Version 12.0.1-1 is the first release of the xPack LLVM clang package.

The xPack LLVM clang is a standalone cross-platform binary distribution of LLVM clang.

There are separate binaries for Windows (x64 and x86), macOS (x64) and GNU/Linux (x64 and x86, arm64 and arm).

Download

The binary files are available from GitHub Releases.

Prerequisites

  • x86/x64 GNU/Linux: any system with GLIBC 2.15 or higher (like Ubuntu 12 or later, Debian 8 or later, RedHat/CentOS 7 later, Fedora 20 or later, etc)
  • arm64/arm GNU/Linux: any system with GLIBC 2.23 or higher (like Ubuntu 16 or later, Debian 9 or later, RedHat/CentOS 8 or later, Fedora 24 or later, etc)
  • x86/x64 Windows: Windows 7 with the Universal C Runtime (UCRT), Windows 8, Windows 10
  • x64 macOS: 10.13 or later

Install

The full details of installing the xPack LLVM clang on various platforms are presented in the separate Install page.

Easy install

The easiest way to install LLVM clang is with xpm by using the binary xPack, available as @xpack-dev-tools/clang from the npmjs.com registry.

With the xpm tool available, installing the latest version of the package and adding it as a dependency for a project is quite easy:

cd my-project
xpm init # Only at first use.

xpm install @xpack-dev-tools/clang@latest

ls -l xpacks/.bin

To install this specific version, use:

xpm install @xpack-dev-tools/clang@12.0.1-1.2

It is also possible to install LLVM clang globally, in the user home folder, but this requires xPack aware tools to automatically identify them and manage paths.

xpm install --global @xpack-dev-tools/clang@latest --verbose

Uninstall

To remove the links from the current project:

cd my-project

xpm uninstall @xpack-dev-tools/clang

To completely remove the package from the central xPacks store:

xpm uninstall --global @xpack-dev-tools/clang

Compliance

The xPack LLVM clang generally follows the official LLVM clang releases.

The current version is based on:

  • LLVM clang version 12.0.1, from July 8th, 2021.

Changes

Compared to the upstream, there are no functional changes.

Bug fixes

  • none

Enhancements

  • none

Known problems

  • on macOS, the /Library/Developer/CommandLineTools/usr/include/c++/v1 was added to the include path; unfortunately this may crash some builds; removed in 15.0.7-3
  • when clang is invoked via a link from a different folder, the InstalledDir does not reflect the correct install folder, and the new clang system headers are either not found or the host system headers are used; fixed in 15.0.7-4

Shared libraries

On all platforms the packages are standalone, and expect only the standard runtime to be present on the host.

All dependencies that are build as shared libraries are copied locally in the libexec folder (or in the same folder as the executable for Windows).

DT_RPATH and LD_LIBRARY_PATH

On GNU/Linux the binaries are adjusted to use a relative path:

$ readelf -d library.so | grep runpath
 0x000000000000001d (RPATH)            Library rpath: [$ORIGIN]

In the GNU ld.so search strategy, the DT_RPATH has the highest priority, higher than LD_LIBRARY_PATH, so if this later one is set in the environment, it should not interfere with the xPack binaries.

Please note that previous versions, up to mid-2020, used DT_RUNPATH, which has a priority lower than LD_LIBRARY_PATH, and does not tolerate setting it in the environment.

@executable_path

Similarly, on macOS, the binaries are adjusted with otool to use a relative path.

Documentation

To save space and bandwidth, the original documentation is available online.

Build

The binaries for all supported platforms (Windows, macOS and GNU/Linux) were built using the xPack Build Box (XBB), a set of build environments based on slightly older distributions, that should be compatible with most recent systems.

The scripts used to build this distribution are in:

  • distro-info/scripts

For the prerequisites and more details on the build procedure, please see the README-MAINTAINER page.

CI tests

Before publishing, a set of simple tests were performed on an exhaustive set of platforms. The results are available from:

Tests

The binaries were tested on a variety of platforms, but mainly to check the integrity of the build, not the compiler functionality.

Checksums

The SHA-256 hashes for the files are:

c89264fcb7045421f897c3beb1d70b510aab2ee33d9a9d123a18b73e3f8b72c3
xpack-clang-12.0.1-1-darwin-x64.tar.gz

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xpack-clang-12.0.1-1-linux-arm.tar.gz

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xpack-clang-12.0.1-1-linux-arm64.tar.gz

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xpack-clang-12.0.1-1-linux-ia32.tar.gz

2645701c746a8ba49ddf6b3223acae99bef449ffb23b2a71f8b1364e61ab710c
xpack-clang-12.0.1-1-linux-x64.tar.gz

82d42ea1d81462bdda1f36b8bb0dc4f00d31764ea559c112b6d5d8d226c03762
xpack-clang-12.0.1-1-win32-ia32.zip

a6417c60ae33b41844ed84185f017c056a4c35116e8c87566222f56b024035e3
xpack-clang-12.0.1-1-win32-x64.zip

Deprecation notices

32-bit support

Support for 32-bit x86 GNU/Linux and x86 Windows will most probably be dropped in 2022. Support for 32-bit Arm GNU/Linux will be preserved for a while, due to the large user base of 32-bit Raspberry Pi systems.

GNU/Linux minimum requirements

Support for RedHat 7 will most probably be dropped in 2022, and the minimum requirement will be raised to GLIBC 2.27, available starting with Ubuntu 18 and RedHat 8.

Download analytics

Credit to Shields IO for the badges and to Somsubhra/github-release-stats for the individual file counters.