How to compile Empty Epsilon on Linux
Run the following on Lubuntu 19.10:
#Acquire prerequisites
sudo apt install ninja-build libsfml-dev
mkdir bridge_simulation
cd bridge_simulation
#Acquire code
git clone https://github.com/daid/EmptyEpsilon.git
git clone https://github.com/daid/SeriousProton.git
#Check out correct tag
cd EmptyEpsilon
git checkout EE-2020.04.09
cd ..
#Prepare for out-of-source build
mkdir build
cd build
#Build (read notes below first!)
cmake -GNinja -DCMAKE_BUILD_TYPE=Release -DSERIOUS_PROTON_DIR=../SeriousProton/ -DCPACK_PACKAGE_VERSION_MAJOR=2020 -DCPACK_PACKAGE_VERSION_MINOR=04 -DCPACK_PACKAGE_VERSION_PATCH=09 ../EmptyEpsilon/
ninja
#Navigate to EmptyEpislon directory so executable can find resources
cd ../EmptyEpsilon/
../build/EmptyEpsilon
For better performance, consider modifying EmptyEpsilon/CMakeLists.txt from (line 37):
set(OPTIMIZER_FLAGS ${OPTIMIZER_FLAGS} -O3 -flto -funsafe-math-optimizations)
to
set(OPTIMIZER_FLAGS ${OPTIMIZER_FLAGS} -O3 -flto -funsafe-math-optimizations -march=native)