-DCOMPILE_SERVER is broken with OpenSSL >= 3

[XapaJIaMnu]

Bug description

When trying to compile marian server, on ubuntu 22.04 one runs into tons of:

In file included from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp: In static member function ‘static std::string SimpleWeb::Crypto::md5(std::istream&, std::size_t)’:
marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:118:15: error: ‘int MD5_Init(MD5_CTX*)’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  118 |       MD5_Init(&context);
      |       ~~~~~~~~^~~~~~~~~~
In file included from marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:13,
                 from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
/usr/include/openssl/md5.h:49:27: note: declared here
   49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c);
      |                           ^~~~~~~~
In file included from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:122:19: error: ‘int MD5_Update(MD5_CTX*, const void*, size_t)’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  122 |         MD5_Update(&context, buffer.data(), static_cast<std::size_t>(read_length));
      |         ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:13,
                 from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
/usr/include/openssl/md5.h:50:27: note: declared here
   50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len);
      |                           ^~~~~~~~~~
In file included from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:125:16: error: ‘int MD5_Final(unsigned char*, MD5_CTX*)’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  125 |       MD5_Final(reinterpret_cast<unsigned char *>(&hash[0]), &context);
      |       ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from marian-dev/src/3rd_party/simple-websocket-server/crypto.hpp:13,
                 from marian-dev/src/3rd_party/simple-websocket-server/server_ws.hpp:5,
                 from marian-dev/src/command/marian_server.cpp:7:
/usr/include/openssl/md5.h:51:27: note: declared here
   51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c);

It seems the simple-websocket-server has been updated and fixed, but it has been moved to gitlab so fetching upstream is not as trivial: https://gitlab.com/eidheim/Simple-WebSocket-Server @snukky maybe a simple update of the submodule will fix this.

How to reproduce

Try compiling with: cmake .. -DCOMPILE_SERVER=ON

Context

• Marian version: marian-dev master
• CMake command: cmake .. -DCOMPILE_SERVER=ON
• Log file: Attach your training/decoding logs

[snukky]

Fixed in #962