******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear All- I have to add a couple of cpp routines to NeTar++ and I was trying to compile the NekTar++ on my MacOS monterey. I am landing up in the following issue. I am using the Clang compiler. I also switched it to the gcc compiler but in that case the issue was coming from the Boost Library. I tried to compile Boost from source but no luck. Therefore I had to switch to clang and installed it through macport. I will appreciate your help in this regard. Thanks! Raj /nektar++/library/LibUtilities/SimdLib/scalar.hpp:124:12: error: definition of implicit copy assignment operator for 'scalarT<unsigned long long, void>' is deprecated because it has a user-declared copy constructor [-Werror,-Wdeprecated-copy] inline scalarT(const scalarT &rhs) = default; ^