[SOLVED] gcc not recognized in QT after installation

[SGaist]

One thing you can do that might help is to install the dev packages of Qt from Ubuntu's repository but at this point there seems to be strange things going on. Not finding build-essential is really not normal, what sources does apt use to retrieve the packages ?

[developSomething]

this is what the terminal shows:

x@x-ThinkCentre-A58:~$ apt
apt 1.0.1ubuntu2 für i386, kompiliert am Oct 28 2014 20:57:14
Usage: apt [options] command
CLI for apt.
Basic commands:
list - list packages based on package names
search - search in package descriptions
show - show package details
update - update list of available packages
install - install packages
remove - remove packages
upgrade - upgrade the system by installing/upgrading packages
full-upgrade - upgrade the system by removing/installing/upgrading packages
edit-sources - edit the source information file

[SGaist]

What does apt-cache search build-essential return ?

[SGaist]

Also, what do you have in /etc/apt/sources.list ?

[developSomething]

@SGaist
What does apt-cache search build-essential return ?

It returns nothing.

and this is the content of /etc/apt/sources.list:

# deb cdrom:[Ubuntu 14.04.2 LTS _Trusty Tahr_ - Release i386 (20150218.1)]/ trusty main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

## Major bug fix updates produced after the final release of the
## distribution.

## 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.

## 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.

## 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.


## 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 http://archive.ubuntu.com/ubuntu trusty restricted
deb-src http://extras.ubuntu.com/ubuntu trusty main

[SGaist]

Silly question but did you run apt-get updateafter you installed your system ?

[developSomething]

Now that i have tried everything mentioned another idea came to my mind:

Could it be possible it is my IP which is disliked by ubuntu? therefor only offering certain packages, excluding dev?

(moderation comment: we don't think there is a global conspiracy on Ubuntu packages, and looks like the problem was solved below)

[JKSH]

Hi,

@developSomething said:

and this is the content of /etc/apt/sources.list:

I see that you don't have any official repositories available. See https://help.ubuntu.com/community/Repositories/Ubuntu to add them. (At the very least, you need the "Main" repository. I also suggest adding "Universe" and "Restricted" to make Ubuntu nicer to useable.)

Then, try downloading the packages again.

isn't there a more complete package for qt-installation? I mean this is really the hard way to get one error fixed after the other. One surprise follows the next.

I've been using Ubuntu as a secondary computer for many years now. All this while, the only things I've needed to do to develop with Qt on Ubuntu are:

1. Install Ubuntu
2. Install g++
3. Install OpenGL development libraries (Mesa)
4. Install Qt

You're having difficulties because your machine has been misconfigured somewhere. (Usually,some repositories are enabled by default as soon as you install Ubuntu.)

Maybe this is kind of a location-based-service, meaning, well...
In my neighborhood there are living a lot of people from all over the world, including many muslims.
Could it be possible it is my IP which is disliked by ubuntu? therefor only offering certain packages, excluding dev?

Given that Canonical wants Ubuntu to spread all over the world, I'd be very surprised if they did this. However, you could ask at https://askubuntu.com to verify.

Anyway, I don't see how Muslims are related to your issue.

[developSomething]

@JKSH
thanks to your little install guide now everything works fine!

all i had to do was remove the whole ubuntu installation and restart from scratch.

Surprisingly the repositories were all set up correctly by default, maybe it was because i have chosen the default US-english installation instead of the german one ..^^

I would even be willing to add SOLVED to the title of the thread
if only i knew how to?

[koahnig]

@developSomething
How to mark as solved?

Simply go to the first post where you started. Press the gear wheel on the very right and select the left (Edit) symbol.
Go to your title line. Add there [solved] in the beginning of line.