linux 编译 expat,关于expat库的编译

1、expat库简介

refer to wiki:

To use the Expat library, programs first register handler functions with Expat. When Expat parses an XML document, it calls the registered handlers as it finds relevant tokens in the input stream. These tokens and their associated handler calls are called events. Typically, programs register handler functions for XML element start or stop events and character events. Expat provides for more sophisticated event handling such as XML Namespace declarations, processing instructions and DTD events.

Expat is parsing events resemble the events defined in the Simple API for XML (SAX), but Expat is not a SAX-compliant parser. Projects incorporating the Expat library often build SAX and possibly DOM parsers on top of Expat. While Expat is mainly a stream-based (push) parser, it supports stopping and restarting parsing at arbitrary times, thus making the implementation of a pull parser relatively easy as well.