BUILDING IN LINUX
mkdir Projetos
mkdir Gameengine
clone the repository
git clone git://git.code.sf.net/p/sgfabric/code sgf
for me
git clone ssh://carygrant@git.code.sf.net/p/sgfabric/code sgf



install cmake
apt-get install cmake

sudo apt-get install gcc-multilib lib32stdc++6 libx32stdc++6
 
 before use cmake:

 
1 - build SDL2
cd ExternalLibs/SDL2-2.0.0
./configure
make
sudo make install

2 - install freetype
sudo apt-get install libfreetype6-dev
it is possible to use the SDL_ttf png code to build and install it too
3 - install png
sudo apt-get install libpng++-dev
it is possible to use the SDL_Image png code to build and install it too

4 - configure tiff
# must configure tiff to generate the header file
# todo: use cmake to generate this file
cd ExternalLibs/SDL2_image-2.0.0/external/tiff-4.0.3
./configure

5 - configure libwebp


mkdir build
cd build 
cmake ..