There are seven hard dependencies currently for building Inexor.
You will need to obtain them in some form (see the specific Windows and Linux sections below)

  • git
    • a version control system
  • CMake >= v3.9.2
    • Generates our platform specific build code from cross platform scripts
  • A Compiler
    • Translates the human-readable source code to executable binary code
  • Python
    • version doesn't matter, although 2.x is preferred to 3.x
    • we need it for our package manager Conan
  • Conan
    • Our C++ package manager for our dependencies
      • don't forget to add our Conan repository: conan remote add inexor --insert
  • Node.js >= 8.9.0 (with included NPM)
    • This is the base for InexorFlex (our scripting environment)
  • Yarn >= 1.3.2

On Linux you will be able to download all these through your package manager.


This will give you a pretty good exemplary environment if you are on Windows.


Fetching the Repository

You will have to clone the Project somewhere.

  • If you use SmartGit:

    • click Repository and Clone (or press Ctrl+Shift+O)
    • Select "Remote Git ... repository", URL =
    • On the next Page select Fetch all Heads and Tags
    • Select a folder on the next page. Your local Git repository will be created here.
    • Select Finish
  • If you use GitHub Desktop:

    • Go to the overview of our inexor-core repository and click on Clone in Desktop
    • Choose a directory in which the repository is getting cloned
    • Click Ok

Create the Visual Studio

(or the project file for another generator)

Execute tool/create_visual_studio2017_project.bat (or tool/create_visual_studio2015_project.bat if your using Visual Studio 2015) with Administrator privileges. This will:

  1. create a new build folder
  • which will contain your project file Inexor.sln (you can open that one to open VS)
  1. receive all dependencies
  • (which takes some time the first time you do it) (using conan install internally)
  1. Create the VS project using CMake
  2. do a first build
  • which also takes some time

So relax and sit back.


Advanced users can also manually do the conan-install step and and use the CMake Gui as described here.

Compile Inexor

  • If you use Visual Studio:
    • Open build/Inexor.sln
      • It will automatically open with Visual Studio
    • Right click the INSTALL solution in solution explorer, and click build.


Start Inexor with the inexor.bat file.


Fetching the sources

The first step of building this project is rather obvious, but for sake of completeness here you have it.

  • Download the repository, you can either use the command line git clone --recursive or your favorite git GUI.

Install the build requirements

The next step is to get all the required dependencies to compile. You'll need an environment that can build C++ programs such as Eclipse, CLion, NetBeans.

Specifically, on Linux you will need CMake >= 3.9.2, Conan, make and GCC >= 5.4 or Clang >= 3.9 as your compiler. The version numbers are minimum: They might work with older versions (but it's not official supported) and newer versions are better! Also install your distribution's development packages of Mesa

OS What to do
Debian/Debian-derived/Ubuntu sudo apt-get install git cmake build-essential nodejs python-pip
CEF dependencies (you will get automatically asked to install those when you run Conan): sudo apt-get install libpangocairo-1.0-0 libxcomposite1 libxrandr2 libxcursor1 libatk1.0-0 libcups2 libnss3 libgconf-2-4 libxss1 libasound2 libxtst6
Fedora sudo dnf install git cmake mesa-libgl-devel
OpenSUSE zypper in -t pattern devel_C_C++ then run zypper install mesa-libgl-devel node cmake git
ArchLinux Run sudo pacman -S --needed git cmake mesa mesa-libgl glew glm. conan, freeglut, esound (AUR) is also required.
CEF dependencies: sudo pacman -S --needed pango cairo libxi libxcomposite alsa-lib libxtst gconf libxrandr.

Installing is usually to be installed using the python package manager pip Simply pip install conan should do it. Afterwards you need to add our Conan repository. Execute conan remote add inexor --insert.

Afterwards you need to change the compiler version in ~/.conan/profiles/default to


Getting the latest Node.js

For the application to run appropiately Node.js >= 8.9.0 is required (it might work on lower versions, it might). Consider their website for install instructions.

