When I try to install gcc-4.6 on Ubuntu15.10 (32bit edition) using apt-get, but I can't.

I tried it, but Ubuntu displayed these error messages:

$ sudo apt-get install gcc-4.6
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package g++-4.6 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Where can I find "another source"?

  • 1
    Possible duplicate of Old version of gcc for new Ubuntu – muru Feb 18 '16 at 1:46
  • Haplo's answer will work too, you just need change the PPA entry to use trusty instead of wily. – muru Feb 18 '16 at 4:41
  • @muru thanks a lot. I'll try to write my own PPA if I have time to learn about PPA. :) – yukkie Feb 18 '16 at 4:50

I added 2 lines in /etc/apt/sources.list:

deb     http://archive.ubuntu.com/ubuntu/ trusty universe  
deb-src http://archive.ubuntu.com/ubuntu/ trusty universe

It seems to work fine. Solved.


I found this the PPA link is at the bottom. Not sure how safe this is but I've added random PPA's and had no issues.

  • I doesn't work in my environment. Aftest "sudo apt-get update" I got the error message below. W: Failed to fetch launchpad.net/~h-rayflood/+archive/ubuntu/gcc-upper/dists/wily/… HttpError404 E: Some index files failed to download. They have been ignored, or old ones used instead. I have installed 32bit versioin of Ubuntu 15.10 because of project restrictions. This error message seems to be end of support of older version 32bit gcc. Thanks! – yukkie Feb 18 '16 at 4:23

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