cmake/Modules/SelectRTBackend.cmake

   1 include(CheckLibraryExists)
   2 include(CheckFunctionExists)
   3
   4 function(SelectRTBackend)
   5   check_library_exists(rt clock_gettime "time.h" HAVE_CLOCK_GETTIME_RT)
   6
   7   if(NOT HAVE_CLOCK_GETTIME_RT)
   8     check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
   9     if(NOT HAVE_CLOCK_GETTIME)
  10       check_library_exists(c clock_get_time "mach/time.h" HAVE_CLOCK_GET_TIME)
  11       if(NOT HAVE_CLOCK_GET_TIME)
  12         message(FATAL_ERROR "Didn't find clock_gettime() or clock_get_time()!")
  13       endif()
  14     endif()
  15   else()
  16     set(LIBRT rt PARENT_SCOPE)
  17   endif()
  18 endfunction()