At this time 2018 the only way to install ftmenu in Ubuntu 18.04 are installing this dependences:
sudo apt-get install git libgtk2.0-dev
next put one by one in command line:
git clone https://github.com/taq/ftmenu
cd ftmenu
./configure
make
sudo su
make install
Then run in terminal with:
ftmenu
you obtain this:
But the only problem is that some icons are big
Well, to obtain this menu firt is neccesary to install xdgmenumaker with this:
sudo apt-get install git txt2tags
git clone https://github.com/gapan/xdgmenumaker
cd xdgmenumaker
make
sudo su
make install
Then you need to follow this steps:
1.- Edit "menu" file under .fluxbox hidden folder:
gedit ~/.fluxbox/menu
2.- Delete manually all text and copy and paste this:
[begin] (fluxbox)
[include] (~/.fluxbox/xdg_menu)
[config] (Configuration)
[workspaces] (Workspaces)
[reconfig] (Reconfigure)
[restart] (Restart)
[exec] (Update Fluxbox Menu) {xdgmenumaker -i -s16 -f fluxbox > ~/.fluxbox/xdg_menu}
[exit] (Exit)
[end]
save and close
3.- Restart fluxbox or close session.
4.- Activate menu, right clic in desktop and clic in "Update Fluxbox Menu"
Here an snapshot of all menu apps when you give right clic:
God Bless