message: Pass raw string, without quotes, to lit config to make it work on all OSes
diff: @@ -46,9 +46,9 @@ list(APPEND LIT_ARGS "-Dispc_test_exec_root=${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${
  # LLVM version used to build ISPC
  list(APPEND LIT_ARGS "-Dispc_llvm_version_number=${LLVM_VERSION_NUMBER}")
  # ISPC enabled targets
  -list(APPEND LIT_ARGS "-Dx86_enabled=$<IF:$<BOOL:${X86_ENABLED}>,'ON','OFF'>")
  -list(APPEND LIT_ARGS "-Darm_enabled=$<IF:$<BOOL:${ARM_ENABLED}>,'ON','OFF'>")
  -list(APPEND LIT_ARGS "-Dwasm_enabled=$<IF:$<BOOL:${WASM_ENABLED}>,'ON','OFF'>")
  +list(APPEND LIT_ARGS "-Dx86_enabled=$<IF:$<BOOL:${X86_ENABLED}>,ON,OFF>")
  +list(APPEND LIT_ARGS "-Darm_enabled=$<IF:$<BOOL:${ARM_ENABLED}>,ON,OFF>")
  +list(APPEND LIT_ARGS "-Dwasm_enabled=$<IF:$<BOOL:${WASM_ENABLED}>,ON,OFF>")
  add_custom_target(check-all DEPENDS ispc
  COMMAND ${LIT_COMMAND} ${LIT_ARGS}
  COMMENT "Running lit tests"
  