安装PHP的时候提示:No package libjpeg found出现原因:缺少libjpeg 的依赖包 
解决方案: 
1、Redhat|CentOS 
7版本: 
下载安装rpm包: 
- wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libjpeg-turbo-1.2.90-8.el7.x86_64.rpm
 
 - wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libjpeg-turbo-devel-1.2.90-8.el7.x86_64.rpm
 
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安装: 
 
8系列: 
下载安装rpm包 
- wget  https://vault.centos.org/centos/8/AppStream/x86_64/os/Packages/libjpeg-turbo-1.5.3-12.el8.x86_64.rpm
 
 - wget  https://vault.centos.org/centos/8/AppStream/x86_64/os/Packages/libjpeg-turbo-devel-1.5.3-12.el8.x86_64.rpm
 
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安装: 
 
 
2、Debian|Ubuntu 
更新安装源 
 
安装依赖 
- apt-get install libjpeg-dev
 
 
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