sudo apt install cmake
wget https://cppan.org/client/cppan-master-Linux-client.deb 
sudo dpkg -i cppan-master-Linux-client.deb

wget https://www.cmake.org/files/v3.6/cmake-3.6.1-Linux-x86_64.sh
sudo sh cmake-3.6.1-Linux-x86_64.sh --skip-license --prefix=/usr
sudo add-apt-repository ppa:ubuntu-toolchain-r/test 
sudo apt-get update && sudo apt-get install gcc-5
wget https://cppan.org/client/cppan-master-Linux-client.deb 
sudo dpkg -i cppan-master-Linux-client.deb

wget https://cppan.org/client/cppan-master-macOS-client.zip 
unzip cppan-master-macOS-client.zip 
sudo cp cppan /usr/local/bin/

git clone https://github.com/cppan/cppan
cd cppan
git submodule update --init
mkdir build && cd build
cmake ..
# for linux
# cmake .. -DCMAKE_C_COMPILER=gcc-5 -DCMAKE_CXX_COMPILER=g++-5
make -j4