1. 问题的提出
在安装extundelete的过程中，发现在configure过程中，出错了，具体的错误信息如下：
configure:2865: g++ --version >&5 ./configure: line 2867: g++: command not found configure:2876: $? = 127 configure:2865: g++ -v >&5 ./configure: line 2867: g++: command not found configure:2876: $? = 127 configure:2865: g++ -V >&5 ./configure: line 2867: g++: command not found configure:2876: $? = 127 configure:2865: g++ -qversion >&5 ./configure: line 2867: g++: command not found configure:2876: $? = 127 configure:2896: checking whether the C++ compiler works configure:2918: g++ conftest.cpp >&5 ./configure: line 2920: g++: command not found configure:2922: $? = 127 configure:2960: result: no configure: Failed program was: | /* confdefs.h */ | #define PACKAGE_NAME "extundelete" | #define PACKAGE_TARNAME "extundelete" | #define PACKAGE_VERSION "0.2.4" | #define PACKAGE_STRING "extundelete 0.2.4" | #define PACKAGE_BUGREPORT "extundelete.sourceforge.net" | #define PACKAGE_URL "" | #define PACKAGE "extundelete" | #define VERSION "0.2.4" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; | } configure:2965: error: in `/root/extundelete-0.2.4': configure:2967: error: C++ compiler cannot create executables See `config.log' for more details
经过分析，发现其中的关键错误信息是：
g++: command not foundg++马上就脑补为gc++的编译器是不是没有安装呀？ 估计是的，按图索骥，安装看看。
2. 安装以及解决
由于本人使用的OS环境为centos， 其默认的包管理工具为yum,故按照依赖包：
yum -y update gcc yum -y install gcc+ gcc-c++执行上述命令之后，可以返现gcc相关命令都按照成功了，故问题解决。
3. 总结分析
默认情况下，centos并未按照gcc相关的编译命令，如果在安装软件之时，有时候需要从源代码编译开始，进行安装；此时就需要gcc的命令支持。
