ERL-571: relax undefined symbol checks for nifs on dlopen

[OTP-Maintainer]

Original reporter: vans163
Affected version: Not Specified
Component: erts
Migrated from: https://bugs.erlang.org/browse/ERL-571

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https://stackoverflow.com/questions/27868890/undefined-symbols-on-erlang-nif-shared-library

Some libraries we use ship with undefined symbols by nature. And they are so huge it will cost significant resources to fix all the undefined symbols.

Is it possible to add an option to determine how dlopen gets called RTLD_NOW | RTLD_GLOBAL vs RTLD_LAZY?

[OTP-Maintainer]

sverker said:

This is not a high priority for us right now, but it seems like a reasonable feature so a PR is welcome.

I think such option should be passed as a third argument to erlang:load_nif.
What would the option be called, maybe {symbols, now | lazy}?
What would happen if not supported (Windows)?