Question: is libiwasm.so supported as official C API ?

[vlhomutov]

Hello and thank you for your effort!

I'm using libiwasm to develop an application embeddubg wasm things
and I found that recent releases build libiwasm with hidden symbols,
so it is not possible to use the library.

I can remove 'fvisibility=hidden' from CMekLists.txt, but I expect some
official way to build libiwasm without patching sources.

Thus the question is: am I missing somehting or
it is a purely internal things and I should not be using it ? (this would be pity)

[lum1n0us]

Please refer to #3957. if using __GUNC__ and __clang__, the visibility should be default.