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Chapter 1. LLVM Toolset

LLVM Toolset is a Red Hat offering for developers on Red Hat Enterprise Linux (RHEL). It provides the LLVM compiler infrastructure framework, the Clang compiler for the C and C++ languages, the LLDB debugger, and related tools for code analysis.

LLVM Toolset is available as a module for RHEL 8 and as packages for RHEL 9 and 10.

1.1. LLVM Toolset components
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NameVersionDescription

clang

19.1.7

An LLVM compiler front end for C and C++.

lldb

19.1.7

A C and C++ debugger using portions of LLVM.

compiler-rt

19.1.7

Runtime libraries for LLVM and Clang.

llvm

19.1.7

A collection of modular and reusable compiler and toolchain technologies.

libomp

19.1.7

A library for using Open MP API specification for parallel programming.

lld

19.1.7

An LLVM linker.

python-lit

19.1.7

A software testing tool for LLVM- and Clang-based test suites.

Note

The CMake build manager is not part of LLVM Toolset. CMake is available in the system repository. For more information on how to install CMake, see Installing the CMake build manager.

1.2. LLVM Toolset compatibility
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LLVM Toolset is available for Red Hat Enterprise Linux on the following architectures:

  • AMD and Intel 64-bit
  • 64-bit ARM
  • IBM Power Systems, Little Endian
  • 64-bit IBM Z

1.3. Installing LLVM Toolset
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Complete the following steps to install LLVM Toolset, including all dependent packages.

Prerequisites

  • All available Red Hat Enterprise Linux updates are installed.

Procedure

  1. Install LLVM Toolset:

    • On RHEL 8, enter: 

      # yum module install llvm-toolset
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    • On RHEL 9 and 10, enter: 

      # dnf install llvm-toolset
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  2. To also install the LLDB debugger and the python3-lit package, enter: 

    # dnf install lldb python3-lit
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1.4. LLVM Toolset documentation
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For the official LLVM Toolset documentation, see the upstream documentation.

Note

The llvm-doc package provides only a reference to the upstream documentation.

1.5. Installing the CMake build manager
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The CMake build manager is a tool that manages the build process of your source code independently from your compiler. CMake can generate a native build environment to compile source code, create libraries, generate wrappers, and build executable files.

Complete the following steps to install the CMake build manager.

Prerequisites

Procedure

  • Install CMake: 

    # yum install cmake
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1.6. Installing the CMake documentation
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You can install documentation for the CMake build manager on your local system.

Prerequisites

Procedure

  • Install the cmake-doc package: 

    # dnf install cmake-doc
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Verification

  • Open /usr/share/doc/cmake/html/index.html in a browser that is installed on the same host.
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