快被 gulp-image 这个包给整疯了，有用过的来看看？

[s609926202]

系统：centos7.2 报错信息如下：

[13:28:40] 'images' errored after 72 ms
[13:28:40] Error in plugin "gulp-image"
Message:
    Command failed: /home/wwwroot/trueniu-php/wp-content/themes/trueniu_base/node_modules/mozjpeg/vendor/cjpeg -optimize -progressive -outfile /tmp/ea377731-efbb-445e-8d82-b84b6b561e54 /tmp/ad053805-5064-43dc-8da2-93e69a3cd529
/home/wwwroot/trueniu-php/wp-content/themes/trueniu_base/node_modules/mozjpeg/vendor/cjpeg: error while loading shared libraries: libpng16.so.16: cannot open shared object file: No such file or directory


Details:
    code: 127
    killed: false
    stdout: 
    stderr: /home/wwwroot/trueniu-php/wp-content/themes/trueniu_base/node_modules/mozjpeg/vendor/cjpeg: error while loading shared libraries: libpng16.so.16: cannot open shared object file: No such file or directory

    failed: true
    signal: null
    cmd: /home/wwwroot/trueniu-php/wp-content/themes/trueniu_base/node_modules/mozjpeg/vendor/cjpeg -optimize -progressive -outfile /tmp/ea377731-efbb-445e-8d82-b84b6b561e54 /tmp/ad053805-5064-43dc-8da2-93e69a3cd529
    timedOut: false
    domainEmitter: [object Object]
    domain: [object Object]
    domainThrown: false

[yangg]

http://lmgtfy.com/?q=libpng16.so.16%3A+cannot+open+shared+object+file

https://stackoverflow.com/questions/25549536/error-while-loading-shared-libraries-libpng16

[zbinlin]

明显是依赖库未安装：

```sh
yum install -y libjpeg libpng
```

https://www.npmjs.com/package/gulp-image#user-content-external-dendencies

[s609926202]

@zbinlin 确实已经安装了、、

软件包 libjpeg-turbo-1.2.90-5.el7.x86_64 已安装并且是最新版本
软件包 2:libpng-1.5.13-7.el7_2.x86_64 已安装并且是最新版本

[s609926202]

@yangg 这些都搜过了，现在是即使安装了这个 libpng16.so ，还是提示这样，，哎，，

[zbinlin]

版本问题，我看了下 centos 默认的 libpng, 和 libpng-devel 是 1.5 的，所以只有 libpng15.so ，没有 libpng16.so