Doxygen: cannot find the shared library(s) 'libclang.so.6'

Question

While running doxygen I get the following error:

doxygen: error while loading shared libraries: libclang.so.6: cannot open shared object file: No such file or directory

I have installed doxygen using sudo apt install doxygen on Ubuntu 17. In /usr/lib/x86_64-linux-gnu I have libclang-4.0.so.1 and libclang-5.0.so.1 but not libclang.so.6.

I have tried reinstalling doxygen and clang it doesn't help.

I also tried making a symbolic link called libclang.so.6 to the existing file libclang-5.0.so.1 as done here but it leads to this error:

doxygen: /usr/lib/x86_64-linux-gnu/libclang.so.6: version `LLVM_6.0' not found (required by doxygen)

How to resolve this error and get doxygen working?

score 5 · Accepted Answer · edited Dec 12 '18 at 15:50

5

The problem is solved by using this alternative method of installation. Follow these steps:

Get copy of the repository

git clone https://github.com/doxygen/doxygen.git
cd doxygen

Build

mkdir build
cd build
cmake -G "Unix Makefiles" ..
make

Install
```
sudo make install
```

edited Dec 12 '18 at 15:50

albert

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answered Mar 11 '18 at 13:30

arpanmangal

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1

Additionally I needed to set a symbolic link. The complete installation would be: `apt-get install -y flex bison && cd /tmp && git clone https://github.com/doxygen/doxygen.git && cd doxygen && mkdir build && cd build && cmake -G "Unix Makefiles" .. && make && make install && ln -s /usr/local/bin/doxygen /usr/bin/doxygen` – Alexander Bering Jun 28 '18 at 19:44
there should still be some way to install the binary distribution and link to libclang, instead of having to rebuild from source right? – wrapperapps Jul 19 '21 at 18:47
to follow-up on my question, I figured it out and posted the answer here: https://stackoverflow.com/a/68446229/1898523 – wrapperapps Jul 19 '21 at 19:50

score 4 · Answer 2 · answered Jul 19 '21 at 19:49

On Ubuntu 20.04, I successfully installed the binary distribution from https://www.doxygen.nl/download.html#srcbin (doxygen-1.9.1.linux.bin.tar.gz which is "compiled using Ubuntu 20.04 and dynamically linked against libclang version 9"). Then by using apt-file program, I was able to find and install each missing library as follows:

$ doxygen --version
doxygen: error while loading shared libraries: libclang-9.so.1: cannot open shared object file: No such file or directory

$ apt-file search libclang-9.so.1
libclang1-9: /usr/lib/llvm-9/lib/libclang-9.so.1
libclang1-9: /usr/lib/x86_64-linux-gnu/libclang-9.so.1

$ sudo apt install libclang1-9
(...)

$ doxygen --version
doxygen: error while loading shared libraries: libclang-cpp.so.9: cannot open shared object file: No such file or directory

$ apt-file search libclang-cpp.so.9
libclang-cpp9: /usr/lib/llvm-9/lib/libclang-cpp.so.9
libclang-cpp9: /usr/lib/x86_64-linux-gnu/libclang-cpp.so.9

$ sudo apt install libclang-cpp9
(...)

$ doxygen --version
1.9.1 (ef9b20ac7f8a8621fcfc299f8bd0b80422390f4b)

score 0 · Answer 3 · answered Mar 11 '18 at 13:31

firstly add this to your repo

deb http://apt.llvm.org/artful/ llvm-toolchain-artful-6.0 main
deb-src http://apt.llvm.org/artful/ llvm-toolchain-artful-6.0 main

now run the following

wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
apt-get install clang-6.0 lldb-6.0 lld-6.0

--source http://apt.llvm.org/

score 0 · Answer 4 · edited Mar 29 '23 at 16:06

0

You can also install doxygen using:

sudo apt install doxygen

It will install all dependencies by itself.

edited Mar 29 '23 at 16:06

vvvvv

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answered Nov 12 '18 at 12:48

humble_wolf

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Doxygen: cannot find the shared library(s) 'libclang.so.6'

4 Answers4