Hi all, Just want to draw OS X users' attention to a compilation bug with METIS on OS X. If you are using Xcode 7.3 (i.e. clang -v says: Apple LLVM version 7.3.0 (clang-703.0.29)), presently there's some kind of low-level bug when compiling METIS which will yield the following error, or one like it: [ 79%] Building C object programs/CMakeFiles/cmpfillin.dir/smbfactor.c.o Linking C executable cmpfillin ld: in ../libmetis/libmetis.a(error.c.o), section __DATA/__thread_bss extends beyond end of file, for architecture x86_64 Right now there is no known workaround for this, other than to use gcc or another compiler version. I therefore thoroughly recommend avoiding Xcode 7.3 for the time being, otherwise you will not be able to compile Nektar++. If you have already upgraded, you can try to downgrade to Xcode 7.2, which continues to work fine. For reference, there is a homebrew bug report here: https://github.com/Homebrew/homebrew-science/issues/3461 and a possible LLVM bug here: https://llvm.org/bugs/show_bug.cgi?id=27059 Cheers, Dave -- David Moxey (Research Fellow) d.moxey@imperial.ac.uk | www.imperial.ac.uk/people/d.moxey Room 363, Department of Aeronautics, Imperial College London, London, SW7 2AZ, UK.