Install Remmina on Debian 9

install-remmina-deb-stretch.sh

# Remove libssl-dev if installed
sudo apt purge libssl-dev

# Update repos and install dependinces
sudo apt update -y
sudo apt install build-essential git-core libssh-dev cmake libx11-dev libxext-dev libxinerama-dev \
  libxcursor-dev libxdamage-dev libxv-dev libxkbfile-dev libasound2-dev libcups2-dev libxml2 libxml2-dev \
  libxrandr-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
  libxi-dev libavutil-dev libjson-glib-dev\
  libavcodec-dev libxtst-dev libgtk-3-dev libgcrypt11-dev  libpulse-dev \
  libvte-2.91-dev libxkbfile-dev libtelepathy-glib-dev libjpeg-dev \
  libgnutls28-dev libgnome-keyring-dev libavahi-ui-gtk3-dev libvncserver-dev \
  libappindicator3-dev intltool libsecret-1-dev libwebkit2gtk-4.0-dev libsystemd-dev

# Remove any prior traces of remmina
sudo apt purge "remmina*" "libfreerdp*" "libwinpr*" "freerdp*"


# Clone a copy of FreeRDP into a folder in user root called remmina_dlevel
mkdir ~/remmina_devel
cd ~/remmina_devel
git clone https://github.com/FreeRDP/FreeRDP.git
cd FreeRDP

# Compile & Install FreeRDP
cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_SSE2=ON -DWITH_CUPS=on -DWITH_PULSE=on -DCMAKE_INSTALL_PREFIX:PATH=/opt/remmina_devel/freerdp . 
make && sudo make install

echo /opt/remmina_devel/freerdp/lib | sudo tee /etc/ld.so.conf.d/freerdp_devel.conf > /dev/null
sudo ldconfig
# Add FreeRDP Shorcut to the /usr/local/bin folder
sudo ln -s /opt/remmina_devel/freerdp/bin/xfreerdp /usr/local/bin/

# Clone a copy of Remmina into a folder in user root called remmina_dlevel
cd ~/remmina_devel
git clone https://github.com/FreeRDP/Remmina.git


# Compile & Install Remmina
cd Remmina
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX:PATH=/opt/remmina_devel/remmina -DCMAKE_PREFIX_PATH=/opt/remmina_devel/freerdp --build=build .
make && sudo make install

# Add Remmina Shorcut to the /usr/local/bin folder
sudo ln -s /opt/remmina_devel/remmina/bin/remmina /usr/local/bin/

This is a small script I found on the internet to install the Remmina RDP client on a Debian 9 install.