CENTOS6.4安裝lxml失敗

環境以下：

• Centos6.4
• Python 2.7.6

pip install lxml
執行上面的命令，有相似下面的提示：

src/lxml/lxml.etree.c:188133: error: ‘xsltDocDefaultLoader’ undeclared (first use in this function)
src/lxml/lxml.etree.c:188142: warning: implicit declaration of function ‘xsltSetLoaderFunc’
src/lxml/lxml.etree.c:188142: error: ‘xsltDocLoaderFunc’ undeclared (first use in this function)
src/lxml/lxml.etree.c:188142: error: expected ‘)’ before ‘__pyx_f_4lxml_5etree__xslt_doc_loader’
src/lxml/lxml.etree.c:188393: warning: implicit declaration of function ‘xsltRegisterAllExtras’
src/lxml/lxml.etree.c:188402: warning: implicit declaration of function ‘exsltRegisterAll’
error: Setup script exited with error: command 'gcc' failed with exit status 1

像這種狀況，通常是對應的devel包沒有安裝，可是即便我安裝了libxml2 和libxml2-devel，仍是一樣的提示
已經確認過gcc, gcc-c++等基礎包安裝的了

[root@localhost]$ rpm -qa |grep gcc
gcc-4.4.7-4.el6.x86_64
libgcc-4.4.7-4.el6.x86_64
gcc-c++-4.4.7-4.el6.x86_64

查看pypi上lxml的文檔 lxml 3.4.1,能夠在第一段就看到下面的一句話：

Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

這裏指出了lxml 會使用到 libxml2/libxsl

yum search libxml 
yum search libxsl
會發現有libxslt-devel和libxml2-devel

執行shell命令：

yum -y install libxslt-devel

上面的命令執行以後，會自動安裝和更新以下的軟件包:

1. libxml2
   
2. libxml2-devel
3. libgpg-error-devel
4. libgcrypt-devel
   
5. libxslt
   
6. libxslt-devel

安裝上面了6個軟件包以後，pip install lxml就能成功安裝lxml了