We need to add a line to ignore
warning: empty struct has size 0 in C, size 1 in C++ [-Wextern-c-compat
to the libunwind SConscript.
We should investigate the impacts of the warning and if it's something should be fixed we should fix it in our fork and try to upstream it.
- related to
SERVER-65893 Add 6.0 platform builders for v4 gcc and clang