kc3-lang/gnulib/m4/stat-time.m4

• Show log

  Commit

• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

Download

• m4/stat-time.m4

• # Checks for stat-related time functions.
  
  # Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2023 Free Software
  # Foundation, Inc.
  
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
  
  dnl From Paul Eggert.
  
  # st_atim.tv_nsec - Linux, Solaris, Cygwin
  # st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
  # st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
  # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
  
  # st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
  # st_birthtim - Cygwin 1.7.0+
  
  AC_DEFUN([gl_STAT_TIME],
  [
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
    AC_CHECK_HEADERS_ONCE([sys/time.h])
  
    AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
      [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
         [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
         [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
            [[
              #include <sys/types.h>
              #include <sys/stat.h>
              #if HAVE_SYS_TIME_H
              # include <sys/time.h>
              #endif
              #include <time.h>
              struct timespec ts;
              struct stat st;
            ]],
            [[
              st.st_atim = ts;
            ]])],
            [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
            [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
       if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
         AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
           [Define to 1 if the type of the st_atim member of a struct stat is
            struct timespec.])
       fi],
      [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
         [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
            [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
               [#include <sys/types.h>
                #include <sys/stat.h>])],
            [#include <sys/types.h>
             #include <sys/stat.h>])],
         [#include <sys/types.h>
          #include <sys/stat.h>])],
      [#include <sys/types.h>
       #include <sys/stat.h>])
  ])
  
  # Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
  # and NTFS (Cygwin).
  # There was a time when this field was named st_createtime (21 June
  # 2002 to 16 July 2002) But that window is very small and applied only
  # to development code, so systems still using that configuration are
  # not supported.  See revisions 1.10 and 1.11 of FreeBSD's
  # src/sys/ufs/ufs/dinode.h.
  #
  AC_DEFUN([gl_STAT_BIRTHTIME],
  [
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
    AC_CHECK_HEADERS_ONCE([sys/time.h])
    AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
      [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
        [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
           [#include <sys/types.h>
            #include <sys/stat.h>])],
         [#include <sys/types.h>
          #include <sys/stat.h>])],
      [#include <sys/types.h>
       #include <sys/stat.h>])
  ])
  

Download