即使安装 graphviz 并确保目录中存在 cgraph.h 后，我也无法安装 pygraphviz。
我还手动指定了安装目录。例如安装路径
致命错误 C1083：无法打开包含文件：'graphviz/cgraph.h'：没有这样的文件或目录
寻找任何和所有建议。使用Windows。
C:\Users\mmcgown\Desktop\School\MSDS452\pygraphviz-1.5>python setup.py install --prefix=C:\Program_Files_(x86)\Graphviz2.38 --include-path=C:\Program_Files_(x86)\Graphviz2.38\include\ --library-path=C:\Program_Files_(x86)\Graphviz2.38\lib\
running install
running build
running build_py
running egg_info
writing pygraphviz.egg-info\PKG-INFO
writing dependency_links to pygraphviz.egg-info\dependency_links.txt
writing top-level names to pygraphviz.egg-info\top_level.txt
reading manifest file 'pygraphviz.egg-info\SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching '*.png' under directory 'doc'
warning: no files found matching '*.html' under directory 'doc'
warning: no files found matching '*.txt' under directory 'doc'
warning: no files found matching '*.css' under directory 'doc'
warning: no previously-included files matching '*~' found anywhere in distribution
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files matching '.svn' found anywhere in distribution
no previously-included directories found matching 'doc\build'
writing manifest file 'pygraphviz.egg-info\SOURCES.txt'
running build_ext
building 'pygraphviz._graphviz' extension
C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.24.28314\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MT -IC:\Program_Files_(x86)\Graphviz2.38\include\ -IC:\Users\mmcgown\AppData\Local\Continuum\anaconda3\include -IC:\Users\mmcgown\AppData\Local\Continuum\anaconda3\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.24.28314\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.24.28314\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /Tcpygraphviz/graphviz_wrap.c /Fobuild\temp.win-amd64-3.7\Release\pygraphviz/graphviz_wrap.obj
graphviz_wrap.c
pygraphviz/graphviz_wrap.c(2987): fatal error C1083: Cannot open include file: 'graphviz/cgraph.h': No such file or directory
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.24.28314\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
我使用 graphviz.org 上最新的 win64 可执行文件安装了最新的 graphviz
graphviz 2.49 win64
然后使用以下命令进行安装对我有用
pip install --global-option=build_ext --global-option="-IC:\Program Files\Graphviz\include" --global-option="-LC:\Program Files\Graphviz\lib" pygraphviz
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