Installé gcc

Essaye d'installer le paquet "build-essential".

Donne le retour de la commande :
lsb_release -d

Utilise cette commande, et donne le retour :
cat /etc/apt/sources.list

Si tu n'as qu'un accès à la console, essaye la commande :
cat /etc/apt/sources.list >> /chemin/vers/fichier.txt
où /chemin/vers/fichier.txt est le lien vers un fichier que tu pourras récupérer via sftp/autre.

___/\_canarder_/\___
~Waterfox|Palemoon~

Oublions la deuxième commande ^^

Le fichier est correct, essaye ces commandes :
sudo apt-get update
sudo apt-get autoclean
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get install dpkg-dev build-essential

Si ça marche toujours pas, essaye d'aller sur Freenode #ubuntu-fr, ils pourront sûrement t'aider.

___/\_canarder_/\___
~Waterfox|Palemoon~

Pareil j'ai fait la même commande pour build-essential, ça marchait pas.

Il me dit : le paquet "Build-essential" n'a pas de version susceptible d'être installé

Descripttion : Ubuntu 14.04 LTS

hafid@hafid-virtual-machine:~$ cat /etc/apt/sources.list
#deb cdrom:[Lubuntu 14.04 LTS _Trusty Tahr_ - Release amd64 (20140416.2)]/ trusty main multiverse restricted universe

# See https://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ trusty main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty universe
deb http://fr.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://fr.archive.ubuntu.com/ubuntu/ trusty multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu/ trusty-security main restricted
deb-src http://security.ubuntu.com/ubuntu/ trusty-security main restricted
deb http://security.ubuntu.com/ubuntu/ trusty-security universe
deb-src http://security.ubuntu.com/ubuntu/ trusty-security universe
deb http://security.ubuntu.com/ubuntu/ trusty-security multiverse
deb-src http://security.ubuntu.com/ubuntu/ trusty-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu/ trusty partner
# deb-src http://archive.canonical.com/ubuntu/ trusty partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu/ trusty main
deb-src http://extras.ubuntu.com/ubuntu/ trusty main

hafid@hafid-virtual-machine:~$ cat /etc/apt/sources.list > /chemin/vers/fichier.txt
bash: /chemin/vers/fichier.txt: Aucun fichier ou dossier de ce type

Tout a était bien installé,

merci CANARDER.

juste si vous avez du temps je souhaiterai savoir brièvement quel était le pbm on qu'est ce qu'on a fait via ces commandes.

Merci encore une foie.