Add compatibility flat to OpenSSL 1.1.1 version

Avoid deprecated messages until the code is fully compliant with version 3.x

Makefile

@@ -6,7 +6,7 @@ LUACPATH ?= /usr/lib/lua/5.1
 # Comment this lines if you will link with non-internal LuaSocket's help files
 #  and edit INCDIR and LIBDIR properly.
 EXTRA = luasocket
-DEFS  = -DWITH_LUASOCKET
+DEFS  = -DWITH_LUASOCKET -DOPENSSL_API_COMPAT=0x10101000L
 
 # Edit the lines below to inform new path, if necessary.
 # Path below points to internal LuaSocket's help files.

luasec-1.3.2-1.rockspec

@@ -46,7 +46,7 @@ build = {
          modules = {
             ssl = {
                defines = {
-                  "WITH_LUASOCKET", "LUASOCKET_DEBUG",
+                  "WITH_LUASOCKET", "LUASOCKET_DEBUG", "OPENSSL_API_COMPAT=0x10101000L"
                },
                incdirs = {
                   "$(OPENSSL_INCDIR)", "src/", "src/luasocket",
@@ -80,7 +80,8 @@ build = {
                defines = {
                   "WIN32", "NDEBUG", "_WINDOWS", "_USRDLL", "LSEC_EXPORTS", "BUFFER_DEBUG", "LSEC_API=__declspec(dllexport)",
                   "WITH_LUASOCKET", "LUASOCKET_DEBUG",
-                  "LUASEC_INET_NTOP", "WINVER=0x0501", "_WIN32_WINNT=0x0501", "NTDDI_VERSION=0x05010300"
+                  "LUASEC_INET_NTOP", "WINVER=0x0501", "_WIN32_WINNT=0x0501", "NTDDI_VERSION=0x05010300",
+                  "OPENSSL_API_COMPAT=0x10101000L"
                },
                libdirs = {
                   "$(OPENSSL_LIBDIR)",

src/luasocket/timeout.c

@@ -146,7 +146,7 @@ int timeout_open(lua_State *L) {
 #if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
     luaL_setfuncs(L, func, 0);
 #else
-    luaL_openlib(L, NULL, func, 0);
+    luaL_register(L, NULL, func);
 #endif
     return 0;
 }