baproj

to download (clone with git):

git clone --recurse-submodules -j8 https://github.com/joshinils/baproj
cd baproj

to make (with cmake >=3.10):

mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make -j "$(nproc)" baproject
cd ..

(cmake needs a C++ compiler)

to run; the executable is now located in the build directory, named baproject:

build/baproject

Additionally a folder with GTFS data is needed:

for example this one: https://www.vbb.de/unsere-themen/vbbdigital/api-entwicklerinfos/datensaetze

this then has to be extracted into a folder named (explicitly, for now) BVG_VBB_bereichsscharf.

i.e. the folder structure is:

baproj
├── [various source files, including main.cpp]
├── build
│   ├── baproject [the executable]
│   ├── [CMake files]
│   └── Makefile
├── BVG_VBB_bereichsscharf
│   ├── agency.txt
│   ├── calendar_dates.txt
│   ├── calendar.txt
│   ├── frequencies.txt
│   ├── pathways.txt
│   ├── routes.txt
│   ├── shapes.txt
│   ├── stops.txt
│   ├── stop_times.txt
│   ├── transfers.txt
│   └── trips.txt
│     or more, or less, this is an example
│
├── graph
│   ├── [submodule files]
├── idea
│   ├── skizze_1.jpg
│   └── skizze_2.jpg
├── README.md
├── .git
├── .gitignore
└── .gitmodules

optionally install missing dependencies

install opengl:

sudo apt-get install freeglut3 freeglut3-dev libglew1.5 libglew1.5-dev libglu1-mesa libglu1-mesa-dev libgl1-mesa-glx libgl1-mesa-dev -y

png.h missing or another library:

sudo apt install libpng-dev libxinerama-dev libxrandr-dev libxi-dev libxcursor-dev libxxf86vm-dev -y