Exclude flowbench target from all

CMakeLists.txt

@@ -164,6 +164,7 @@ endif()
 add_subdirectory(fdbbackup)
 add_subdirectory(contrib)
 add_subdirectory(tests)
+add_subdirectory(flowbench EXCLUDE_FROM_ALL)
 if(WITH_PYTHON)
   add_subdirectory(bindings)
 endif()
@@ -177,11 +178,6 @@ else()
   include(CPack)
 endif()
 
-set(BUILD_FLOWBENCH OFF CACHE BOOL "Build microbenchmark program (builds google microbenchmark dependency)")
-if(BUILD_FLOWBENCH)
-  add_subdirectory(flowbench)
-endif()
-
 if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
   add_link_options(-lexecinfo)
 endif()

flowbench/README.md

@@ -11,7 +11,7 @@ Summary
 Usage
 =====
 
-- To build the `flowbench` executable, add `-DBUILD_FLOWBENCH=ON` to your cmake command.
+- To build the `flowbench` executable, run `ninja flowbench` or `make flowbench` depending on which build system you're using.
 - Then you can run `bin/flowbench --help` to see possible uses of `flowbench`.
 - Running `bin/flowbench` directly will run all registered benchmarks, but you may want to limit your run to a subset of benchmarks. This can be done by running `bin/flowbench --benchmark_filter=<regex>`
 - All benchmark names can be listed with `bin/flowbench --benchmark_list_tests`