Fortran Installation

To enable the comparison between the Fortran and C++ code.

First clone the Fortran version and change to the corresponding directory.

git clone --depth 1 --single-branch --branch FCC_release git@github.com:KrakowHEPSoft/KKMCee-dev.git path/to/KKMCee-fortran
cd path/to/KKMCee-fortran

Since we will be linking the Fortran version to the C++ one we need to compile the source code to shared libraries. This can be achieved by using the following patch file

git apply kkmc-fortran.patch

Now we can proceed with the installation

ln -s dizet-6.45 dizet 
cd ./ffbench
alias kmake='make -f KKMakefile'
kmake makflag
kmake makprod
kmake EWtables
kmake compile
cd ../KKsem
kmake

Depending on your system you may need to add -std=legacy -fPIC compiler flags to ffbench/KKMakefile

FFLAGS  = -O -g -fno-second-underscore -fno-automatic -ffixed-line-length-132 -fbackslash -std=legacy

Dependencies

Before installing the C++ version the following dependencies should be installed:

• ROOT
• PHOTOS

It is also recommended that you install the Rivet and Yoda packages which can be used to analyse events.

• CEDAR

If you chose not to install the Cedar toolset you are still required to install HepMC3.

• HepMC3

Photos Installation

git clone https://gitlab.cern.ch/photospp/photospp.git
cd photospp
./configure --prefix=path/to/build./.photos-build --without-hepmc --with-hepmc3=path/to/hepmc3 
make -j4
make install

C++ Installation

Next we checkout the C++ version. We enable the internal test by providing -DKKMC_ENABLE_TESTS=ON and the path to Fortran directory. Currently we have to do the build step twice

git clone git@github.com:KrakowHEPSoft/KKMCee-dev.git path/to/KKMCee-cpp
cd path/to/KKMCee-cpp
git checkout update-build-sys
cd path/to/KKMCee-cpp
cmake -S . -B path/to/build -DKKMC_ENABLE_TESTS=ON 
                            -DKKMC_PHOTOS_DIR=/path/to/photos/ 
                            -DKKMC_FORTRAN_DIR=path/to/KKMCee-fortran
                            -DKKMC_ENABLE_HEPMC3=ON
                            -DCMAKE_INSTALL_PREFIX=/path/to/install
cmake --build path/to/build # This will fail
cmake --build path/to/build

Now we can run the tests.

cd path/to/build
ctest -j 5

After the test have finished each test directory e.g path/to/build/ISRCheck will have a tex files which can be compiled to see cross-section tables.