I am trying to install cling in Ubuntu 12.04. I thought that the proper way was to download the binaries, as they are available here, but the extracted folder looks like this:

~/Desktop/cling » ls
bin docs include lib share

This requires, I think, to merge the directories content with some directories of my filesystem. I am not familiar with this method but it seems to me a bit dirty; how can I install it, upgrade it, delete it?

I was thinking about packaging it with a deb, but I never did one so I do not know if it is the correct way..

Is there a better way to install cling?

1

3 Answers

Cling now provides binary snapshots for Ubuntu (as well as Fedora and OSX) which you can find here

For example if you are on ubuntu 16 (or newer?):

sudo apt install -y wget unar
wget
unar cling_2020-11-05_ROOT-ubuntu2004.tar.bz2
./cling_2020-11-05_ROOT-ubuntu2004/bin/cling

7

Ok, this is not a weekend project and apparently it needs too many stuff to be installed before operative. So, I haven't tested this myself, but is what the instructions says (+ some bits of Ubuntu):

Get the tools first, you need some other may be installed on your system, so to prevent this just:

sudo apt-get install build-essential zlib-bin zlib1g-dev subversion texinfo git

Now, create a directory empty to do your experiment:

mkdir ~/cling-clang
cd ~/cling-clang

This step will take a while if you have slow connection (please use one line at time):

svn co llvm
cd llvm/tools
svn co clang
git clone
cd ..
cat tools/cling/patches/*.diff | patch -p0
cd ../llvm/projects
svn co compiler-rt
cd ../..
mkdir build
cd build

Now start the fun. If nothing of the above failed you can continue:

../llvm/configure --enable-targets=host
make

This will build LLVM, Clang and Cling. There should be a package maintainer that do this stuff for Debian/Ubuntu, I tip my hat off. This will have the Cling built, but not installed. You may want to use checkinstall instead of sudo make install.

4

cling is now packaged for GNU Guix and Guix can be installed on top of any GNU/Linux distribution such as Ubuntu.

After you've gone through the binary installation of Guix as documented here: , you can install cling via:

$ guix install cling

And verify that it works with:

$ cling '#include <stdio.h>' 'printf("Hello World!\n");'
Hello World!

Hopefully that should save you some time compared to building Cling/LLVM from source.

0

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