Problem

Last night, when I tried to write a new file hello.cpp, I got the following problem.

"hello.cpp" 8L, 105C
Loading libclang failed, completion won't be available. Are you sure '/usr/lib/'
 contains libclang?
/usr/lib//libclang.so: cannot open shared object file: No such file or direc
tory. To provide a path to libclang use Config.set_library_path() or Config.set_
library_file().

Press ENTER or type command to continue

Solution

I googled “loading libclang failed”, and skimmed two results. The first one was an clang complete issue on GitHub.¹ However, at first glance, the problem was on Ubuntu 13.10, not 14.04, and the error messages didn’t resemble the above message. The second one was a Stack Overflow question.² From the first answer, I knew that I need to check if libclang1 package was installed. dkpg -l | grep clang told me that I’d got clang. I read the second answer, and viewed the list of files in /usr/lib/. There’s no folders whose name started with x86, and no file called libclang.so.1 in each sub-folder. Looking at the issue again on GitHub, I found out how to make use of the information from both sites.

[root@localhost /usr/lib/]# ln -s /usr/lib/llvm-3.4/lib/libclang.so .

To avoid problems, I didn’t set Vim global variable clang_library_path.

I didn’t know whether .1 should be appended to the end of libclang.so. Finally, I didn’t do so, and the plugin just worked.

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