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Annotation of embedaddon/libiconv/srcm4/stat-time.m4, revision 1.1

1.1     ! misho       1: # Checks for stat-related time functions.
        !             2: 
        !             3: # Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2019 Free Software
        !             4: # Foundation, Inc.
        !             5: 
        !             6: # This file is free software; the Free Software Foundation
        !             7: # gives unlimited permission to copy and/or distribute it,
        !             8: # with or without modifications, as long as this notice is preserved.
        !             9: 
        !            10: dnl From Paul Eggert.
        !            11: 
        !            12: # st_atim.tv_nsec - Linux, Solaris, Cygwin
        !            13: # st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE
        !            14: # st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE
        !            15: # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
        !            16: 
        !            17: # st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway)
        !            18: # st_birthtim - Cygwin 1.7.0+
        !            19: 
        !            20: AC_DEFUN([gl_STAT_TIME],
        !            21: [
        !            22:   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
        !            23:   AC_CHECK_HEADERS_ONCE([sys/time.h])
        !            24: 
        !            25:   AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec],
        !            26:     [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec],
        !            27:        [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec],
        !            28:        [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
        !            29:           [[
        !            30:             #include <sys/types.h>
        !            31:             #include <sys/stat.h>
        !            32:             #if HAVE_SYS_TIME_H
        !            33:             # include <sys/time.h>
        !            34:             #endif
        !            35:             #include <time.h>
        !            36:             struct timespec ts;
        !            37:             struct stat st;
        !            38:           ]],
        !            39:           [[
        !            40:             st.st_atim = ts;
        !            41:           ]])],
        !            42:           [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes],
        !            43:           [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])])
        !            44:      if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then
        !            45:        AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1],
        !            46:          [Define to 1 if the type of the st_atim member of a struct stat is
        !            47:           struct timespec.])
        !            48:      fi],
        !            49:     [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
        !            50:        [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
        !            51:           [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [],
        !            52:              [#include <sys/types.h>
        !            53:               #include <sys/stat.h>])],
        !            54:           [#include <sys/types.h>
        !            55:            #include <sys/stat.h>])],
        !            56:        [#include <sys/types.h>
        !            57:         #include <sys/stat.h>])],
        !            58:     [#include <sys/types.h>
        !            59:      #include <sys/stat.h>])
        !            60: ])
        !            61: 
        !            62: # Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.)
        !            63: # and NTFS (Cygwin).
        !            64: # There was a time when this field was named st_createtime (21 June
        !            65: # 2002 to 16 July 2002) But that window is very small and applied only
        !            66: # to development code, so systems still using that configuration are
        !            67: # not supported.  See revisions 1.10 and 1.11 of FreeBSD's
        !            68: # src/sys/ufs/ufs/dinode.h.
        !            69: #
        !            70: AC_DEFUN([gl_STAT_BIRTHTIME],
        !            71: [
        !            72:   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
        !            73:   AC_CHECK_HEADERS_ONCE([sys/time.h])
        !            74:   AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [],
        !            75:     [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [],
        !            76:       [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [],
        !            77:          [#include <sys/types.h>
        !            78:           #include <sys/stat.h>])],
        !            79:        [#include <sys/types.h>
        !            80:         #include <sys/stat.h>])],
        !            81:     [#include <sys/types.h>
        !            82:      #include <sys/stat.h>])
        !            83: ])