C11 GCC threads.h not found? The following code #include Gives me this error: fatal error: threads.h: No such file or directory Using the latest GCC and Clang with -std=c11. Is C11 threading not supported by GCC and Clang? Or is there a hack (or something to install) to get it? I'm just using Ubuntu 14.04 with the gcc and clang packages from the Ubuntu repo.그gcc문서 C11 상태는 쓰레드를 지원하지 않는다는 것을 나타냅니다..