Modify O2DPG_ROOT to O2O2DPG_MC_CONFIG_ROOT

Author: motomioya

MC/config/PWGDQ/external/generator/GeneratorHFToMu_EvtGenFwdY_gaptriggered_dq.C

@@ -3,7 +3,7 @@
 #include "Pythia8/Pythia.h"
 #include "TRandom.h"
 
-R__ADD_INCLUDE_PATH($O2DPG_ROOT/MC/config/PWGDQ/EvtGen)
+R__ADD_INCLUDE_PATH($O2DPG_MC_CONFIG_ROOT/MC/config/PWGDQ/EvtGen)
 #include "GeneratorEvtGen.C"
 
 #include <string>
@@ -25,7 +25,7 @@ public:
     mInverseTriggerRatio = inputTriggerRatio; 
     // define minimum bias event generator
     auto seed = (gRandom->TRandom::GetSeed() % 900000000);
-    TString pathconfigMB = gSystem->ExpandPathName("$O2DPG_ROOT/MC/config/PWGDQ/pythia8/generator/pythia8_inel_triggerGap.cfg");
+    TString pathconfigMB = gSystem->ExpandPathName("$O2DPG_MC_CONFIG_ROOT/MC/config/PWGDQ/pythia8/generator/pythia8_inel_triggerGap.cfg");
     pythiaMBgen.readFile(pathconfigMB.Data());
     pythiaMBgen.readString("Random:setSeed on");
     pythiaMBgen.readString("Random:seed " + std::to_string(seed));
@@ -171,7 +171,7 @@ FairGenerator*
 
   gen->setRapidityHadron(rapidityMin,rapidityMax);
   gen->setHadronMultiplicity(1);
-  TString pathO2table = gSystem->ExpandPathName("$O2DPG_ROOT/MC/config/PWGDQ/pythia8/decayer/switchOffChadrons.cfg");
+  TString pathO2table = gSystem->ExpandPathName("$O2DPG_MC_CONFIG_ROOT/MC/config/PWGDQ/pythia8/decayer/switchOffChadrons.cfg");
   gen->readFile(pathO2table.Data());
   gen->setConfigMBdecays(pathO2table);
   gen->setVerbose(verbose);

MC/config/PWGDQ/ini/tests/GeneratorHF_ccbarToMuonsSemileptonic_fwdy_inel.C

@@ -64,6 +64,10 @@ int External()
   << "#signal pairs: " << nSignalPairs << "\n"
   << "#muon pairs: " << nLeptonPairs << "\n"
   << "#muon pairs to be done: " << nLeptonPairsToBeDone << "\n";
+  if (nSignalPairs < nEvents) {
+    std::cerr << "Number of signal pairs should be at least equaled to the number of events\n";
+    return 1;
+  }
   if (nLeptonPairs != nLeptonPairsToBeDone) {
     std::cerr << "The number of muon pairs should be the same as the number of muon pairs which should be transported.\n";
     return 1;