ConfigureStep: Employ task tree for running

Task-number: QTCREATORBUG-29168
Change-Id: I54281a6aaead85ca76f804956114e7c6dafeb28c
Reviewed-by: hjk <hjk@qt.io>

src/plugins/autotoolsprojectmanager/configurestep.cpp

@@ -13,6 +13,7 @@
 #include <projectexplorer/target.h>
 
 #include <utils/aspects.h>
+#include <utils/process.h>
 
 #include <QDateTime>
 
@@ -75,6 +76,9 @@ private:
 
 void ConfigureStep::doRun()
 {
+    using namespace Tasking;
+
+    const auto onSetup = [this] {
         // Check whether we need to run configure
         const FilePath configure = project()->projectDirectory() / "configure";
         const FilePath configStatus = buildDirectory() / "config.status";
@@ -84,8 +88,7 @@ void ConfigureStep::doRun()
 
         if (!m_runConfigure) {
             emit addOutput(Tr::tr("Configuration unchanged, skipping configure step."), OutputFormat::NormalMessage);
-        emit finished(true);
-        return;
+            return SetupResult::StopWithDone;
         }
 
         ProcessParameters *param = processParameters();
@@ -93,9 +96,11 @@ void ConfigureStep::doRun()
             param->setCommandLine(getCommandLine(param->command().arguments()));
             setSummaryText(param->summaryInWorkdir(displayName()));
         }
+        return SetupResult::Continue;
+    };
+    const auto onDone = [this] { m_runConfigure = false; };
 
-    m_runConfigure = false;
-    AbstractProcessStep::doRun();
+    runTaskTree({onGroupSetup(onSetup), onGroupDone(onDone), defaultProcessTask()});
 }
 
 // ConfigureStepFactory