[SOLVED] Mint 19 Cinnamon unable to install gcc-8

[xenopeek]

Does it show in this list:
ls -l /usr/bin/gcc*

What about in this output:
dpkg -S gcc-8

Or:
dpkg -L gcc-8 | grep /usr/bin

[deepakdeshp]

Does it show in this list:
ls -l /usr/bin/gcc*

What about in this output:
dpkg -S gcc-8

Or:
dpkg -L gcc-8 | grep /usr/bin

Code: Select all

ls -l /usr/bin/gcc* |grep gcc-8
/usr/bin/gcc-8:
uma@mint-18-uma ~ $ /usr/bin/gcc-8 --version
bash: /usr/bin/gcc-8: Is a directory
uma@mint-18-uma ~ $ cd /usr/bin/gcc-8
uma@mint-18-uma /usr/bin/gcc-8 $ ls
uma@mint-18-uma /usr/bin/gcc-8 $ dpkg -L gcc-8 | grep /usr/bin
/usr/bin
/usr/bin/x86_64-linux-gnu-gcc-8
/usr/bin/x86_64-linux-gnu-gcc-ar-8
/usr/bin/x86_64-linux-gnu-gcc-nm-8
/usr/bin/x86_64-linux-gnu-gcc-ranlib-8
/usr/bin/x86_64-linux-gnu-gcov-8
/usr/bin/x86_64-linux-gnu-gcov-dump-8
/usr/bin/x86_64-linux-gnu-gcov-tool-8
/usr/bin/gcc-8
/usr/bin/gcc-ar-8
/usr/bin/gcc-nm-8
/usr/bin/gcc-ranlib-8
/usr/bin/gcov-8
/usr/bin/gcov-dump-8
/usr/bin/gcov-tool-8
uma@mint-18-uma /usr/bin/gcc-8 $ dpkg -S gcc-8
gcc-8-base:amd64: /usr/share/doc/gcc-8-base/copyright
gcc-8-base:amd64: /usr/share/doc/gcc-8-base/TODO.Debian
gcc-8: /usr/share/lintian/overrides/gcc-8
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx/v6/__init__.py
gcc-8: /usr/share/doc/gcc-8-base/mpx/changelog.gz
gcc-8: /usr/share/doc/gcc-8-base/NEWS.html
gcc-8: /usr/share/doc/gcc-8-base/NEWS.gz
gcc-8: /usr/share/doc/gcc-8-base/quadmath/changelog.gz
gcc-8: /usr/share/doc/gcc-8
gcc-8-base:amd64: /usr/share/doc/gcc-8-base/changelog.Debian.gz
gcc-8: /usr/share/doc/gcc-8-base/changelog.gz
gcc-8: /usr/share/doc/gcc-8-base/itm
gcc-8: /usr/share/doc/gcc-8-base/mpx
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx
gcc-8: /usr/share/doc/gcc-8-base/gomp/changelog.gz
libstdc++6:amd64: /usr/share/gcc-8/python
gcc-8: /usr/share/doc/gcc-8-base/README.Bugs
gcc-8: /usr/bin/gcc-8
gcc-8: /usr/share/man/man1/x86_64-linux-gnu-gcc-8.1.gz
libgcc-8-dev:amd64: /usr/share/doc/libgcc-8-dev
libstdc++6:amd64: /usr/share/gcc-8
gcc-8: /usr/share/doc/gcc-8-base/gcc
gcc-8: /usr/share/doc/gcc-8-base/gcc/changelog.gz
gcc-8, gcc-8-base:amd64: /usr/share/doc/gcc-8-base
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx/v6/printers.py
gcc-8: /usr/share/doc/gcc-8-base/README.ssp
gcc-8: /usr/bin/x86_64-linux-gnu-gcc-8
gcc-8: /usr/share/man/man1/gcc-8.1.gz
gcc-8: /usr/share/doc/gcc-8-base/itm/changelog.gz
gcc-8-base:amd64: /usr/share/doc/gcc-8-base/README.Debian.amd64.gz
gcc-8: /usr/share/doc/gcc-8-base/gomp
gcc-8: /usr/share/doc/gcc-8-base/quadmath
gcc-8: /usr/share/doc/gcc-8-base/sanitizer/changelog.gz
gcc-8: /usr/share/doc/gcc-8-base/sanitizer
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx/v6
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx/__init__.py
libstdc++6:amd64: /usr/share/gcc-8/python/libstdcxx/v6/xmethods.py

/usr/bin/gcc-8 is an empty directory.

Code: Select all

find /usr -name gcc-8
/usr/share/gcc-8
/usr/share/doc/gcc-8
/usr/share/lintian/overrides/gcc-8
/usr/bin/gcc-8

[xenopeek]

Installed from the package gcc-8 in the Ubuntu 18.04 repository, /usr/bin/gcc-8 is a symoblic link to /usr/bin/x86_64-linux-gnu-gcc-8.

