cmake/FindStatNsec.cmake

   1 INCLUDE(FeatureSummary)
   2
   3 CHECK_STRUCT_HAS_MEMBER ("struct stat" st_mtim "sys/types.h;sys/stat.h"
   4         HAVE_STRUCT_STAT_ST_MTIM LANGUAGE C)
   5 CHECK_STRUCT_HAS_MEMBER ("struct stat" st_mtimespec "sys/types.h;sys/stat.h"
   6         HAVE_STRUCT_STAT_ST_MTIMESPEC LANGUAGE C)
   7 CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtime_nsec sys/stat.h
   8         HAVE_STRUCT_STAT_MTIME_NSEC LANGUAGE C)
   9
  10 IF (HAVE_STRUCT_STAT_ST_MTIM)
  11         CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtim.tv_nsec sys/stat.h
  12                 HAVE_STRUCT_STAT_NSEC LANGUAGE C)
  13 ELSEIF (HAVE_STRUCT_STAT_ST_MTIMESPEC)
  14         CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtimespec.tv_nsec sys/stat.h
  15                 HAVE_STRUCT_STAT_NSEC LANGUAGE C)
  16 ELSE ()
  17         SET( HAVE_STRUCT_STAT_NSEC ON )
  18 ENDIF()
  19
  20 IF (HAVE_STRUCT_STAT_NSEC OR WIN32)
  21         OPTION( USE_NSEC                "Care about sub-second file mtimes and ctimes"  ON  )
  22 ELSE()
  23         SET(USE_NSEC OFF)
  24 ENDIF()
  25
  26 ADD_FEATURE_INFO(nanoseconds USE_NSEC "whether to use sub-second file mtimes and ctimes")