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Installation

Getting NuWro

To get the most up to date version of NuWro use:

git clone https://github.com/NuWro/nuwro.git

To get one of the stable releases use:

git clone -b [release tag] https://github.com/NuWro/nuwro.git

e.g.

git clone -b nuwro_17.01 https://github.com/NuWro/nuwro.git

git version older than 1.7.10

git clone -b [release tag] will not work for git older than 1.7.10 (but it is from May 2012 so you may consider updating your system).

To get specific release you can use git checkout tags/[release tag], e.g.

git clone https://github.com/NuWro/nuwro.git
git checkout tags/nuwro_17.01

Dependencies

Building ROOT with PYTHIA6 support

tar -xzvf pythia6.tar.gz
cd pythia6 && ./makePythia6.linux

It requires gfortran Fortran compiler.

  • copy libPythia6.so to root/lib folder:
tar -zxvf root_v*.source.tar.gz
mkdir root/lib
cp pythia6/libPythia6.so root/lib
  • configure ROOT:
cd root && ./configure --with-pythia6-libdir=lib
  • and make it:
make

For ROOT version 6.16.00 you can try out the following script :

#make temporary directory for downloading sources
mkdir ~/install
cd ~/install
#dowload pythia6 sources 
wget https://root.cern.ch/download/pythia6.tar.gz
tar xzf pythia6.tar.gz
cd pythia6
#modify ./makePythia6.linux to use gfortran in place of g77
sed -i 's/g77/gfortran/g' ./makePythia6.linux
#make libPythia6.so
bash ./makePythia6.linux
#download ROOT sources
cd ~/install
wget https://root.cern/download/root_v6.16.00.source.tar.gz
tar zxf root_v6.16.00.source.tar.gz
#create build directory
mkdir ~/root
cd ~/root
mkdir ~/root/lib
#copy pythia6 library to build directory
cp ~/install/pythia6/libPythia6.so  ~/root/lib
#cmake ROOT with PYTHIA6 enabled
cmake -DPYTHIA6_LIBRARY=~/root/lib/libPythia6.so -Dpyhia6=ON ~/install/root-6.16.00
#make it
make -j4
  • set environmental variables:
export ROOTSYS=(path to root directory)
export PATH=$PATH:$ROOTSYS/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ROOTSYS/lib

you can use the script provided by ROOT (bin/this_root.sh) that includes the commands and run source bin/this_root.sh every time you start a terminal or add the above lines to either ~/.bashrc or ~/.bash_profile.

macOS support

NuWro has been tested to work properly on the following configuration

x86_64-apple-darwin15.6.0
clang-800.0.42.1
root-5.34.36

While installing on macOS one should remember about the following differences:

  • PYTHIA6 should be compiled using the ./makePythia6.macosx64 command,
  • the shared object of PYTHIA6 is called libPythia6.dylib,
  • the bash profile file is called ~/.profile.

Note that the following problems are known to emerge:

  • NuWro has not yet been configured to work with ROOT6 under macOS,

  • while installing gfortran via Homebrew the libgfortran.dylib file is not properly linked for the C compiler, one should export the variable LIBRARY_PATH with the path to the lib file.
    e.g. put into ~/.profile the following line (it will depend on the gfortran installation)

    export LIBRARY_PATH=/usr/local/lib/gcc/6

Building NuWro

Once you have ROOT installed with PYTHIA6 support just make NuWro:

tar -zxvf nuwro-*.tar.gz
cd nuwro && make

Troubleshooting

  • If you have troubles to compile ROOT with gcc5 compiler and getting errors about undefined references to std::__cxx11 (described here), you can add the following flag:
-D_GLIBCXX_USE_CXX11_ABI=0

to CFLAGS in proper [root]/config/Makefile.[system] file.