os x 10.5 上的 easy_install lxml 困难答案

【问题标题】：easy_install lxml difficulties on os x 10.5os x 10.5 上的 easy_install lxml 困难
【发布时间】：2012-03-06 05:30:24
【问题描述】：

我正在尝试在我的计算机上安装 lxml，但遇到了困难。任何人都可以帮忙吗？我提供了尝试执行“easy_install lxml”时得到的终端输出。我正在运行 Mac OS X 10.5 和 Python 版本 2.7.2。谢谢！：

Macintosh-8:~ momdad$ easy_install lxml
Searching for lxml
Reading http://pypi.python.org/simple/lxml/
Reading http://codespeak.net/lxml
Best match: lxml 2.3.3
Downloading http://lxml.de/files/lxml-2.3.3.tgz
Processing lxml-2.3.3.tgz
Running lxml-2.3.3/setup.py -q bdist_egg --dist-dir /var/folders/NA/NA4jZIQeGBihRLry0Fm6v++++TI/-Tmp-/easy_install-CAOPgi/lxml-2.3.3/egg-dist-tmp-SOj-c0
Building lxml version 2.3.3.
Building without Cython.
Using build configuration of libxslt 1.1.12
Building against libxml2/libxslt in the following directory: /usr/lib
src/lxml/lxml.etree.c:276:31: error: libxml/schematron.h: No such file or directory
src/lxml/lxml.etree.c:276:31: error: libxml/schematron.h: No such file or directory
src/lxml/lxml.etree.c:2007: error: syntax error before ‘xmlSchemaSAXPlugStruct’
src/lxml/lxml.etree.c:2009: error: syntax error before ‘}’ token
src/lxml/lxml.etree.c:2007: error: syntax error before ‘xmlSchemaSAXPlugStruct’
src/lxml/lxml.etree.c:2009: error: syntax error before ‘}’ token
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_14_ParserContext_1__dealloc__’:
src/lxml/lxml.etree.c:73868: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext__copy’:
src/lxml/lxml.etree.c:73962: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext_prepare’:
src/lxml/lxml.etree.c:74266: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext_cleanup’:
src/lxml/lxml.etree.c:74324: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree__handleParseResult’:
src/lxml/lxml.etree.c:75040: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:75481: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:75494: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_14_ParserContext_1__dealloc__’:
src/lxml/lxml.etree.c:73868: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext__copy’:
src/lxml/lxml.etree.c:73962: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext_prepare’:
src/lxml/lxml.etree.c:74266: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_14_ParserContext_cleanup’:
src/lxml/lxml.etree.c:74324: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree__handleParseResult’:
src/lxml/lxml.etree.c:75040: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:75481: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:75494: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_9iterparse__read_more_events’:
src/lxml/lxml.etree.c:99050: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_9iterparse__read_more_events’:
src/lxml/lxml.etree.c:99050: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_9XMLSchema__newSaxValidator’:
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133263: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133298: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_30_ParserSchemaValidationContext___cinit__’:
src/lxml/lxml.etree.c:133349: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133358: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133367: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_30_ParserSchemaValidationContext_1__dealloc__’:
src/lxml/lxml.etree.c:133395: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133404: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133414: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_copy’:
src/lxml/lxml.etree.c:133448: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_inject_default_attributes’:
src/lxml/lxml.etree.c:133508: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133531: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_connect’:
src/lxml/lxml.etree.c:133578: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133588: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133588: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133597: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133624: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133633: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133648: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133648: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_disconnect’:
src/lxml/lxml.etree.c:133681: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133691: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133700: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_isvalid’:
src/lxml/lxml.etree.c:133729: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133749: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_9XMLSchema__newSaxValidator’:
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133262: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133263: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133298: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_30_ParserSchemaValidationContext___cinit__’:
src/lxml/lxml.etree.c:133349: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133358: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133367: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_30_ParserSchemaValidationContext_1__dealloc__’:
src/lxml/lxml.etree.c:133395: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133404: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133414: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_copy’:
src/lxml/lxml.etree.c:133448: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133471: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_inject_default_attributes’:
src/lxml/lxml.etree.c:133508: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133531: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_connect’:
src/lxml/lxml.etree.c:133578: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133588: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133588: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133597: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133624: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133633: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133648: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133648: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_disconnect’:
src/lxml/lxml.etree.c:133681: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133691: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133700: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_30_ParserSchemaValidationContext_isvalid’:
src/lxml/lxml.etree.c:133729: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:133749: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_new_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149004: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149005: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_dealloc_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_traverse_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149030: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149031: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_clear_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149039: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149040: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: At top level:
src/lxml/lxml.etree.c:149150: error: invalid application of ‘sizeof’ to incomplete type ‘struct __pyx_obj_4lxml_5etree__ParserSchemaValidationContext’ 
src/lxml/lxml.etree.c: In function ‘__pyx_tp_new_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149004: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149005: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_dealloc_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149023: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_traverse_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149030: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149031: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: In function ‘__pyx_tp_clear_4lxml_5etree__ParserSchemaValidationContext’:
src/lxml/lxml.etree.c:149039: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c:149040: error: dereferencing pointer to incomplete type
src/lxml/lxml.etree.c: At top level:
src/lxml/lxml.etree.c:149150: error: invalid application of ‘sizeof’ to incomplete type ‘struct __pyx_obj_4lxml_5etree__ParserSchemaValidationContext’ 
lipo: can't open input file: /var/folders/NA/NA4jZIQeGBihRLry0Fm6v++++TI/-Tmp-//ccpgwsWT.out (No such file or directory)
error: Setup script exited with error: command 'gcc' failed with exit status 1

【问题讨论】：

只是一个猜测，但从错误来看，它似乎找不到 libxslt。您可能将它安装在非标准位置（它正在/usr/lib 中寻找它），在这种情况下，可能会有一个命令行选项告诉安装程序在哪里查找。否则，您可能必须在 /usr/lib 中安装 libxslt。

标签： python macos installation lxml easy-install

【解决方案1】：

我无法仅通过查看错误来告诉您根本原因，但您可以先尝试一些简单的方法：

如果您还没有以超级用户 (sudo easy_install lxml) 身份运行安装。
尝试使用 pip 进行安装。我很幸运使用 pip 在 OSX 10.6 和 10.7 上安装 lxml，值得。如果您还没有 pip，只需执行sudo easy_install pip。然后sudo pip install lxml。

如果这不起作用，请告诉我们。

编辑：我相信 easy_install 和 pip 都使用相同的包存储库，但值得一试。

【讨论】：

我仍然得到一个构建错误，也许这一行特别指出了问题的根源？
gcc -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd -fno-common -dynamic -DNDEBUG -g -Os -Wall -Wstrict-原型 -DMACOSX -I/usr/include/ffi -DENABLE_DTRACE -arch i386 -arch ppc -pipe -I/usr/include/libxml2 -I/System/Library/Frameworks/Python.framework/Versions/2.5/include/python2。 5 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.5-i386-2.5/src/lxml/lxml.etree.o -w -flat_namespace src/lxml/lxml.etree.c:276 :31: 错误：libxml/schematron.h：没有这样的文件或目录
嗯，你可能有一个旧的/不匹配的 libxml2 版本。如果你想避免手动修复，你可以试试 lxml 的 macports 包。 port search lxml 查看可用版本。