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?
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.
In Ubuntu 16.04, your options are clang-3.5, clang-3.6, clang-3.7, and clang-3.8.
In Ubuntu 14.04, your options are clang-3.3 
, clang-3.4 , and 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.)
If you're running Ubuntu 12.04, there's only one package that provides clang and clang++, so it's just called clang .
make install, but lots of permission denied appeared.
– Amir
Nov 08 '14 at 21:59
clang-3.5 package does seem to exist for 14.04, yet you are right that the Software Center link for it doesn't work. I don't have a 14.04 system to test this on right now. Can someone with (and with the universe repository enabled) check the output of apt list clang\*?
– Eliah Kagan
Apr 10 '15 at 16:16
clang-3.8 installed, I added a soft link for clang++ (by default, I only had /usr/bin/clang++-3.8). For example: sudo ln -s /usr/bin/clang++-3.8 /usr/bin/clang++.
– rkersh
Jan 27 '17 at 17:34
./configure --prefix $HOME/somewhere Then when you make and make install, it installs it in your home directory where you said. Then you simply PATH=$HOME/somewhere:$PATH, and there you go, this terminal will find it. You can set your bash so it will just set PATH like that always, in your .bashrc or something.
– doug65536
Mar 29 '23 at 18:06
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
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
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
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
sudo apt-get install -y clang-14 lld-14
Found latest release here: https://packages.ubuntu.com/jammy/clang-14
sudo apt install clang
– Sami
Sep 15 '23 at 11:07
sudo apt update– Andrew Jul 18 '23 at 20:26