Ubuntu comes with Python 2.7.2+ pre-installed. (I also downloaded the python dev packages.) Because of another issue I'm having (Explained in extreme depth in How do I replace/update the version of the expat library used by Apache? ), Graham Dumpleton told me my distro had explicitly built Python in a way to use an external pyexpat implementation, so causing my issue. He also said I could build Python myself from source code to resolve the issue. How would I do this on Ubuntu? (Keep in mind I'm new to Linux.)
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If you don't get an answer here, this question may be seen by more Ubuntu folks at askubuntu.comEric Wilson– Eric Wilson2011-11-11 16:45:41 +00:00Commented Nov 11, 2011 at 16:45
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1This is not really ubuntu specific so I think it's fine over here. The various stack exchange sites have considerable overlap in my opinion.Noufal Ibrahim– Noufal Ibrahim2011-11-11 16:51:17 +00:00Commented Nov 11, 2011 at 16:51
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5 Answers
At a shell prompt (in a terminal), run
sudo apt-get install build-essentialThis will fetch all the common packages you need to build anything (e.g. the compiler etc.).
Then run
sudo apt-get build-dep python2.7This will fetch all the libraries you need to build python.
Then download the source code for python and decompress it into a directory.
go there and run
./configure --prefix=/path/where/you/want/python/installedThen
makeand thenmake installto get it built and installed:make && make install
If you hit snags on the way, ask back here and I'll try to offer some guidance.
5 Comments
Brian Schmitz
When I ran
sudo apt-get build-dep python2.7 it said "E: You must put some 'source' URIs in your sources.list". Any idea? (Also, minor side note: I think you meant to write sudo apt-get install build-essential without the -s at the end of "essentials" in the first command.)
Graham Dumpleton
They also need the --enable-shared option when building Python as they want to use it with mod_wsgi and Python doesn't build shared libraries by default which isn't ideal for dynamically loading embedded systems.
Brian Schmitz
What are "they"? What are you referring to? Also, before that, how do I resolve the error message? Do I need to add something to sources.list?
Noufal Ibrahim
Brian: You might need to add the
deb-src lines along with the deb lines in your sources.list.
Omid Zarinmahd
I think its better to altinstall instead of install docs.python.org/3/using/unix.html#building-python
The best way to build "hot" very recent python (from github) is as follows:
sudo apt-get update \
&& sudo apt-get install -y build-essential git libexpat1-dev libssl-dev zlib1g-dev \
libncurses5-dev libbz2-dev liblzma-dev \
libsqlite3-dev libffi-dev tcl-dev linux-headers-generic libgdbm-dev \
libreadline-dev tk tk-dev
git clone https://github.com/python/cpython.git
cd cpython && ./configure --prefix=/usr \
--enable-loadable-sqlite-extensions \
--enable-shared \
--with-lto \
--enable-optimizations \
--with-system-expat \
--with-system-ffi \
--enable-ipv6 --with-threads --with-pydebug --disable-rpath \
&& make \
&& sudo make install
It builds the very recent python from the sources on github.
With this I have built Python 3.8.0a0 (heads/master:077059e0f0, Aug 10 2018, 21:36:32).
5 Comments
Olav Grønås Gjerde
I would run sudo make altinstall so you do not overwrite the system default python3 version. If you for example execute make install on Ubuntu 18.04 you will overwrite /usr/bin/python3
hjpotter92
For building w/ pydebug, your
make should be make EXTRA_CFLAGS="-DPy_REF_DEBUG"
orlp
On my Xubuntu 18.04 machine using Python 3.7.0 source it says
WARNING: unrecognized options: --with-threads.
ScipioAfricanus
will this build with bz2? I am running into this issue while trying to import pandas.. thanks.
nurettin
it won't buildl bz2
You may try using pyenv. I haven't tried it yet. But looking at the sources, it seems very mature to accomplish an installation of any CPython-interpreter on any *ix-system.
1 Comment
monkut
I agree, if your serious about development with python you'll find yourself using multiple versions, and pyenv takes care of this for you. but you really want to install pyenv first before installing any version of python (if possible...)
The superior solution to building Python yourself is pythonbrew, which automates the process and also allows you to not only install several different versions, but also easily select between them.
In 2016, pyenv and PyRun are the most viable solutions.
3 Comments
Noufal Ibrahim
+1 for the tool. How mature is it? Do you have personal experience?
funky-future
This tool is no longer maintained.
You can use checkinstall to install from source code instead of make install.
Once you download the source code, navigate to the home folder and use below commands
./configure
make
sudo checkinstall
This creates a debian / RPM package and then installs it. Checkinstall keeps a tab of all the files modifications and dependencies and makes the whole uninstalling process easier. Since you have a .deb package, it's much easier to install on many systems and handle with a package manager.
