On Mac OS X, add the "-arch" option to the 'mysql_config' output

scripts/CMakeLists.txt

@@ -93,6 +93,10 @@ IF(CMAKE_GENERATOR MATCHES "Makefiles")
   # No multiconfig build - use CMAKE_C_FLAGS
   SET(CFLAGS "@CMAKE_C_FLAGS@")
   SET(CXXFLAGS "@CMAKE_CXX_FLAGS@")
+  FOREACH(ARCH ${CMAKE_OSX_ARCHITECTURES})
+    SET(CFLAGS   "${CFLAGS} -arch ${ARCH}")
+    SET(CXXFLAGS "${CXXFLAGS} -arch ${ARCH}")
+  ENDFOREACH()
 ELSE()
   # Multiconfig build - use CMAKE_C_FLAGS_RELWITHDEBINFO
   SET(CFLAGS "@CMAKE_C_FLAGS_RELWITHDEBINFO@")