gm: error while loading shared libraries: libpng15.so.15: cannot open shared object file: No such file or directory

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org.im4java.core.CommandException: org.im4java.core.CommandException: /usr/local/bin/gm: error while loading shared libraries: libpng15.so.15: cannot open shared object file: No such file or directory

原因：GraphicsMagick-LATEST17.tar.gz 安装

gm: error while loading shared libraries: libpng15.so.15: cannot open shared object file: No such file or directory

错误，无法访问libpng15.so.15

问题原因，不能访问到 libpng12.so.15对象文件

一般情况libpng12.so.15是gm支持png格式图片的库文件，一般放在/usr/local/lib下，查看路径下确实存在此库文件，把路径/usr/local/lib添加到/etc/ld.so.conf中,

更新ldconfig -v 更新动态链接库

问题解决

gm: error while loading shared libraries: libpng15.so.15: cannot open shared object file: No such file or directory

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原文地址：http://www.cnblogs.com/sagech/p/4901752.html