Merge pull request #2 from dial-once/prevent_using_async_posix_h_in_openssl

Apple marked async_posix.h as non-public API

Author: CAMOBAP

circle.yml

@@ -3,7 +3,7 @@ jobs:
   build:
     working_directory: ~/socket.io-client-cpp
     macos:
-      xcode: "9.0"
+      xcode: "10.0"
     steps:
       - checkout
       - run:

conanfile.txt

@@ -9,6 +9,7 @@ cmake_paths
 
 [options]
 OpenSSL:no_zlib=True
+OpenSSL:no_async=True
 boost:without_python=True
 boost:without_context=True
 boost:without_container=True