How To Install ccls on Ubuntu 20.04

In this tutorial we learn how to install ccls on Ubuntu 20.04. ccls is C/C++/ObjC language server C/C++/ObjC language server

Introduction

In this tutorial we learn how to install ccls on Ubuntu 20.04.

What is ccls

ccls is:

This originates from cquery, and is a server implementing Language Server Protocol for C/C++/Objective-C. It supports:

  • code completion (with both signature help and snippets)
  • definition/references, and other cross references
  • cross reference extensions: $ccls/call $ccls/inheritance $ccls/member $ccls/vars …
  • formatting
  • hierarchies: call (caller/callee) hierarchy, inheritance (base/derived) hierarchy, member hierarchy
  • symbol rename
  • document symbols and approximate search of workspace symbol
  • hover information
  • diagnostics and code actions (clang FixIts)
  • semantic highlighting and preprocessor skipped regions
  • semantic navigation: $ccls/navigate

Package: ccls Architecture: amd64 Version: 0.20190823.5-1 Priority: optional Section: universe/devel Origin: Ubuntu Maintainer: Ubuntu Developers [email protected] Original-Maintainer: Shengjing Zhu [email protected] Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 23245 Depends: libc6 (>= 2.14), libgcc1 (>= 1:3.0), libllvm9 (>= 1:9~svn298832-1~), libstdc++6 (>= 9) Recommends: libclang-common-9-dev Suggests: elpa-lsp-mode Filename: pool/universe/c/ccls/ccls_0.20190823.5-1_amd64.deb Size: 5437120 MD5sum: 543e18ce6ba71bb53d3852ad2f781089 SHA1: 7c2b22d44e1f101d29ce7f10e088a615beb46c28 SHA256: d979b172c1880d883bf9818ea37c55cbfdbc9772d139773ec259adfcaaa47c94 Homepage: https://github.com/MaskRay/ccls Description-en: C/C++/ObjC language server This originates from cquery, and is a server implementing Language Server Protocol for C/C++/Objective-C. It supports:

  • code completion (with both signature help and snippets)
  • definition/references, and other cross references
  • cross reference extensions: $ccls/call $ccls/inheritance $ccls/member $ccls/vars …
  • formatting
  • hierarchies: call (caller/callee) hierarchy, inheritance (base/derived) hierarchy, member hierarchy
  • symbol rename
  • document symbols and approximate search of workspace symbol
  • hover information
  • diagnostics and code actions (clang FixIts)
  • semantic highlighting and preprocessor skipped regions
  • semantic navigation: $ccls/navigate

There are three methods to install ccls on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install ccls Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install ccls using apt-get by running the following command:

sudo apt-get -y install ccls

Install ccls Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install ccls using apt by running the following command:

sudo apt -y install ccls

Install ccls Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install ccls using aptitude by running the following command:

sudo aptitude -y install ccls

How To Uninstall ccls on Ubuntu 20.04

To uninstall only the ccls package we can use the following command:

sudo apt-get remove ccls

Uninstall ccls And Its Dependencies

To uninstall ccls and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove ccls

Remove ccls Configurations and Data

To remove ccls configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge ccls

Remove ccls configuration, data, and all of its dependencies

We can use the following command to remove ccls configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge ccls

References

Summary

In this tutorial we learn how to install ccls package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.