Hi Jeffrey, On Mon, Jun 6, 2016 at 12:16 PM, Jeffrey Walton via cfe-users <cfe-users@lists.llvm.org> wrote: > I'm having trouble determining feature availability at compile time. > We don't use Autotools and friends; rather, we use the preprocessor. > > I've been through the release notes from 2.8 through 3.5 (form: ), and > I can't find mention of mutex. > > I've also been to the latest docs, and I can't find a > __has_feature(cxx_mutex) or similar > (http://clang.llvm.org/docs/LanguageExtensions.html). > > Finally, I visited http://clang.llvm.org/cxx_status.htmlbut there is > no topic or item for mutex. There is a statement "Clang 3.3 and later > implement all of the ISO C++ 2011 standard", so I guess that's the > version I should use in the absence of better information.
std::mutex is not a feature of the compiler (clang). It is a feature of the C++ Standard Library (libcxx). You should look for the <mutex> header. If the following compiles, then mutex should be available: #include <mutex> std::mutex m; Csaba -- GCS a+ e++ d- C++ ULS$ L+$ !E- W++ P+++$ w++$ tv+ b++ DI D++ 5++ The Tao of math: The numbers you can count are not the real numbers. Life is complex, with real and imaginary parts. "Ok, it boots. Which means it must be bug-free and perfect. " -- Linus Torvalds "People disagree with me. I just ignore them." -- Linus Torvalds _______________________________________________ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
