Installation for MacOSX

Prerequisites for MacOSX users

If not already installed:

  1. Install Xcode
  2. Install git
  3. Install Python 2.7
  4. Install CMake. The minimal version required is 3.7 if you want to compile with precompiled headers (build twice faster, enabled by default). Otherwise you can use a 3.1 version.
  5. Install Ninja : to use instead of make.

For an easy install, you can use the Hombrew project to install missing packages.

$ brew install git
$ brew install python
$ brew install cmake
$ brew install ninja

For Openni dependency, you need libusb

$ brew install libusb-compat

If you are building the dependencies with the fw4spl-ext-deps additional dependencies, the VLC application is also needed.

$ brew cask install vlc

FW4SPL installation

FW4SPL uses CMake as build system.

We strongly recommend to build FW4SPL by separating source files, build files and install files. So we propose the following folders layout :

  • Deps/Build/Debug
  • Deps/Build/Release
  • Deps/Src
  • Deps/Install/Debug
  • Deps/Install/Release
  • Dev/Build/Debug
  • Dev/Build/Release
  • Dev/Src
  • Dev/Install/Debug
  • Dev/Install/Release

Of course you can name the folders as you wish, or choose a different layout, but keep in mind to not build inside the source directory. This is strongly discouraged by CMake authors.

Here are the details, if you need some help to create this folders hierarchy :

  • Create a third party folder (Deps)
$ mkdir Deps
  • Create into “Deps” the source, build and install directories
$ mkdir Deps/Src Deps/Build Deps/Install
  • Create sub-folders to separate Debug and Release compilations
$ mkdir Deps/Build/Debug Deps/Build/Release Deps/Install/Debug Deps/Install/Release
  • Then create a “Dev” directory, for FW4SPL
$ mkdir Dev
  • Create into “Dev” the source, build and install directories
$ mkdir Dev/Src Dev/Build Dev/Install
  • Create sub-folders to separate Debug and Release compilations
$ mkdir Dev/Build/Debug Dev/Build/Release Dev/Install/Debug Dev/Install/Release

Dependencies

We need first to build the third-party librairies. We will now fetch the scripts that allow to build them and then launch the compilation.

  • Clone the repository into your source directory of Deps:
$ cd Deps/Src
$ git clone https://github.com/fw4spl-org/fw4spl-deps.git fw4spl-deps
  • Go into fw4spl-deps folder and update to the latest stable version:
$ cd fw4spl-deps
$ git checkout master
  • Go into your Build directory (Debug or Release) : here an example if you want to compile in DEBUG
$ cd ../../..
$ cd Deps/Build/Debug

Project configuration

To build the dependencies, you must configure the project with CMake into the Build folder. As any CMake based project, there are three different ways to perform that.

1. Command-line

In this case, you give all the necessary variables on the command-line in one shot :

$ cd ~/Deps/Build/Debug
$ cmake ../../Src/fw4spl-deps -DCMAKE_INSTALL_PREFIX=~/Deps/Install/Debug -DCMAKE_BUILD_TYPE=Debug
2. NCurses based editor

This editor allows to set the required each variable in a more interactive way :

$ cd ~/Deps/Build/Debug
$ ccmake ../../Src/fw4spl-deps

Then change the following CMake variables:

  • CMAKE_INSTALL_PREFIX: set the install location, here ~/Deps/Install/Debug
  • CMAKE_BUILD_TYPE: set the build type ‘Debug’ or ‘Release’

Press “c” to configure and then “g” to generate the makefiles.

../../_images/osx_cmake_binpkgs.png
3. Qt based gui
$ cd ~/Deps/Build/Debug
$ cmake-gui ../../Src/fw4spl-deps

Like ccmake, change the following CMake variables:

  • CMAKE_INSTALL_PREFIX: set the install location, here ~/Deps/Install/Debug
  • CMAKE_BUILD_TYPE: set the build type ‘Debug’ or ‘Release’

Click on “configure” then “generate”.

