
- [X] I looked for a similar issue and couldn't find any.
- [X] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [X] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...).

Trying to build **gpac** from source under Ubuntu 20.04 . Failed while installation:

```console
(Reading database ... 584705 files and directories currently installed.)
Preparing to unpack .../gpac/gpac_1.1.0-6_amd64.deb ...
Unpacking gpac (1.1.0-6) over (1.1.0-6) ...
dpkg: dependency problems prevent configuration of gpac:
 gpac depends on sdl; however:
  Package sdl is not installed.

dpkg: error processing package gpac (--install):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.9.1-1) ...
Errors were encountered while processing:
 gpac
```



SDL2 support instead of SDL ...
This is a GitHub Issue
repo:gpac
owner:gpac
Title : SDL2 support instead of SDL ...
Issue date:

--- start body ---

- [X] I looked for a similar issue and couldn't find any.
- [X] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [X] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...).

Trying to build **gpac** from source under Ubuntu 20.04 . Failed while installation:

```console
(Reading database ... 584705 files and directories currently installed.)
Preparing to unpack .../gpac/gpac_1.1.0-6_amd64.deb ...
Unpacking gpac (1.1.0-6) over (1.1.0-6) ...
dpkg: dependency problems prevent configuration of gpac:
 gpac depends on sdl; however:
  Package sdl is not installed.

dpkg: error processing package gpac (--install):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.9.1-1) ...
Errors were encountered while processing:
 gpac
```



--- end body ---
