Question

我使用this guide来安装＆＃34;科学堆栈＆＃34; for Python（OSX 10.9.2，brewed Python 2.7.6，IPython 2.0，matplotlib 1.3.1，libpng 1.6.10）。一切都很好看。

然而，试图在--pylab=inline的IPython笔记本环境中运行一个简单的情节给我这个错误：

/usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/core/formatters.py:239: FormatterWarning: Exception in image/png formatter: Could not create write struct FormatterWarning,

在终端中它说：libpng warning: Application built with libpng-1.5.17 but running with 1.6.10

据我所知，我没有安装其他libpng。我尝试从libpng删除以/usr/local/开头的所有文件并重新安装所有内容，但无济于事。构建matplotlib（pip install matplotlib）的输出包含：

BUILDING MATPLOTLIB
            matplotlib: yes [1.3.1]
                python: yes [2.7.6 (default, Mar 16 2014, 15:04:47)  [GCC
                        4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.38)]]
              platform: yes [darwin]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.8.1]
              dateutil: yes [using dateutil version 2.2]
               tornado: yes [using tornado version 3.2]
             pyparsing: yes [using pyparsing version 2.0.1]
                 pycxx: yes [Couldn't import.  Using local copy.]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: yes [version 17.2.11]
                   png: yes [version 1.6.10]

OPTIONAL SUBPACKAGES
           sample_data: yes [installing]
              toolkits: yes [installing]
                 tests: yes [using nose version 1.3.1]

OPTIONAL BACKEND EXTENSIONS
                macosx: yes [installing, darwin]
                qt4agg: yes [installing, Qt: 4.8.6, PyQt4: 4.10.4]
               gtk3agg: no  [Requires pygobject to be installed.]
             gtk3cairo: no  [Requires cairo to be installed.]
                gtkagg: no  [Requires pygtk]
                 tkagg: yes [installing, version 81008]
                 wxagg: no  [requires wxPython]
                   gtk: no  [Requires pygtk]
                   agg: yes [installing]
                 cairo: no  [cairo not found]
             windowing: no  [Microsoft Windows only]

OPTIONAL LATEX DEPENDENCIES
                dvipng: no
           ghostscript: no
                 latex: no
               pdftops: no

所以在我看来matplotlib应该针对libpng 1.6.10进行编译？有人可以帮我弄清楚发生了什么吗？

Answer 1

@ glenn-randers-pehrson提供答案的扩展：

pip uninstall matplotlib
cd /opt/X11/include/libpng15
mv png.h _png.h
mv pngconf.h _pngconf.h
mv pnglibconf.h _pnglibconf.h
pip install matplotlib
(if needed remove the old directory or use the force option)

(now move the .h files back to their original locations)

Answer 2

查找以＆＃34; png＆＃34;开头的旧标头文件（png.h，pngconf.h，或许其他人）并删除它们。

Answer 3

为了记录（从以上评论开始）：

删除X11

launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
sudo rm -rf /opt/X11* /Library/Launch*/org.macosforge.xquartz.* /Applications/Utilities/XQuartz.app /etc/*paths.d/*XQuartz
sudo pkgutil --forget org.macosforge.xquartz.pkg

然后，

如果安装了matplotlib / python，请根据需要运行以下命令：

pip uninstall matplotlib
pip uninstall ipython

然后，

pip install matplotlib
pip install ipython

如有必要，可以从https://www.macupdate.com/app/mac/26593/xquartz重新安装XQuartz。

[注意：这会重新添加/opt/X11/include/libpng15/png.h等文件，但之后ipython工作正常。]

Answer 4

虽然有多个libpng副本有点荒谬，但这个问题是由pip编译器和python的路径不同引起的。您也可以通过路径解决此问题，然后重新编译，但上述解决方案也可以。

libpng版本在全新安装IPython时不兼容

4 个答案: