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Backport PR #17831 on branch v3.3.x (BLD: default to system freetype on AIX) #17833

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Merged
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Jul 4, 2020
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Backport PR #17831 on branch v3.3.x (BLD: default to system freetype on AIX) #17833

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13 changes: 7 additions & 6 deletions INSTALL.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -170,12 +170,13 @@ etc., you can install the following:
FreeType and Qhull
------------------

Matplotlib depends on `FreeType <https://www.freetype.org/>`_ (>= 2.3), a
font rendering library, and on `Qhull <http://www.qhull.org/>`_ (>= 2015.2),
a library for computing triangulations. By default, Matplotlib downloads and
builds its own copy of FreeType (this is necessary to run the test suite,
because different versions of FreeType rasterize characters differently), and
uses its own copy of Qhull.
Matplotlib depends on `FreeType <https://www.freetype.org/>`_ (>=
2.3), a font rendering library, and on `Qhull
<http://www.qhull.org/>`_ (>= 2015.2), a library for computing
triangulations. By default (except on AIX) Matplotlib downloads and
builds its own copy of FreeType (this is necessary to run the test
suite, because different versions of FreeType rasterize characters
differently), and uses its own copy of Qhull.

To force Matplotlib to use a copy of FreeType or Qhull already installed in
your system, create a :file:`setup.cfg` file with the following contents:
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4 changes: 2 additions & 2 deletions setupext.py
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Expand Up @@ -137,8 +137,8 @@ def download_or_cache(url, sha):
config.read(setup_cfg)
options = {
'backend': config.get('rc_options', 'backend', fallback=None),
'system_freetype': config.getboolean('libs', 'system_freetype',
fallback=False),
'system_freetype': config.getboolean(
'libs', 'system_freetype', fallback=sys.platform.startswith('aix')),
'system_qhull': config.getboolean('libs', 'system_qhull',
fallback=False),
}
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