message: Make WORKER_THREADS a cached variable
diff: @@ -373,11 +373,14 @@ else()
  endif()
  if((NOT CMAKE_BUILD_TYPE STREQUAL "Debug") AND NOT SAN)
  - set(WORKER_THREADS 2)
  + set(DEFAULT_WORKER_THREADS 2)
  else()
  - set(WORKER_THREADS 0)
  + set(DEFAULT_WORKER_THREADS 0)
  endif()
  -message(STATUS "Setting default WORKER_THREADS to '${WORKER_THREADS}'")
  +set(WORKER_THREADS
  + "${DEFAULT_WORKER_THREADS}"
  + CACHE STRING "Number of worker threads to start on each CCF node"
  +)
  set(CCF_NETWORK_TEST_ARGS
  ${TEST_IGNORE_QUOTE}
  