这个是linux系统下libpng的安装包,This is a linux system installation package libpng

libpng官方源码 版本为version 1.2.37,libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 14 years

用于开发和维护用于读取、创建和操作PNG（便携式网络图形）光栅图像文件的应用程序的参考库(This is to develop and maintain the reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files.)