Add option to disable building benchmarks

Author: llm96

CMakeLists.txt

@@ -10,6 +10,7 @@ include(GNUInstallDirs)
 include(CTest)
 
 option(IS_UTF8_SANITIZE "Sanitize addresses" OFF)
+option(IS_UTF8_BENCHMARKS "Build benchmarks" ${PROJECT_IS_TOP_LEVEL})
 
 if (NOT CMAKE_BUILD_TYPE)
   message(STATUS "No build type selected, default to Release")
@@ -42,8 +43,9 @@ else()
   message(STATUS "The tests are disabled.")
 endif(BUILD_TESTING)
 
-
-add_subdirectory(benchmarks)
+if (IS_UTF8_BENCHMARKS)
+  add_subdirectory(benchmarks)
+endif()
 
 message(STATUS "Compiling using the C++ standard:" ${CMAKE_CXX_STANDARD})
 # ---- Install rules ----