CDRIVER-3756 eliminate CMake function redefinition

Author: rcsanchez97

CMakeLists.txt

@@ -3,14 +3,6 @@ cmake_minimum_required (VERSION 3.1)
 # Used in MaintainerFlags.cmake to silence errors while testing configs.
 set (MESSAGES_ENABLED 1)
 
-function (message)
-   list (GET ARGV 0 MessageType)
-   if (MESSAGES_ENABLED)
-      list (REMOVE_AT ARGV 0)
-      _message (${MessageType} "${ARGV}")
-   endif ()
-endfunction ()
-
 set (ENABLE_SSL AUTO CACHE STRING
    "Enable TLS connections and SCRAM-SHA-1 authentication. Options are
    \"DARWIN\" to use Apple's Secure Transport, \"WINDOWS\" to use Windows

build/cmake/MaintainerFlags.cmake

@@ -12,9 +12,9 @@ if (ENABLE_MAINTAINER_FLAGS AND NOT MSVC AND NOT MONGOC_MAINTAINER_FLAGS_SET)
 
    foreach (MAINTAINER_FLAG ${MAINTAINER_FLAGS})
       # Avoid useless "Performing Test FLAG_OK" message.
-      set (MESSAGES_ENABLED 0)
+      set (CMAKE_REQUIRED_QUIET 1)
       check_c_compiler_flag ("${MAINTAINER_FLAG}" FLAG_OK)
-      set (MESSAGES_ENABLED 1)
+      set (CMAKE_REQUIRED_QUIET 0)
       if (FLAG_OK)
          message (STATUS "C compiler accepts ${MAINTAINER_FLAG}")
          set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MAINTAINER_FLAG}")