Linking problem during make for exampleB1

Hello,

I am trying to get geant4.10.02.p03 working with CLHEP 2.3.3.2 on Ubuntu 18.04.3 LTS. I followed the tutorial here: https://indico.tifr.res.in/indico/getFile.py/access?contribId=29&resId=0&materialId=slides&confId=5309, but I had to install some additional packages to the ones listed there to get cmake to build Geant4.

I ran into trouble trying to compile the first example. According to the tutorial, I have edited .bashrc to contain

export CLHEP_DIR=/home/thomas/CLHEP/2.3.3.2/CLHEP-install
export CLHEP_INCLUDE_DIR=${CLHEP_DIR}/include/
export CLHEP_LIBRARY=${CLHEP_DIR}/lib/
export LD_LIBRARY_PATH=${CLHEP_LIBRARY}:${LD_LIBRARY_PATH}
export PATH=$CLHEP_DIR/bin/:$PATH
source /home/thomas/Geant4/geant4.10.02.p03-install/bin/geant4.sh

When I try to build the example with cmake I get the following error:

$ cmake ../B1
-- The C compiler identification is GNU 7.4.0
-- The CXX compiler identification is GNU 7.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
  Could NOT find CLHEP:

  CLHEP Header Path Not Found

  CLHEP Library Not Found

  Incompatible versions, (found) < 2.3.3.2(required)

   (missing: CLHEP_LIBRARY CLHEP_INCLUDE_DIR) (Required is at least version "2.3.3.2")
Call Stack (most recent call first):
  /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  /home/thomas/Geant4/geant4.10.02.p03-install/lib/Geant4-10.2.3/Modules/FindCLHEP.cmake:297 (find_package_handle_standard_args)
  /home/thomas/Geant4/geant4.10.02.p03-install/lib/Geant4-10.2.3/Geant4Config.cmake:281 (find_package)
  CMakeLists.txt:15 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/thomas/Geant4/geant4.10.02.p03-install/share/Geant4-10.2.3/examples/basic/B1-build/CMakeFiles/CMakeOutput.log".

I can get it to build if I instead do

$ cmake -DCLHEP_INCLUDE_DIR=/home/thomas/CLHEP/2.3.3.2/CLHEP-install/include/ -DCLHEP_LIBRARY=/home/thomas/CLHEP/2.3.3.2/CLHEP-install/lib/ ../B1
-- Configuring done
-- Generating done
-- Build files have been written to: /home/thomas/Geant4/geant4.10.02.p03-install/share/Geant4-10.2.3/examples/basic/B1-build

I am confused that cmake cannot find CLHEP_INCLUDE_DIR and CLHEP_LIBRARY. If I then run make I get the following error:

$ make
Scanning dependencies of target exampleB1
[ 12%] Building CXX object CMakeFiles/exampleB1.dir/exampleB1.cc.o
[ 25%] Building CXX object CMakeFiles/exampleB1.dir/src/B1ActionInitialization.cc.o
[ 37%] Building CXX object CMakeFiles/exampleB1.dir/src/B1DetectorConstruction.cc.o
[ 50%] Building CXX object CMakeFiles/exampleB1.dir/src/B1EventAction.cc.o
[ 62%] Building CXX object CMakeFiles/exampleB1.dir/src/B1PrimaryGeneratorAction.cc.o
[ 75%] Building CXX object CMakeFiles/exampleB1.dir/src/B1RunAction.cc.o
[ 87%] Building CXX object CMakeFiles/exampleB1.dir/src/B1SteppingAction.cc.o
[100%] Linking CXX executable exampleB1
/usr/bin/ld: cannot find /home/thomas/CLHEP/2.3.3.2/CLHEP-install/lib: File format not recognized
collect2: error: ld returned 1 exit status
CMakeFiles/exampleB1.dir/build.make:295: recipe for target 'exampleB1' failed
make[2]: *** [exampleB1] Error 1
CMakeFiles/Makefile2:99: recipe for target 'CMakeFiles/exampleB1.dir/all' failed
make[1]: *** [CMakeFiles/exampleB1.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

I am very inexperienced with Linux, and I am not sure what this error means or how to fix it. Any help would be greatly appreciated. Thank you.