如何在Debian喘息阿梅尔安装G ++ 4.9？ [英] How to install g++ 4.9 on Debian Wheezy armel?

问题描述

我的Debian 7阿梅尔嵌入式系统目前拥有G ++ 4.6，我想升级到G ++ 4.9使用新的C ++ 11的特性。我该怎么做呢？

我目前的sources.list的内容是：

    DEB http://security.debian.org/~~V喘息/主更新
    DEB-SRC http://security.debian.org/喘息/更新主
    DEB http://ftp.us.debian.org/debian~~V喘息主要非自由
    DEB-SRC http://ftp.us.debian.org/debian喘息主要非自由

一个简单的apt-get安装包不起作用：

    根@手臂：〜＃的apt-get安装G ++  -  4.9
    读取软件包列表...完成
    的依赖关系树
    读取状态信息...完成
    E：无法找到包的g ++  -  4.9
    E：无法找到任何正则表达式包G ++  -  4.9

解决方案

另一个解决办法可能是安装G ++从杰西4.9程序包，按<一个href=\"https://solarianprogrammer.com/2015/01/13/raspberry-pi-raspbian-install-gcc-compile-cpp-14-programs/\">this博客文章。简单地说，你必须告诉APT，而你正在安装新的G ++使用杰西回购。首先把当前喘息了最新的：

  sudo易于得到更新
sudo易于得到升级
 

然后做一个备份:-)和编辑的/etc/apt/sources.list ，这样你替换字符串喘息与杰西：

 须藤CP的/etc/apt/sources.list /etc/apt/sources.list.WHEEZY
sudo的VI的/etc/apt/sources.list
 

现在更新软件包列表，并安装4.9版本的GCC / G ++的：

  sudo易于得到更新
sudo易于得到安装gcc-4.9 G ++  -  4.9
 

在此恢复到原始的软件包列表：

 须藤CP /etc/apt/sources.list.WHEEZY的/etc/apt/sources.list
sudo易于得到更新
 

这离开原来的GCC，G ++到位。如果你想与4.9版编译，然后要么将 CC 和 CXX ENV相应瓦尔或调用编译器为 GCC-4.9 或 G ++ - 4.9 明确地

My Debian 7 armel embedded system currently has g++ 4.6, and I'd like to upgrade to g++ 4.9 to use new C++11 features. How do I do that?

My current sources.list contents is:

    deb http://security.debian.org/ wheezy/updates main
    deb-src http://security.debian.org/ wheezy/updates main
    deb http://ftp.us.debian.org/debian wheezy main non-free
    deb-src http://ftp.us.debian.org/debian wheezy main non-free

A simple apt-get install of the package does not work:

    root@arm:~#  apt-get install g++-4.9
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    E: Unable to locate package g++-4.9
    E: Couldn't find any package by regex 'g++-4.9'

解决方案

Another workaround could be to install the g++ 4.9 packages from "Jessie", according to this blog post. Briefly, you would have to tell APT to use the Jessie repos while you are installing the new G++. First bring the current Wheezy up-to-date:

sudo apt-get update
sudo apt-get upgrade

Then do a backup :-) and edit /etc/apt/sources.list so that you replace the string "wheezy" with "jessie":

sudo cp /etc/apt/sources.list /etc/apt/sources.list.WHEEZY
sudo vi /etc/apt/sources.list

Now update the package list and install the 4.9 version of GCC/G++:

sudo apt-get update
sudo apt-get install gcc-4.9 g++-4.9

After this revert to the "original" package list:

sudo cp /etc/apt/sources.list.WHEEZY /etc/apt/sources.list
sudo apt-get update

This leaves the original GCC,G++ in place. If you wish to compile with the 4.9 version, then either set the CC and CXX env vars accordingly or invoke the compilers as gcc-4.9 or g++-4.9 explicitly.

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