Bug 38614 - External tool builder not triggered when checking project out from repository

1 files changed, 11 insertions, 4 deletions

diff --git a/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/model/ExternalToolBuilder.java b/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/model/ExternalToolBuilder.java
index 826933e04..190bdb954 100644
--- a/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/model/ExternalToolBuilder.java
+++ b/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/model/ExternalToolBuilder.java
@@ -44,6 +44,8 @@ public final class ExternalToolBuilder extends IncrementalProjectBuilder {
 
 	private static String buildType = IExternalToolConstants.BUILD_TYPE_NONE;
 	
+	private boolean firstBuild= true;
+
 	/* (non-Javadoc)
 	 * Method declared on IncrementalProjectBuilder.
 	 */
@@ -63,11 +65,16 @@ public final class ExternalToolBuilder extends IncrementalProjectBuilder {
 		if (!runTool) {
 			return null;
 		}
-		
-		IResource[] resources= ExternalToolsUtil.getResourcesForBuildScope(config, monitor);
 		boolean buildForChange= true;
-		if (resources != null && resources.length > 0) {
-			buildForChange= buildScopeIndicatesBuild(resources);
+		//cannot check for resource changes on the first build as there is no 
+		//delta state to base the changes on
+		if (!firstBuild)  {	
+			IResource[] resources= ExternalToolsUtil.getResourcesForBuildScope(config, monitor);
+			if (resources != null && resources.length > 0) {
+				buildForChange= buildScopeIndicatesBuild(resources);
+			}
+		} else  {
+			firstBuild= false;
 		}
 		
 		if (buildForChange) {