Version: v10.13.0
Platform: Linux e4b2ecc253f9 4.9.125-linuxkit x86_64 GNU/Linux (Docker in Mac)
clang version: 7.0.0 (tags/RELEASE_700/final)

When compiling openssl tons of warning are printed like this:

warning: unknown warning option '-Wno-old-style-declaration'; did you mean '-Wno-out-of-line-declaration'? [-Wunknown-warning-option]
1 warning generated.
  CC(target) /mediasoup/worker/out/Release/obj.target/openssl/deps/openssl/openssl/crypto/x509v3/v3_akeya.o

It does not happen when using GCC compiler, but just with clang, which seems to not support
this option the cause.