#!/bin/bash

cd  $SIMPATH/transport/

# Full output during compilation and linking to check for the
# compile and link commands
export CPPVERBOSE=1


if (not_there Geant4-Source $SIMPATH/transport/geant4/source/CMakeLists.txt);
then
  untar geant4 $GEANT4VERSION.tar.gz 
  ln -s $GEANT4VERSION geant4
   
fi

G4WORKDIR=$SIMPATH/transport/geant4/

if (not_there Geant4-lib $SIMPATH/transport/geant4/lib/libG4physicslists.so);
then

  cd $G4WORKDIR
  if (not_there Geant4-env  $SIMPATH/transport/geant4/source/geometry/env.sh);
  then
     if [ "$build_for_grid" = "yes" ]
     then
        cp  $SIMPATH/transport/g4env_grid.sh  env.sh
        echo "Copied g4env_grid.sh ......................" | tee -a $logfile
     else
        cp  $SIMPATH/transport/g4env.sh  env.sh
        echo "Copied g4env.sh ......................" | tee -a $logfile
     fi
  else   
     . ./env.sh
  fi

 
  ## Add missing directory: bug in G4.9.4!!!!
  ## correct the CMakeLists.txt of source/geometry dir
  patch -p0 < ../geant4_cmake.patch

  if (not_there Geant4-build  $SIMPATH/transport/geant4/build);
  then 
    mkdir build
  fi 
  cd build
  
  cmake -DCMAKE_INSTALL_PREFIX=$G4WORKDIR  -DCLHEP_CONFIG_EXECUTABLE=$SIMPATH/cern/clhep/clhep-config  -DGEANT4_USE_GEANT3TOGEANT4=TRUE  ../
  $MAKE_command -j$number_of_processes  install
  
  if [ "$platform" = "macosx" ];
  then
    cd $SIMPATH/transport/geant4/lib
    ext1=dylib
    ext2=so
    for file in $(ls *.$ext1);
    do
      ln -s $file ${file%.*}.$ext2
    done
  fi

  . $G4WORKDIR/share/$GEANT4VERSIONp/config/$GEANT4VERSIONp.sh
  
else
   
. $G4WORKDIR/share/$GEANT4VERSIONp/config/$GEANT4VERSIONp.sh

fi
  
cd  $SIMPATH
return 1