Add macOS support #34

cmake/libraries/cpp_httplib.cmake

@@ -15,6 +15,7 @@ if(PROJECT_ENABLE_CPP_HTTPLIB)
       CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
         -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
         -DBUILD_STATIC_LIBS=ON
+        -DCMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
         -DHTTPLIB_REQUIRE_BROTLI=OFF
         -DHTTPLIB_REQUIRE_OPENSSL=ON
         -DHTTPLIB_REQUIRE_ZLIB=ON
@@ -31,5 +32,8 @@ if(PROJECT_ENABLE_CPP_HTTPLIB)
     if (NOT CMAKE_HOST_WIN32)
       add_dependencies(cpphttplib_project openssl_project)
     endif()
+    if (PROJECT_IS_DARWIN)
+      add_dependencies(cpphttplib_project zlib_project)
+    endif()
   endif()
 endif()