Using the XPath Wrappers

1. Click current project and find Header Search Paths files double-click on the entry filed.

2. Click the + button and add ${SDKROOT}/usr/include/libxml2 to the paths

3. Then in the Linking subsection of this window, double-click on the Other Linker Flags field and click +. Add –lxml2 to the flags and then click OK.

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原文地址：https://www.cnblogs.com/shenfei2031/p/2105751.html