buildtools/Cmake/Modules/FindNbCore.cmake

   1 if(NOT DEFINED PROCESSOR_COUNT)
   2   # Default:
   3   set(PROCESSOR_COUNT 1)
   4
   5   # Linux:
   6   set(cpuinfo_file "/proc/cpuinfo")
   7   if(EXISTS "${cpuinfo_file}")
   8     file(STRINGS "${cpuinfo_file}" procs REGEX "^processor.: [0-9]+$")
   9     list(LENGTH procs PROCESSOR_COUNT)
  10   endif()
  11
  12   # Mac:
  13   if(APPLE)
  14     find_program(cmd_sys_pro "system_profiler")
  15     if(cmd_sys_pro)
  16       execute_process(COMMAND ${cmd_sys_pro} OUTPUT_VARIABLE info)
  17       string(REGEX REPLACE "^.*Total Number Of Cores: ([0-9]+).*$" "\\1"
  18         PROCESSOR_COUNT "${info}")
  19     endif()
  20   endif()
  21
  22   # Windows:
  23   if(WIN32)
  24     set(PROCESSOR_COUNT "$ENV{NUMBER_OF_PROCESSORS}")
  25   endif()
  26 endif()
  27
  28 message(STATUS "Number of core ${PROCESSOR_COUNT}")