使用rpm方式安装gcc时,有时会报缺少依赖项: libmpfr.so.1 is needed by cpp-4.4.4-13.el6.i686 libppl.so.7 is needed by cloog-ppl-0.15.7-1.2.el6.i686 libppl_c.so.2 is needed by cloog-ppl-0.15.7-1.2.el6.i686 这是因为缺少 mpfr-2.4.1-6.el6.***.rpm ppl-0.10.2-11.el6.***.rpm 这两个
https://www.lfd.uci.edu/~gohlke/pythonlibs/#mysql-python 从这个网站直接下载需要的包进行安装 来源 https://www.cnblogs.com/xinzhiyan/p/8352266.html 错误具体内容如下: _mysql.c(29) : fatal error C1083: Cannot open include file: 'mysql.h': No such file or directory error: comman
装完rails后创建应用程序: rails new demo 进入创建的demo文件夹 cd demo 检查安装环境 rake about 这时出现错误 Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. 解决办法: 引用两个gem:execjs和therubyracer,在应用跟目录下的GemFile中添加: gem ‘e