我总是收到以下错误消息
freebsd@paratudo:~/anythingCollector % sudo pip3 install matplotlib
Collecting matplotlib
Using cached matplotlib-1.5.0.tar.gz
Complete output from command python setup.py egg_info:
IMPORTANT WARNING:
pkg-config is not installed.
matplotlib may not be able to find some of its dependencies
============================================================================
Edit setup.cfg to change the build options
BUILDING MATPLOTLIB
matplotlib: yes [1.5.0]
python: yes [3.4.3 (default, Nov 5 2015, 01:26:40) [GCC
4.2.1 Compatible FreeBSD Clang 3.4.1
(tags/RELEASE_34/dot1-final 208032)]]
platform: yes [freebsd10]
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.10.1]
dateutil: yes [dateutil was not found. It is required for date
axis support. pip/easy_install may attempt to
install it after matplotlib.]
pytz: yes [using pytz version 2015.7]
cycler: yes [cycler was not found. pip will attempt to
install it after matplotlib.]
tornado: yes [using tornado version 4.3]
pyparsing: yes [using pyparsing version 2.0.6]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
freetype: no [The C/C++ header for freetype2 (ft2build.h)
could not be found. You may need to install the
development package.]
png: yes [version 1.6.18]
qhull: yes [pkg-config information for 'qhull' could not be
found. Using local copy.]
OPTIONAL SUBPACKAGES
sample_data: yes [installing]
toolkits: yes [installing]
tests: yes [nose 0.11.1 or later is required to run the
matplotlib test suite. "setup.py test" will
automatically download it. Install nose 0.11.1 or
later to run matplotlib.test() / using
unittest.mock]
toolkits_tests: yes [nose 0.11.1 or later is required to run the
matplotlib test suite. "setup.py test" will
automatically download it. Install nose 0.11.1 or
later to run matplotlib.test() / using
unittest.mock]
OPTIONAL BACKEND EXTENSIONS
macosx: no [Mac OS-X only]
qt5agg: no [PyQt5 not found]
qt4agg: no [PySide not found; PyQt4 not found]
gtk3agg: no [Requires pygobject to be installed.]
gtk3cairo: no [Requires cairocffi or pycairo to be installed.]
gtkagg: no [Requires pygtk]
tkagg: no [TKAgg requires Tkinter.]
wxagg: no [requires wxPython]
gtk: no [Requires pygtk]
agg: yes [installing]
cairo: no [cairocffi or pycairo not found]
windowing: no [Microsoft Windows only]
OPTIONAL LATEX DEPENDENCIES
dvipng: no
ghostscript: no
latex: no
pdftops: no
OPTIONAL PACKAGE DATA
dlls: no [skipping due to configuration]
============================================================================
* The following required packages can not be built:
* freetype
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-74bls8kw/matplotlib
两行让我注意：
pkg-config is not installed.
但我无法安装，而且我不确切知道它是什么
freetype: no
已安装，如下面的日志中所示，但错误仍然存在
freebsd@paratudo:~/anythingCollector % sudo pkg install freetype
Updating FreeBSD repository catalogue...
FreeBSD repository is up-to-date.
All repositories are up-to-date.
Checking integrity... done (0 conflicting)
The most recent version of packages are already installed
如何解决这个问题，安装matplotlib？
答案 0 :(得分：3)
我的朋友帮我解决了这个问题：
pkg install pkgconf
我正在搜索pkgconfig，但在存储库中名称为pkgconf