take a rediculious amount of time to run, fail or provide little use
to the profile feedback. (similar to what is already done in 3.5 and
by major Linux distro builds own profiling runs)
enable link time optimizations at build time during a make profile-opt.
Some compilers and toolchains are known to not produce stable code when
using LTO, be sure to test things thoroughly before relying on it.
It can provide a few % speed up over profile-opt alone.
The backport of ensurepip to 2.7.9 allows pip to optionally be installed
or upgraded using the bundled pip provided by the new ensurepip module.
The option can be specified persistently using the configure option:
./configure --with-ensurepip[=upgrade|install|no]
It can also be overridden on either the "install" or "altinstall" targets:
make [alt]install ENSUREPIP=[upgrade|install|no]
For Python 2, the default option is "no" (do not install pip).
* Backports ensurepip to the 2.7 branch
* Backports some of the improved documentation to the 2.7 branch.
* Adds a private backport of the 3.x mock library as test._mock_backport
to enable saner testing of ensurepip.
Key Differences from 3.x:
* Ensurepip does not have any Makefile integration, specifically
it is not ran by default in the Makefile.
* There is no venv module in 2.7, so downstream distributors can
completely disable ensurepip, ideally with a message redirecting
to the correct way to install pip.
* To match the ``python`` command in 2.7, ensurepip will install
the unversioned ``pip`` command as well.
* No-op and hide --default-pip and add --no-default-pip to restore
the 3.x behavor on 2.7.
python --generate-posix-vars in pybuilddir.txt build target by ensuring
that pybuilddir.txt is always regenerated when configure is run and
that the newly built skeleton python does not inadvertently import
modules from previously installed instances.
when building _tkinter. configure has two new options; if used, both must
be specified:
./configure \
--with-tcltk-includes="-I/opt/local/include" \
--with-tcltk-libs="-L/opt/local/lib -ltcl8.5 -ltk8.5"
In addition, the options can be overridden with make:
make \
TCLTK_INCLUDES="-I/opt/local/include" \
TCLTK_LIBS="-L/opt/local/lib -ltcl8.6 -ltk8.6"
Unlike 3.2, 3.3 and 3.x, which add "-IObjects -IPython -IInclude" to
BASECPPFLAGS when building out-of-tree, 2.7 only needs to add -IInclude
(for Python-ast.h and graminit.h).
Martin Panter
Gregory P. Smith ext:(%20%5BGoogle%20Inc.%5D)
doko@ubuntu.com
Zachary Ware
Victor Stinner
Brett Cannon
Benjamin Peterson
Ned Deily
Donald Stufft
Charles-François Natali
Serhiy Storchaka
Martin v. Löwis
Eric V. Smith
Ezio Melotti
doko@python.org
Christian Heimes
Trent Nelson