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| author | Skip Montanaro <skip@pobox.com> | 2008-03-05 16:41:09 (GMT) |
|---|---|---|
| committer | Skip Montanaro <skip@pobox.com> | 2008-03-05 16:41:09 (GMT) |
| commit | 86d4e7a146b84546f57d338edf2a587721032658 (patch) | |
| tree | ba7c7314ca2e64189534abbe07233c5cb0bba5a1 /README | |
| parent | f3c0559b5e164e112d408c30e41ac2f2b06c2c85 (diff) | |
| download | cpython-86d4e7a146b84546f57d338edf2a587721032658.zip cpython-86d4e7a146b84546f57d338edf2a587721032658.tar.gz cpython-86d4e7a146b84546f57d338edf2a587721032658.tar.bz2 | |
Elaborate on the role of the altinstall target when installing multiple
versions.
Diffstat (limited to 'README')
| -rw-r--r-- | README | 29 |
1 files changed, 21 insertions, 8 deletions
@@ -968,14 +968,8 @@ created. The only file not installed with a version number in its name is the manual page, installed as "/usr/local/man/man1/python.1" by default. -If you have a previous installation of Python that you don't -want to replace yet, use - - make altinstall - -This installs the same set of files as "make install" except it -doesn't create the hard link to "python<version>" named "python" and -it doesn't install the manual page at all. +If you want to install multiple versions of Python see the section below +entitled "Installing multiple versions". The only thing you may have to install manually is the Python mode for Emacs found in Misc/python-mode.el. (But then again, more recent @@ -988,6 +982,25 @@ installs the Python executable in a place that is not normally on your PATH, you may want to set up a symlink in /usr/local/bin. +Installing multiple versions +---------------------------- + +On Unix and Mac systems if you intend to install multiple versions of Python +using the same installation prefix (--prefix argument to the configure +script) you must take care that your primary python executable is not +overwritten by the installation of a different versio. All files and +directories installed using "make altinstall" contain the major and minor +version and can thus live side-by-side. "make install" also creates +${prefix}/bin/python which refers to ${prefix}/bin/pythonX.Y. If you intend +to install multiple versions using the same prefix you must decide which +version (if any) is your "primary" version. Install that version using +"make install". Install all other versions using "make altinstall". + +For example, if you want to install Python 2.5, 2.6 and 3.0 with 2.6 being +the primary version, you would execute "make install" in your 2.6 build +directory and "make altinstall" in the others. + + Configuration options and variables ----------------------------------- |