我似乎无法更新 libstdc++6。我怀疑是某个 PPA 安装了它，现在我无法摆脱它。
有什么帮助吗？
; sudo apt upgrade gcc g++ cpp build-essential
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run ‘apt-get -f install’ to correct these.
The following packages have unmet dependencies.
libstdc++6 : Depends: gcc-5-base (= 5.4.0-6ubuntu1~16.04.10) but 5.4.1-2ubuntu1~12.04 is installed
E: Unmet dependencies. Try using -f.
和
; sudo apt remove gcc-5-base
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies.
gcj-5-jre-lib : Depends: gcc-5-base (>= 5.2.1-23) but it is not going to be installed
libgcj16 : Depends: gcc-5-base (>= 5.2.1-23) but it is not going to be installed
libstdc++6 : Depends: gcc-5-base (= 5.4.0-6ubuntu1~16.04.10) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
和
; sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... failed.
The following packages have unmet dependencies.
libstdc++6 : Depends: gcc-5-base (= 5.4.0-6ubuntu1~16.04.10) but 5.4.1-2ubuntu1~12.04 is installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
E: Unable to correct dependencies
附言：这很奇怪：lsb_release -a显示我正在运行Ubuntu 16.04.5 LTS。但是，我刚刚升级到 18.04……我认为刚刚升级到 16……这有点道理。标签已编辑。
答案1
我似乎已经解决了：
- 下载 libstdc++ 的包。
- 通过 降级 gcc
apt-get install gcc-5-base=5.4.0-6ubuntu1~16.04.10。 - 手动安装：
dpkg -i libstdc++6_5.4.0-6ubuntu1\~16.04.10_amd64.deb。
至少错误已经消失。