Warning

Do not compile debug and release with the same Build and Install folders. If you followed the recommended folder layout, this should be fine.

Compilation

Now you can compile the FW4SPL dependencies with make in the console, it will automaticaly download, build and install each dependency.

$ make all
$ make install_tool

Warning

Do NOT use ninja to compile the dependencies, it causes conflict with qt compilation.

If you get compilation errors at this step, please ensure you installed all the requirements, especially those for Qt.

Source

  • Clone fw4spl repository into your source directory:
$ cd Dev/Src
$ git clone https://github.com/fw4spl-org/fw4spl.git fw4spl
  • Go into fw4spl folder and update to the latest stable version:
$ cd fw4spl
$ git checkout master
  • Go into your Build directory (Debug or Release) : here an example if you want to compile in debug:
$ cd Dev/Build/Debug
  • Now you have to configure the project. You can use one of the three tools explained above.

Also, for FW4SPL, we recommend to use the Ninja generator. It builds faster, and it is much better for everyday use because it is fast as hell to check the files you need to compile. In other words, with Ninja the compilation starts instantly whereas Make spends a dozen of seconds to check what should be compiled before actually compiling something. So if you plan to develop with FW4SPL, go with Ninja. If you only want to give a single try, you can live with the standard “Unix Makefiles” generator.

To use make, here with ccmake :

$ ccmake ../../Src/fw4spl

To use ninja :

$ ccmake -G Ninja ../../Src/fw4spl
  • Change the following cmake arguments
    • CMAKE_INSTALL_PREFIX: set the install location (~/Dev/Install/Debug or Release)
    • CMAKE_BUILD_TYPE: set to Debug or Release
    • EXTERNAL_LIBRARIES: set the install path of the third party libraries you compiled before.(ex : ~/Deps/Install/Debug)
    • PROJECT_TO_BUILD: set the list of the projects you want to build (ex: VRRender, Tuto01Basic ...), each project should be separated by ”;”
    • PROJECT_TO_INSTALL: set the name of the application to install

Note

  • If PROJECT_TO_BUILD is empty, all application will be compiled
  • If PROJECT_TO_INSTALL is empty, no application will be installed
../../_images/osx_cmake_fw4spl.png

Press “c” to configure and then “g” to generate the makefiles.

Note

To generate the projects in release mode, change CMake argument CMAKE_BUILD_TYPE to Release both for fw4spl and fw4spl-deps

Then, according to the generator you chose, build FW4SPL with make :

# Adjust the number of cores depending of the CPU cores and the RAM available on your computer
$ make -j4

Or with ninja:

$ ninja

If you didn’t specify anything in PROJECT_TO_BUILD you may also build specific targets, for instance:

$ ninja Tuto01Basic VRRender

Launch an application

After a successful compilation the application can be launched with the fwlauncher program from FW4SPL. The profile.xml of the application in the build folder has to be passed as argument to the fwlauncher call in the console.

$ bin/fwlauncher Bundles/MyApplication_Version/profile.xml

Example:

$ cd /Dev/Build/Debug
$ bin/fwlauncher Bundles/VRRender_0-9/profile.xml

Extensions

FW4SPL has two main extension repositories:

  • fw4spl-ar: extension of fw4spl repository, contains functionalities for augmented reality (video tracking for instance).
$ cd Dev/Src
$ git clone https://github.com/fw4spl-org/fw4spl-ar.git fw4spl-ar
$ cd fw4spl-ar
$ git checkout master

Then you have to reconfigure your CMake project:

$ cd ../../Build/Debug
$ ccmake .

Modify `̀ ADDITIONAL_PROJECTS`̀ : set the source location of fw4spl-ar and fw4spl-ogre separated by a semi-colon.

~/Dev/Src/fw4spl-ar/;~/Dev/Src/fw4spl-ogre/