Les paquets dont tu as besoin sont probablement ceux-ci :
[mono]libsdl-ttf2.0-dev libgnome-keyring-dev libgstreamer1.0-dev[/mono]
Ce dernier paquet par contre n’est disponible qu’à partir de Jessie.
Voici la liste complète des dépendances de compilation de gambas 3.5.4 :
[mono]debhelper (>= 9), dh-autoreconf, libpq-dev, libv4l-dev [linux-any], libv4l-dev [kfreebsd-any], libcam-dev [kfreebsd-any], libmysqlclient-dev, libbz2-dev, libglew-dev, libqt4-dev, libqt4-opengl-dev, libcurl4-openssl-dev, libsdl-mixer1.2-dev, libsqlite0-dev, libxml2-dev, libxslt1-dev, kdelibs5-dev, libssl-dev, zlib1g-dev, unixodbc-dev, libsqlite3-dev, libgtk2.0-dev, libxt-dev, pkg-config, mesa-common-dev, libsdl-sound1.2-dev, libsdl-image1.2-dev, libsdl-gfx1.2-dev, libsdl-ttf2.0-dev, libpcre3-dev, libsdl1.2-dev, libjpeg-dev, libpng12-dev, libpoppler-private-dev, libimlib2-dev, librsvg2-dev, bzip2, gettext, libxtst-dev, libffi-dev, libdbus-1-dev, libgnome-keyring-dev, libgtkglext1-dev, linux-libc-dev [linux-any], libc0.1 [kfreebsd-any], libqtwebkit-dev, libgsl0-dev, libncurses5-dev, libtool, libgmime-2.6-dev, llvm-dev (>> 1:3.1) [amd64 armel armhf i386 kfreebsd-amd64 kfreebsd-i386 mips mipsel powerpc s390 s390x sparc], libgmp-dev, libopenal-dev, libalure-dev, libgstreamer1.0-dev, libgstreamer-plugins-base1.0-dev, postgresql-server-dev-all[/mono]