fatal error: 'libxml/xmlversion.h' file not found

問題：

MACOS安裝scrapy時，安裝lxml出現錯誤

In file included from src/lxml/lxml.etree.c:232:

/tmp/easy_install-O2UfP7/lxml-3.4.0/src/lxml/includes/etree_defs.h:14:10: fatal error: 'libxml/xmlversion.h' file not found

#include "libxml/xmlversion.h"

         ^

1 error generated.

error: Setup script exited with error: command 'cc' failed with exit status 1

 

解決方法：

xcode-select --install