Difference between revisions of "Octave in home directory"

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Installing in your home directory is a method to install GNU Octave next to your repository installation at the same time. This works with every Linux distribution and is especially for old Ubuntu LTS versions very useful!
#REDIRECT [[Building]]
One advantage is that you do not clutter your system by running ''sudo make install''.
Another advantage is that you can keep your Octave installation that is provided by your distribution.
== 1. Install dependencies ==
Take a look at [[Building for Linux systems]] and [[Building]].
General information you can gather from the `./configure` summary or read the {{Path|INSTALL.OCTAVE}} file that comes distributed with Octave.
== 2. Download Octave Sourcecode ==
Take a release from ftp.gnu.org, e.g. 3.8.2.
  wget ftp://ftp.gnu.org/gnu/octave/octave-3.8.2.tar.bz2
  tar xfvj octave-3.8.2.tar.bz2
  cd octave-3.8.2/
or clone current development branch
  hg clone http://hg.octave.org/octave/
  cd octave/
== 3. configure ==
Only if you want to install from mercurial ''(hg.octave.org)'', you have to do first:
Now it's time to run ./configure with a prefix that points to a directory in your home directory. E.g., my username is ''maxpower'' and I want to install Octave to ''~/.octave38/''
./configure --prefix=/home/maxpower/.octave38/
An alternative is presented in section 6. Use it if you intent to compile from yourself many packages.
Pay attention to the configure summary at the end (See chapter 1), install missing required packages if any.
== 4. make & make install ==
After you have successful configured octave without errors ''(warnings may be okay)'', you can run ''make''. If you have a dual core CPU, you can run make with two threads like that (increase -j number if you have more CPU cores).
make -j2
This may take now ~30-300 Minutes (depends on the speed of your cpu and the size of your RAM)
Feel free to run ''make check'' too.
When ''make -j2'' finished without errors, simply run '''without''' sudo/root permissions
make install
Octave will now be installed to either /home/maxpower/.octave38/, either ${HOME}/usr
== 5. create a smart bashrc entry ==
echo "alias octave38='~/.octave38/bin/octave'" >> ~/.bashrc
. ~/.bashrc # this will update your bashrc without doing logout and login!
If you simply enter ''octave'', you'll start your repository installation provided by your distribution. But when you enter ''octave38'', you'll start your new snappy octave version installed to your home directory.
== 6. Managing your own program hierarchy (optional) ==
If you intend to compile for yourself a lot of utilities, you may use a specific "usr" hierachy into your own dir (Linux from scratch way). Go back to step 2, and configure octave as:
./configure --prefix=${HOME}/usr
The other steps (make; make install) do not change. In order to use your own hierachy, you should set a few environment variables in your .profile:
  # set LD_LIBRARY_PATH if not set
  (echo $LD_LIBRARY_PATH | grep -q lib) || export LD_LIBRARY_PATH="/usr/local/lib:$HOME/usr/lib:$HOME/usr/local/lib"
  # set PATH so it includes user's private bin if it exists
  if [ -d "$HOME/bin" ] ; then
        (echo $PATH | grep -q $HOME/usr/bin) || export PATH="$HOME/bin:$HOME/usr/bin:$HOME/usr/local/bin:$PATH"
  # set MANPATH so it includes user's private bin if it exists
  if [ -d "$HOME/usr/share/man" ] ; then
    (echo $MANPATH | grep -q $HOME/usr/share/man) || export MANPATH="$HOME/usr/local/share/man:$HOME/usr/share/man:`manpath -q`"
  if [ -d "$HOME/usr/share/info" ]; then
    export INFOPATH="$INFOPATH:$HOME/usr/share/info"
  if [ -d "$HOME/usr/lib/python" ]; then
    (echo $PYTHONPATH | grep -q $HOME/usr/lib/python) || export PYTHONPATH="$HOME/usr/local/lib/python:$HOME/usr/lib/python"
  if [ -d "$HOME/usr/lib/pkgconfig" ]; then
    (echo $PKG_CONFIG_PATH | grep -q $HOME/usr/lib/pkgconfig) || export PKG_CONFIG_PATH="$HOME/usr/lib/pkgconfig"
This way, most ordinary commands like "man octave", "info octave", or launching octave itself, will first explore your own hierachy.
== Uninstall ==
==== Method A ====
If you're still have the compiled source folder, just do ''make uninstall'' from it. And don't forget to remove the ''alias octave38'' entry in your ''~/.bashrc''.
==== Method B ====
Just delete (e.g. ''rm -rf ~/.octave38/'') the install folder and remove the ''alias octave38'' entry from your ''~/.bashrc''.

Latest revision as of 04:52, 26 October 2019

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