如何在centos 6上恢复系统gcc编译器

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问题描述

我正在集群上运行centos 6.我安装了最新的gcc-8.2.0.并建立了一个链接"ln -sf/usr/bin/gcc-8.2 gcc".我对g ++和gfortran做了同样的事情.我想重新安装gcc-8.2.0并继续

I am running centos 6 on a cluster. I installed the latest gcc-8.2.0. and made a link "ln -sf /usr/bin/gcc-8.2 gcc".I did the same for g++ and gfortran.I wanted to reinstall gcc-8.2.0 and went ahead to

make clean

在gcc-8.2目录中的

.当我尝试

in the gcc-8.2 directory.When I try

./configure

我知道C编译器无法创建可执行文件我建立的链接已断开.找不到系统gcc-4.4.7

I get that C compiler cannot create executablesThe links I made are broken.The system gcc-4.4.7 cannot be found

which gcc

不提供gcc

sudo yum install gcc gcc-c++

已安装gcc.我试图安装一个rpm，但由于依赖关系而失败.我在/opt/pgi中安装了pg编译器当我使用

gives gcc is already installed.I tried to install an rpm, which fails because of dependencies.I have pg compilers installed in /opt/pgiWhen I configure with

CC=/path to/pgi/bin/pgcc FC=/path to/pgi/bin/pgfortran ./configure

我仍然得到C编译器无法创建可执行文件的信息我尝试了以下c ++程序

I still get C compiler cannot create executablesI tried the following c++ programm

#include <iostream>
using namespace std;
int main() {
cout << "Hello world!" << endl;
return 0;
}

使用命令

/opt/pgi/linux_86_64/12.08/bin/pgcpp hello.cpp -o hello

它给出了未找到float.h的编译错误.在另一台运行gcc的Linux PC上，该程序可以使用以下命令

It gives compilation error that float.h not found. On another linux PC with working gcc, the program works with the command

g++ hello.cpp -o hello

如果能找到systemgcc或使用pg编译器编译gcc的任何帮助，我将不胜感激

I will appreciate any assistance to either find the systemgcc or use pg compilers to compile gcc if possible

我承认这是一团糟，需要重新安装和重新配置操作系统.但是后来我做到了

I admit it is a big mess which will require OS reinstallation and reconfiguration. But then I did

sudo yum install compat-gcc-34

现在我有了gcc34并完成了gcc-8.2的配置，而没有"c编译器无法创建可执行文件". (请注意，先前文章中提到的./configure实际上是

Now I have gcc34 and configure of gcc-8.2 goes through without "c compiler cannot create executables". (Note that the ./configure referred to in earlier post was actually

../gcc_8_2_release/configure

在"gcc_8_2_release_build"内部，因此未在其源目录中构建gcc.我现在遇到的问题是make，它需要g ++，给出错误

inside "gcc_8_2_release_build, so gcc was not being built in its source directory.The problem I have now is with make, which needs g++, giving error

uint_t(64) or int_t(64) not found.

感谢所有耐心等待这篇文章的人.任何帮助将不胜感激.

Thanks all who have gone through this post, for your patience.Any assistance will be appreciated.

这是我摆脱困境的方式.使用以下两个命令

Here is how I got out of this mess.With the following two commands

sudo yum install compat-gcc-34-c++
sudo yum install compat-gcc-34-g77

我能够安装旧版本的gcc，c ++和g77.然后，我能够构建gcc-8.2.现在，我有了一个带有最新gcc的功能系统，是的，它可能需要重新安装/重新配置，但功能齐全.我学到了很多东西，非常感谢@Basile的评论和指南.但是，在某一时刻，他颇为消极和沮丧.但是由于我的信念和毅力，更重要的是浏览了其他人共享的知识，我才得以恢复原来的信念，认为这是一个失败的事业.谢谢大家.

I was able to install the older version of gcc, c++ and g77. Then I was able to build gcc-8.2.Now I have a functional system with the latest gcc, yes it may need re-installation/re-configuring but it is fully functional.I have learnt a lot and very much appreciate the comments and guidelines of @Basile. However, at one point he was rather negative and discouraging.But thanks to my belief and perseverance, and more importantly browsing the knowledge shared by others, I have been able to recover what I was beginning to be convinced was a lost cause.Thanks all.

mess

如何在centos 6上恢复系统gcc编译器

问题描述

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