[OTClient] Compile on Linux Ubuntu 18.04

Install required libraries:

sudo apt-get install -y build-essential cmake git-core libboost-all-dev libphysfs-dev libssl-dev liblua5.1-0-dev libglew-dev libvorbis-dev libopenal-dev zlib1g-dev g++ make cmake automake libogg-dev libncurses5-dev mercurial

Replace physfs from Ubuntu repository to version that works:

hg clone -r stable-3.0 http://hg.icculus.org/icculus/physfs/ && cd physfs && mkdir build && cd build && cmake .. && make && sudo make install && sudo mv /usr/local/lib/libphysfs.a /usr/lib/x86_64-linux-gnu/.

Download OTClient:

git clone git://github.com/edubart/otclient.git

Go into otclient directory:

cd otclient

Edit file CMakesList.txt Find:

set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -Wl,-Map=${PROJECT_NAME}.map")

Replace with:

set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -fPIC -no-pie -Wl,-Map=${PROJECT_NAME}.map")

Compile OTClient:

mkdir -p build && cd build && cmake .. && make

DONE! You can run OTClient (it's in build directory):

./otclient