configure:error no SDL library found

SDL library not found, need to install SDL library

Installing the SDL library

Search all available instances of libsld1.2:
apt-cache search ^libsdl | grep 1.2
Install all result files with the following
sudo apt-get install libsdl1.2debian libsdl-gfx1.2-5
libsdl-gfx1.2-dev libsdl-gfx1.2-doc libsdl-image1.2
libsdl-image1.2-dbg libsdl-image1.2-dev libsdl-mixer1.2
libsdl-mixer1.2-dbg libsdl-mixer1.2-dev libsdl-net1.2
libsdl-net1.2-dbg libsdl-net1.2-dev libsdl-sound1.2
libsdl-sound1.2-devlibsdl-ttf2.0-0 libsdl-ttf2.0-dev

Refer to the link to the source of the Dashen document.
Reference link: Install SDL library
Other errors: Linphone compilation process problems and their solutions