CentOS下g++: command not found问题的解决

不念不忘少年蓝@ 2022-07-12 15:12 259阅读 0赞

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 found

g++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。