clang编译器无法在终端Mac OSX上运行

Question

I just upgraded to El Capitan and found out that the C compiler (Clang) is not working under the command line. I wrote a "hello word" test, tried to compile and I get the following error:

$ cc test.c -o test

$ error: unable to open output file

  '/var/folders/Ge/GeRStfi8Ek8jojLcqf1vsE+++TI/-Tmp-/test-ad7039.o': 'No

  such file or directory'

1 error generated.

... do I have a permission problems somewhere? Thanks!

Answer 1

Either you're running into permissions problems (the compiler is unable to create a folder inside var , and so there's no such file or directory) or the ability to open the file in the current directory of compilation isn't allowed. Check your permissions on

• The file
• The directory

Run the command under sudo . If that fixes your problem, then use ls -la to check your permissions in the current folder. Then, use chown or chmod to change the permissions on the file/folder.

Example:

chown owner-user test.c

Now, you may actually not actually have access to the /var/ folder. If so, then the temp folder cc is creating is the problem. So then, you'd sudo call cc . For a more permanent fix, you can chown the binary or directory clang is in.