[libcxx-dev] Problem installing libcxx and libcxxabi using Bootstrapping on Amazon Linux 2

[Raul Tambre via libcxx-dev]

 > Is there a better way than above 3 (manual fixes) to add 
"/usr/local/lib/x86_64-unknown-linux-gnu" in id's search path?

Install it somewhere that's on ld's default search path (see ld --verbose).
/usr/local/lib is likely on it and an arch variant too, but I'm not familiar 
with RHEL.
This would be the third fix you noted. You shouldn't need to manually specify 
the search path afterwards.