oqgraph-dev team mailing list archive

[Andrew McDonnell <bugs@xxxxxxxxxxxxxxxxxxx>]

Hi

> I thought that ubuntu has a way for choosing gcc/g++ version without having to
> manually symlink.

Use update-alternatives

Example:

$ update-alternatives  --list editor
/bin/ed
/bin/nano
/usr/bin/emacs23
/usr/bin/mcedit
/usr/bin/vim.basic
/usr/bin/vim.gtk
/usr/bin/vim.tiny

$ sudo update-alternatives --config editor

# Presents a menu allowing you to choose

$ update-alternatives  --list g++
update-alternatives: error: no alternatives for gcc.

But I have g++-4.3 and g++-4.4 installed, not sure why Squeeze hasn't set
this up; it already was for me on OpenSuse 11.4. Anyways:

$ sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.3 10
$ sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.4 20
update-alternatives: using /usr/bin/g++-4.4 to provide /usr/bin/g++ (g++) in
auto mode.

$ update-alternatives --list g++
/usr/bin/g++-4.3
/usr/bin/g++-4.4


Now its all set up, you can simply

$ sudo update-alternatives --config g++

and choose the one you want it to be



HTH,
Andrew

-- 


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