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user313944
Asked: 2014-08-10 16:54:49 +0800 CST

How to install clang++?

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I'm having trouble getting clang++ to work as I compile my code. Specifically, I'm getting a make: clang++: Command not found error.

I've run sudo apt-get install llvm, and also sudo apt-get install build-essential and sudo apt-get update. What do I have to do to get clang++ installed?

gcc

3 Answers

  1. Installing the llvm and build-essential packages, as you have done, does not cause clang or clang++ to be installed. For that, you must install one of the clang packages, depending on which version of clang and clang++ you want.

    16.04

    In Ubuntu 16.04, your options are clang-3.5, clang-3.6, clang-3.7, and clang-3.8.

    14.04

    In Ubuntu 14.04, your options are clang-3.3 Install clang-3.3, clang-3.4 Install clang-3.4, and clang-3.5 Install clang-3.5.

    You can install them in the Software Center, or with:

    sudo apt-get update
sudo apt-get install clang-3.n

    (Replacing n with the desired sub-version, of course.)

    12.04

    If you're running Ubuntu 12.04, there's only one package that provides clang and clang++, so it's just called clang Install clang.

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  2. 18.04 (Bionic)

    I visited http://apt.llvm.org/bionic/dists/ (i.e. bionic distributions).
    I determined that 6.0 was the latest major version of the toolchain.

    I assume that you'll want the linker, lld, also.

    # grab the key that LLVM use to GPG-sign binary distributions
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-get update
sudo apt-add-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-6.0 main"
sudo apt-get install -y clang-6.0 lld-6.0

    This gives you binaries with the following names (and more, probably):

    clang-6.0
clang++-6.0
lld-6.0
ld.lld-6.0

    It also installs these packages (and more):

    llvm-6.0
llvm-6.0-dev
llvm-6.0-runtime

    17.04 (Artful)

    Same as above. I'll repeat every line for convenient copy-paste.

    # grab the key that LLVM use to GPG-sign binary distributions
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-get update
sudo apt-add-repository "deb http://apt.llvm.org/artful/ llvm-toolchain-artful-6.0 main"
sudo apt-get install -y clang-6.0 lld-6.0

    16.04 (Xenial)

    The accepted answer already gives instructions for installing clang-3.8 on 16.04, but here's how to get clang-6.0:

    # grab the key that LLVM use to GPG-sign binary distributions
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-get update
sudo apt-add-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-6.0 main"
sudo apt-get install -y clang-6.0 lld-6.0
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  3. Before proceeding it will be worthwhile to update package information using sudo apt-get update

    Installing Clang 9 on Ubuntu 18

    sudo apt-get install clang-tools-9

    It will also install llvm-9

    For more information follow clang documentation.

    Installing Clang 10 on Ubuntu 18

    sudo apt-get install clang-tools-10

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