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Document incompatibility between wheel package and ssl module

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Close #543.
This commit is contained in:
Daniele Varrazzo 2017-06-14 01:45:47 +01:00
parent 338dbe70a6
commit 9b4de93bdc
1 changed files with 12 additions and 3 deletions
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doc/src/install.rst
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@ -56,11 +56,20 @@ using something like ``pip install -U pip``)
.. note::
The binary packages come with their own versions of a few C libraries,
among which libpq and libssl, which will be used regardless of other
among which ``libpq`` and ``libssl``, which will be used regardless of other
libraries available on the client: upgrading the system libraries will not
upgrade the libraries used by `!psycopg2`. Please build `!psycopg2` from
source if you want to maintain binary upgradeability.
.. warning::
Because the `!psycopg` wheel package uses its own ``libssl`` binary, it is
incompatible with other extension modules binding with ``libssl`` as well,
for instance the Python `ssl` module: the result will likely be a
segfault. If you need using both `!psycopg2` and other libraries using
``libssl`` please :ref:`install psycopg from source
<install-from-source>`.
If you prefer to use the system libraries available on your client you can use
the :command:`pip` ``--no-binary`` option:
@ -105,8 +114,8 @@ Build prerequisites
These notes illustrate how to compile Psycopg on Linux. If you want to compile
Psycopg on other platforms you may have to adjust some details accordingly.
Psycopg is a C wrapper to the libpq PostgreSQL client library. To install it
from sources you will need:
Psycopg is a C wrapper around the libpq_ PostgreSQL client library. To install
it from sources you will need:
- A C compiler.