Dependencies for Debian 11

[ArtemNemenchinsky]

Hi,

I believe this information could be added to README file as Debian is pretty popular.
So here is the list of packages to be installed to compile OLVWM:
xutils
libboost-dev
libx11-dev
libxext-dev
bison
libxpm-dev
libncurses-dev
flex-old (modern flex raises error because of syntax changes)

[ArtemNemenchinsky]

and libxt-dev

[MagnetarRocket]

This should also work with Raspbian/RaspberryPi-OS, so far i need a constant internet conection to make it (possible?), but when i can get it working, i'll give a screenshot.

[MagnetarRocket]

I'll also attempt to rework the flex bits to be "newer"(works with current versions)

Edit: i think this was made with a version of flex that was compatible with the solaris lex me thinks.