EricWF added a comment. In https://reviews.llvm.org/D31272#711876, @mehdi_amini wrote:
> Strange. So installing the command line tools is not enough. It has to be > that CMAKE_OSX_SYSROOT is only defined on Apple internal install maybe? Are you sure you're starting with a clean CMake build directory? > Anyway, if you're exporting through the ABI list and have > LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS I expect the link to fail. You're not > observing this? I am not observing this, and LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS is ON. I also added `-DCMAKE_OSX_SYSROOT=""` but that had no effect as I would expect. > I have this error: > > ld: requested re-export symbol operator new(unsigned long) is not from a > dylib, but from lib/CMakeFiles/cxx_objects.dir/__/src/new.cpp.o > file 'lib/CMakeFiles/cxx_objects.dir/__/src/new.cpp.o' for architecture > x86_64 Interesting. That seems to suggest that `libc++abi.dylib` doesn't provide the definition at all. Not necessarily that the duplicate definitions are causing this. > I can reproduce with: `cmake -GNinja -DCMAKE_OSX_SYSROOT="" path/to/libcxx` Here is the script I use to build libc++ on https://gist.github.com/EricWF/0bc0ba09b8844d0201b18a01f8f7ffb9. https://reviews.llvm.org/D31272 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