Running Conan & CMake

Run Conan to get all the used libraries in place. conan instructions See the examples below.

Afterwards run CMake, which generates project files for your favourite IDE or tool. If you have CMake in your path you can run (mkdir build && cmake ..), you probably will need to add a -G "<generator>" flag to make it generate a project file for your precious IDE (you do not need this for makefiles on linux).
Alternatively use the example lines below.

The most commonly used generators will probably include Visual Studio, CodeBlocks, MinGW Makefiles, Unix Makefiles and Xcode. There are also makefiles for Eclipse, Sublime Text and a lot others. The complete list can be found here.

Parallel builds

You need to set the environment var MAKEFLAGS to include the numbers of cores you can use. (With conan we build all dependencies if not previously build. So set this before running Conan)

Do setenv MAKEFLAGS '-j 8' or export MAKEFLAGS='-j 8' before building for having 8 jobs running (usually you want jobs = your_number_of_cores + 2 2 is a margin for disk IO)


(mkdir build && cd build && conan install .. --build=missing && conan build ..) # Should work for any setting any compiler, any OS
# By default conan install uses build_type `Release`.
(mkdir build && cd build && conan install .. -s build_type=Debug --build=missing && conan build ..)
# to create a debug build and build it.
(mkdir build && cd build && conan install .. -s compiler=gcc -s compiler.version=6.3 --build=missing && conan build ..)
# to set a specific compiler and version if you got multiple ones installed.
# Reading some stuff up in the Conan docs might be helpful here

Notice: make sure to do cmake .. and make from a directory that is not referenced by a symlink somewhere in the path (otherwise you will have some problems with Protobuf).

Actually building the sources

If you used conan build this is already DONE! (as its building the sources under the hood already)


This step greatly depends on your IDE or environment but if you have used makefiles you can probably just run (cd build && make install). Add -j<number of cores> to make to run it multithreaded. Note that make install will not install any files globally, but only within the directory structure of the project.


Here's Run Inexor.


If anything fails: Remove your build folder, try again. ("did you try to restart it?")


The order is:

  1. you run Conan in the build dir.
  2. you run CMake in the build dir.
  3. you run make in the build dir / open the Visual Studio file in your build dir.

The second step might allow some better costumisations with the CMake Gui (as you see more parameters)

  • Select your Inexor root directory for Where is the source code
  • Create a new directory within the root directory named build
  • Select the new build directory for Where to build the binaries
  • Click Configure
  • Select your desired generator
    • If you use Visual Studio select VS-Version Visual Studio 14 2015 and (if you have) the x64-Version so e.g. Visual Studio 14 2015 Win64
  • Click Generate to generate a project file


  • if you haven't already install brew
  • execute brew install conan
  • execute conan remote add inexor --insert
  • execute brew install nasm
  • execute brew install git
  • we only supporting Apple Clang >= 9.0
  • see issue


This is a list of common problems and their solutions

  • Keep your directories clean, don't build in the main directory!

    This error means that you are telling CMake to generate project files inside the project's root directory. You should keep your root directory clean and create a directory named build inside the root directory. Then tell CMake to generate to that directory instead of the root directory. To do this from the commandline, just use (mkdir build; cd build && cmake -G "<your generator>" ..).

  • Random errors like XY was set to NOTFOUND

    This can have multiply sources, probably your CMake cache is somehow disturbed by changes around it or you are missing parts of the repository. What you should try to solve this: Check for existence of the submodules folders: in platform should be files.
    (Only needed if you do not use a GUI for git supporting submodules, like SmartGit): Furthermore these submodules need to be up to date if you previously checked out another version of the repo, so you need to do git submodule update to fetch the needed one.
    And last but not least, if you previously created makefiles/projectfiles/whatever into a build directory, delete it and create a new build directory instead.

  • Core textures not found (e.g. texture/inexor/notexture.png)

    Two likely possibilities: Either you didn't get the media repositories or you didn't start Inexor via the scripts (inexor.bat on Windows or inexor_unix on Linux).