Ubuntu18.04安装g++时报错(g++ install

2020-10-28  本文已影响0人  e18ea5ca8301

参考链接:

[解决 The following packages have unmet dependencies: 问题] https://blog.csdn.net/jqw11/article/details/93063985

更新:

Ubuntu18.04 系统安装 g++ 依然出错,把 Ubuntu18.04 系统升级至 Ubuntu20.04 以后,问题都神奇地解决了。


ploso@ploso-ThinkPad-T420:~$ sudo apt-get -y install g++-8

Reading package lists... Done

Building dependency tree     

Reading state information... Done

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable

distribution that some required packages have not yet been created

or been moved out of Incoming.

The following information may help to resolve the situation:

The following packages have unmet dependencies:

g++-8 : Depends: libstdc++-8-dev (= 8.4.0-1ubuntu1~18.04) but it is not going to be installed

E: Unable to correct problems, you have held broken packages.

$ sudo apt-get install libstdc++-8-dev = 8.4.0-1ubuntu1~18.04

Readingpackagelists... Done

Building dependency tree     

Reading state information... Done

Thefollowingpackages will be DOWNGRADED:

  libfreetype6

0upgraded,0newly installed,1downgraded,0toremoveand2notupgraded.

Needtoget316kBofarchives.

Afterthis operation,0Bofadditional diskspacewill be used.

Doyou wanttocontinue? [Y/n] y

Get:1http://archive.ubuntu.com/ubuntu xenial/mainamd64 libfreetype6 amd642.6.1-0.1ubuntu2 [316kB]

Fetched316kBin2s (119kB/s)

dpkg:warning: downgrading libfreetype6:amd64from2.6.1-0.1ubuntu2.3to2.6.1-0.1ubuntu2

(Readingdatabase...311069filesanddirectories currently installed.)

Preparingtounpack .../libfreetype6_2.6.1-0.1ubuntu2_amd64.deb ...

Unpacking libfreetype6:amd64 (2.6.1-0.1ubuntu2)over(2.6.1-0.1ubuntu2.3) ...

Processingtriggersforlibc-bin(2.23-0ubuntu11) ...

Setting up libfreetype6:amd64 (2.6.1-0.1ubuntu2) ...

Processingtriggersforlibc-bin(2.23-0ubuntu11) ...

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