HElib v2.0.0 on Tiger Lake : compile fails

[christianepeters]

HElib v2.0.0 works on my old Acer Aspire 7 (bought 2014).
New machine (January 2021) does not allow installation of HElib v2.0.0.
Opened issue here: homenc/HElib#434

[christianepeters]

Fix requires going to gcc version 10. On Ubuntu 20.04 as root:

apt-get install g++-10 gcc-10
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-9 100
update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 50
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 100
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 50
update-alternatives --install /usr/bin/cpp cpp-bin /usr/bin/cpp-9 100
update-alternatives --install /usr/bin/cpp cpp-bin /usr/bin/cpp-10 50
update-alternatives --set g++ /usr/bin/g++-10
update-alternatives --set gcc /usr/bin/gcc-10
update-alternatives --set cpp-bin /usr/bin/cpp-10