>> 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.
Whoops... here was the form: http://llvm.org/releases/3.7.0/docs/ReleaseNotes.html. >> 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: Oh, that's a good point; thanks. That should work for both LLVM Clang and Apple Clang (mostly same tool; different versioning schemes). Jeff _______________________________________________ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
