How can i download and install llvm on Ubuntu 18.04?

I have llvm-6.0 and I don't know how to download and install llvm-7.0 on Ubuntu 18.04? Can I install it from terminal or I download from a site?

There are basically two ways to install LLVM on your Ubuntu 18.04 machine:

• Source
• Binary

Considering your question, it seems you would like to have a binary version of LLVM. Therefore you can install LLVM from your Ubuntu 18.04 terminal as following:

First of all, you should update packages as following:

• sudo apt-get update

However, for custom LLVM i.e. in your case LLVM 7:

• sudo apt-get install -y llvm-7
• sudo apt-get install -y llvm-7 llvm-7-dev llvm-7-tools clang-7

Do you want some LLVM-7 examples?

• sudo apt-get -y install llvm-7-examples

Do you want to remove LLVM-6?

• sudo apt-get purge llvm-6.0 clang-6.0
• sudo add-apt-repository --remove ppa:kxstudio-team/builds

For default LLVM installation you should run following (not for your case):

• sudo apt install llvm

• For detail packages please check LLVM Ubuntu nightly packages

However, currently the last version of LLVM is LLVM 13.0. 1. It is better to install the latest version.