Installation instructions

Prerequisites

There are several requirements for building the fitter:

• CMake 3.12+
• A C++14 enabled compiler
  • Recommended GCC 8+ ( GCC 5 minumim )
  • Recommended Clang 9+ ( Clang 3.4 minimum )
• ROOT 6, compiled with C++14 or later
• JSON for Modern C++
• yaml-cpp

Shell setup

In this guide, it is assumed you have already defined the following bash environment variables:

• $REPO_DIR: the path to the folder where your git projects are stored. This guide will download this repo into the subdirectory $REPO_DIR/gundam.

• $BUILD_DIR: the path where the binaries are built. As for the previous variables, this guide will work under $BUILD_DIR/gundam.

• $INSTALL_DIR: the path where the binaries are installed and used by the shell. Same here: this guide will work under $INSTALL_DIR/gundam.

As an example, here is how I personally define those variables. This script is executed in the $HOME/.bash_profile on macOS or $HOME/.bashrc on Linux, as they can be used for other projects as well.

export WORK_DIR="$HOME/Documents/Work"
export INSTALL_DIR="$WORK_DIR/Install/"
export BUILD_DIR="$WORK_DIR/Build/"
export REPO_DIR="$WORK_DIR/Repositories/"

If it’s the first time you define those, don’t forget to mkdir!

mkdir -p $INSTALL_DIR
mkdir -p $BUILD_DIR
mkdir -p $REPO_DIR

Cloning the source code

GUNDAM source code is officially available under the GUNDAM-organization on GitHub. To copy the code on your computer or cluster, we recommend to use GIT. We assume

cd $REPO_DIR
git clone --recurse-submodules https://github.com/gundam-organization/gundam.git
cd gundam

For GUNDAM users, it is recommended for you to check out the latest tagged version of this repository. A simple bash script allows you to check out the latest tagged version by tapping:

./update.sh --latest

Alternatively GUNDAM users can choos the branch

git branch master
git pull origin selectedbranch
git submodule sync
git submodule update --init

Note that this command will also automatically check out the submodule included in the project. Therefore, in order to update your code when a new release is available, simply use the same command. Note that git versions before 2.0 may have issues to checkout the correct submodules (see issue #429)

Building the code

cd $BUILD_DIR/gundam
cmake \
-D CMAKE_INSTALL_PREFIX:PATH=$INSTALL_DIR/gundam \
-D CMAKE_BUILD_TYPE=Release \
$REPO_DIR/gundam/.
make install -j$(nproc)

Add GUNDAM to the PATH

export PATH="$INSTALL_DIR/gundam/bin:$PATH";
export LD_LIBRARY_PATH="$INSTALL_DIR/gundam/lib:$LD_LIBRARY_PATH";

Installation for:

• Compiling on macOS
• Compiling on CCLyon
• Compiling on HPC cluster (University of Geneva)
• Compiling on LXPLUS
• Compiling on HPC cluster (Stony Brook University)
• Compiling on Cedar (Digital Research Alliance of Canada)
• Compiling on the machine of NN group of SBU
• Compiling on DUNEgpvm on FNAL

Alternative installation procedure

cd $REPO_DIR/gundam
cd cmake/scripts
./gundam-setup.sh
./gundam-build.sh

this will create the build directory gundam-${compiler}_${compiler_version}-${compiler_machine}.

Errors and warnings