DO-NOT-MERGE Trying to fix this error.

Author: ChristianTackeGSI

examples/MQ/pixelDetector/macros/run_sim.C

@@ -59,7 +59,7 @@ void run_sim(Int_t nEvents = 10, TString mcEngine = "TGeant3", Int_t fileId = 0,
     // ------------------------------------------------------------------------
 
     // -----   Create simulation run   ----------------------------------------
-    auto run = std::make_unique<FairExampleRunSim>(mcEngine);
+    auto run = std::make_unique<FairExampleRunSim>(mcEngine.Data());
     run->SetIsMT(isMT);       // Multi-threading mode (Geant4 only)
     run->SetSink(std::make_unique<FairRootFileSink>(outFile));
     FairRuntimeDb* rtdb = run->GetRuntimeDb();

examples/advanced/Tutorial3/macro/run_sim.C

@@ -32,7 +32,7 @@ void run_sim(Int_t nEvents = 100, TString mcEngine = "TGeant4")
     gSystem->Setenv("CONFIG_DIR", tut_configdir.Data());
 
     // create Instance of Run Manager class
-    FairExampleRunSim run{mcEngine};
+    FairExampleRunSim run{mcEngine.Data()};
     run.SetUseFairLinks(kTRUE);
     //  FairLinkManager::Instance()->AddIncludeType(0);
     // set the MC version used

examples/advanced/propagator/macros/runMC.C

@@ -55,7 +55,7 @@ int runMC(Int_t nEvents = 1000, TString mcEngine = "TGeant4", Bool_t isMT = fals
     // ------------------------------------------------------------------------
 
     // -----   Create simulation run   ----------------------------------------
-    FairExampleRunSim run{mcEngine};
+    FairExampleRunSim run{mcEngine.Data()};
     //  run.SetSimulationConfig(new FairVMCConfig());
     run.SetIsMT(isMT);   // Multi-threading mode (Geant4 only)
     run.SetSink(std::make_unique<FairRootFileSink>(outFile));

examples/common/mcstack/FairExampleRunSim.h

@@ -20,7 +20,7 @@
 class FairExampleRunSim : public FairRunSim
 {
   public:
-    explicit FairExampleRunSim(const char* mcEngine);
+    FairExampleRunSim(const char* mcEngine);
     ~FairExampleRunSim() override = default;
     ClassDefOverride(FairExampleRunSim, 0);
 };

examples/simulation/Tutorial4/macros/run_tutorial4.C

@@ -73,7 +73,7 @@ void run_tutorial4(Int_t nEvents = 10, TString mcEngine = "TGeant3", Bool_t doAl
     //  gLogger->SetLogScreenLevel("INFO");
 
     // -----   Create simulation run   ----------------------------------------
-    FairExampleRunSim run{mcEngine};
+    FairExampleRunSim run{mcEngine.Data()};
     run.SetIsMT(isMT);   // Multi-threading mode (Geant4 only)
     run.SetSink(std::make_unique<FairRootFileSink>(outFile));
     FairRuntimeDb* rtdb = run.GetRuntimeDb();