);
+		IAdditionalInput addlInputs[] = base.getAdditionalInputs();
+		for(int i = 0; i < addlInputs.length; i++){
+			IAdditionalInput addlInput = addlInputs[i];
+			newType.createAdditionalInput(addlInput);
+		}
+		return newType;
 	}
 
 	public boolean supportsType(IBuildPropertyType type) {