I can only guess it's still installed from somewhere else. What does this show:
apt policy gcc-8

[deepakdeshp]

Code: Select all

apt policy gcc-8
gcc-8:
  Installed: 8.1.0-1ubuntu1
  Candidate: 8.1.0-1ubuntu1
  Version table:
 *** 8.1.0-1ubuntu1 500
        500 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu bionic/main amd64 Packages
        100 /var/lib/dpkg/status
     8-20180414-1ubuntu2 500
        500 http://mirror.cse.iitk.ac.in/ubuntu bionic/universe amd64 Packages

How do I call gcc-8?

[deepakdeshp]

Installed from the package gcc-8 in the Ubuntu 18.04 repository, /usr/bin/gcc-8 is a symoblic link to /usr/bin/x86_64-linux-gnu-gcc-8.

I can only guess it's still installed from somewhere else. What does this show:
apt policy gcc-8

/usr/bin/gcc-8 is a directory and not a file

[xenopeek]

For a first, I'd suggest to disable the update-toolchain-r/test PPA for now. You can do that in Software Sources.

Start by doing this, which I asked you to do earlier. That PPA is causing this issue.

Then redo the following to, again, reinstall gcc packages and hopefully this time manage to get the versions from the Ubuntu repositories instead of from dodgy PPAs.

Try this to force install the gcc-7 related packages with the version from the repository:

Code: Select all

apt install cpp-7=7.3.0-16ubuntu3 gcc-7=7.3.0-16ubuntu3 gcc-7-base=7.3.0-16ubuntu3 gcc-7-base:i386=7.3.0-16ubuntu3 libasan4=7.3.0-16ubuntu3 libcilkrts5=7.3.0-16ubuntu3 libgcc-7-dev=7.3.0-16ubuntu3 libubsan0=7.3.0-16ubuntu3

If it throws some error or says doing this would break dependencies please share here.

If it works try it also for the gcc-8 related packages:

Code: Select all

apt install gcc-8-base=8-20180414-1ubuntu2 libasan5=8-20180414-1ubuntu2 libatomic1=8-20180414-1ubuntu2 libcc1-0=8-20180414-1ubuntu2 libgcc-8-dev=8-20180414-1ubuntu2 libgcc1=1:8-20180414-1ubuntu2 libgomp1=8-20180414-1ubuntu2 libitm1=8-20180414-1ubuntu2 liblsan0=8-20180414-1ubuntu2 libmpx2=8-20180414-1ubuntu2 libquadmath0=8-20180414-1ubuntu2 libstdc++6=8-20180414-1ubuntu2 libtsan0=8-20180414-1ubuntu2 libubsan1=8-20180414-1ubuntu2

If it throws some error or says doing this would break dependencies please share here.

[deepakdeshp]

For a first, I'd suggest to disable the update-toolchain-r/test PPA for now. You can do that in Software Sources.

Start by doing this, which I asked you to do earlier. That PPA is causing this issue.

Then redo the following to, again, reinstall gcc packages and hopefully this time manage to get the versions from the Ubuntu repositories instead of from dodgy PPAs.

Try this to force install the gcc-7 related packages with the version from the repository:

Code: Select all

apt install cpp-7=7.3.0-16ubuntu3 gcc-7=7.3.0-16ubuntu3 gcc-7-base=7.3.0-16ubuntu3 gcc-7-base:i386=7.3.0-16ubuntu3 libasan4=7.3.0-16ubuntu3 libcilkrts5=7.3.0-16ubuntu3 libgcc-7-dev=7.3.0-16ubuntu3 libubsan0=7.3.0-16ubuntu3

If it throws some error or says doing this would break dependencies please share here.

If it works try it also for the gcc-8 related packages:

Code: Select all

apt install gcc-8-base=8-20180414-1ubuntu2 libasan5=8-20180414-1ubuntu2 libatomic1=8-20180414-1ubuntu2 libcc1-0=8-20180414-1ubuntu2 libgcc-8-dev=8-20180414-1ubuntu2 libgcc1=1:8-20180414-1ubuntu2 libgomp1=8-20180414-1ubuntu2 libitm1=8-20180414-1ubuntu2 liblsan0=8-20180414-1ubuntu2 libmpx2=8-20180414-1ubuntu2 libquadmath0=8-20180414-1ubuntu2 libstdc++6=8-20180414-1ubuntu2 libtsan0=8-20180414-1ubuntu2 libubsan1=8-20180414-1ubuntu2

If it throws some error or says doing this would break dependencies please share here.

I am sorry that I missed the part to disable the toolchains ppa. I disabled it as per your advise and ran the commands. gcc-8 is finally installed!
Thanks a lot for being patient and seeing the problem through!!

[xenopeek]

You're welcome. Finally you can get to GCC'ing

[deepakdeshp]

You're welcome. Finally you can get to GCC'ing

Its all because of you who did the hand holding very patiently excusing my mistake to disable the PPA. May be if the ppa wasnt enabled, the issue would not have risen. But again I enabled it in desperation when I wasnt able to install gcc-8, thinking it would help me.