I get it. I figured that function might be missing from my libc. I found a replacement for that function online last night (with unknown license at present) that I thought I might be able to crib.
<https://raw.githubusercontent.com/cloudius-systems/osv/master/libc/cxa_thread_atexit.cc> Thanks. WIll see if I can put it all together. Thanks, Ken On 2016-10-09, at 12:53 AM, Jeremy Huddleston Sequoia wrote: > thread_local support was added in OS X 10.9 (along with __cxa_thread_atexit > being added to Libc as part of that support). As long as your minimum > deployment target is 10.9, you should be fine. The issue is that you're on > 10.6, so you don't have __cxa_thread_atexit. > > There is active conversation right now about adding a fallback implementation > of __cxa_thread_atexit directly into libcxxabi. See > https://reviews.llvm.org/D21803 as that might be quite useful for your needs. > If so, provide a patch to libcxxabi that incorporates it, and I'll get it in. > > Thanks, > Jeremy > > >> On Oct 8, 2016, at 23:06, Ken Cunningham <ken.cunningham.web...@gmail.com> >> wrote: >> >> >> On 2016-10-08, at 10:03 PM, Stephen J. Butler wrote: >> >>> FYI, it's in the Xcode 8 release notes: >>> >>> https://developer.apple.com/library/content/releasenotes/DeveloperTools/RN-Xcode/Introduction.html >>> >>> I did a quick test file and it seems to compile with Apple clang. No clue >>> on compatibility issues though. >>> >> >> Thanks! >> >> >>> Thanks for finding and sharing that information. It sounds like you could >>> get TLS by using MacPorts clang instead of Xcode clang, but that it will be >>> incompatible with whatever TLS implementation Apple eventually creates. >> >> >> I had hoped it would be in the macports-clang-3.7 build I'm using, but it >> seems to error out. >> >> However, I noticed this bit in the the libcxxabi port >> >> libcxxabi-3.7.0.src/include/cxxabi.h >> >> >> #ifdef __linux__ >> // Linux TLS support. Not yet an official part of the Itanium ABI. >> // >> https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables >> extern int __cxa_thread_atexit(void (*)(void *), void *, void *) throw(); >> #endif >> >> and - if I open up that guard, it actually builds cleanly on MacOSX. >> >> I wonder if TLS support was just disabled on all but Linux...perhaps I'll >> try installing this new version I just built and see what happens. --- after >> I back everything up :> >> >> Ken >> _______________________________________________ >> macports-dev mailing list >> macports-dev@lists.macosforge.org >> https://lists.macosforge.org/mailman/listinfo/macports-dev > _______________________________________________ macports-dev mailing list macports-dev@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-dev
