clang c11 threads.h找不到 [英] clang c11 threads.h not found

问题描述

我试图在xcode ...中设置一个c11线程示例，但它似乎没有threads.h头，虽然它不是关于这里描述的宏：

。

I am trying to setup a c11 thread example in xcode... but it doesn't seem to have the threads.h header, though it isn't complaning about the macro described here:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf

__STDC_NO_THREADS__The integer constant 1, intended to indicate that the implementation does not support the <threads.h> header.

解决方案

With the clang on my machine (v. 3.2 on ubuntu/linux) that feature test macro isn't defined. Support for that feature will need support in the C library, that usually doesn't come with the compiler. So basically the answer for clang will not be much different than for gcc, they usually build upon the same C library, namely glibc, see here for answer for gcc.

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