I recently migrated from Windows to Ubuntu (actually Codeanywhere running Ubuntu) and need to upgrade to gcc 7, as it comes with gcc 4.8.2, and I need C ++ 17. I executed the following commands on the terminal:
$ sudo apt-get install software-properties-common python-software-properties $ sudo add-apt-repository ppa:jonathonf/gcc-7.1 $ sudo apt-get update $ sudo apt-get install gcc-7 g++-7
But I received the following error:
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++-7 : Depends: libisl15 (>= 0.15) but it is not installable Depends: libmpfr4 (>= 3.1.3) but 3.1.2-1 is to be installed gcc-7 : Depends: cpp-7 (= 7.1 .8-10ubuntu1~14.04.york8) but it is not going to be installed Depends: binutils (>= 2.26.1) but 2.24-5ubuntu14.2 is to be installed Depends: libisl15 (>= 0.15) but it is not installable Depends: libmpfr4 (>= 3.1.3) but 3.1.2-1 is to be installed E: Unable to correct problems, you haye held broken packages.
$ cat /etc/lsb* DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 DISTRIB_CODENAME=trusty DISTRIB_DESCRIPTION="Ubuntu 14.04.5 LTS"
What I need to do?
Sorry for my English.
Missing package is
libisl15 (>= 0.15), and not
libisllS (>= 8.15). Sorry.