How can I find the actual Clang version on Mac?


Solution 1

launch terminal and enter:

clang --version

Apple clang version 11.0.0 (clang-1100.0.33.16)

Solution 2

This wikipedia table maps Xcode and Apple clang versions to LLVM versions. Your clang-902.0.39.1 appears to be based on LLVM 5.0.2.

Solution 3

You could try using

echo | clang -dM -E - | grep __clang

and maybe that will give you more reliable numbers. Although I'm speculating since I'm not on a Mac.

Also, clang has had the -pedantic option for a long long time - many versions before 6.0. -pedantic is a GCC option and clang takes after GCC in its options.

Lone Learner
Author by

Lone Learner

Updated on June 28, 2022


  • Lone Learner
    Lone Learner 3 months

    Note: None of the answers provided at Get Apple clang version and corresponding upstream LLVM version seems to work anymore.

    The download page at and the Wikipedia article at seems to indicate that the most recent Clang version is 6.0.0.

    But on my macOS High Sierra version 10.13.3, I see this output:

    $ clang --version
    Apple LLVM version 9.1.0 (clang-902.0.39.1)
    Target: x86_64-apple-darwin17.4.0
    Thread model: posix
    InstalledDir: /Library/Developer/CommandLineTools/usr/bin
    $ which clang

    This does not seem right. Why is the Apple's version of Clang greater than the current version of Clang?

    How do I find out which version of Clang hosted on does my Mac's version of Clang correspond to?

    I ask this because I see documenting a -pedantic option for the clang command line, but it is not documented in the man page of clang on my system.

    $ man clang | grep pedantic
    $ clang --help | grep pedantic
  • ng10
    ng10 over 2 years
    or g++ --version if you are using g++
  • Vittore Marcas
    Vittore Marcas 8 months
    This answer takes me eight hours. But I think, Leave enough blank lines between each sentence to make it clearer. If I sacrifice the necessary blank lines, then I can edit it again.