RockyML is a header-only library. So you just need to include it in your project. But first make sure you have installed the required dependencies:

Dependencies

A C++ compiler supporting C++17, GCC is tested
CMake
Eigen, latest stable version
A BLAS/LAPACK implementation, OpenBLAS is tested
Intel Threading Building Blocks (oneTBB)
An MPI implementation, OpenMPI is recommended
nlohmann/json
Cpr
Spdlog

First install Open MPI and OpenBLAS:

apt install libopenblas-dev openmpi-bin openmpi-common libopenmpi-dev

It is highly recommended to install the other dependencies using a package manager like vcpkg:

vcpkg install tbb eigen3 cpr spdlog nlohmann-json catch2

A minimal CMake example

Here is a minimal CMakeLists.txt example for using RockyML:

cmake_minimum_required(VERSION 3.2)
project(Example LANGUAGES CXX)
 
# make sure your compiler supports c++17
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -ffast-math -march=native")
 
include_directories(<path_to_rockyml_include_folder>)
 
# find requirements
find_package(TBB CONFIG REQUIRED)
find_package(Eigen3 CONFIG REQUIRED)
find_package(spdlog CONFIG REQUIRED)
find_package(nlohmann_json CONFIG REQUIRED)
find_package(cpr CONFIG REQUIRED)
 
# linking the requirements
add_executable(app main.cc)
target_link_libraries(app PRIVATE TBB::tbb TBB::tbbmalloc Eigen3::Eigen cpr::cpr spdlog::spdlog lohmann_json::nlohmann_json)

Note : if you've used vcpkg to install requirements, make sure that you set the CMAKE_TOOLCHAIN_FILE.

cmake .. -DCMAKE_CXX_COMPILER=mpic++ -DCMAKE_TOOLCHAIN_FILE=<path-to-vcpkg.cmake>

Finally you can build your project:

make