message: Document USE_SNMALLOC
diff: @@ -237,7 +237,11 @@ if("sgx" IN_LIST COMPILE_TARGETS)
  install(TARGETS cchost DESTINATION bin)
  endif()
  -option(USE_SNMALLOC "should snmalloc be used" ON)
  +# This option controls whether to link virtual builds against snmalloc rather
  +# than use the system allocator. In builds using Open Enclave, enclave
  +# allocation is managed separately and enabling snmalloc is done by linking
  +# openenclave::oesnmalloc
  +option(USE_SNMALLOC "Link virtual build against snmalloc" ON)
  if("virtual" IN_LIST COMPILE_TARGETS)
  if(SAN OR NOT USE_SNMALLOC)
  