| 1 | #serial 7
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| 2 |
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| 3 | # Copyright (C) 1998, 1999, 2001, 2003, 2004, 2006 Free Software
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| 4 | # Foundation, Inc.
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| 5 |
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| 6 | # This file is free software; the Free Software Foundation
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| 7 | # gives unlimited permission to copy and/or distribute it,
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| 8 | # with or without modifications, as long as this notice is preserved.
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| 9 |
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| 10 | dnl Shamelessly cloned from acspecific.m4's AC_FUNC_UTIME_NULL,
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| 11 | dnl then do case-insensitive s/utime/utimes/.
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| 12 |
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| 13 | AC_DEFUN([gl_FUNC_UTIMES_NULL],
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| 14 | [AC_CACHE_CHECK(whether utimes accepts a null argument, ac_cv_func_utimes_null,
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| 15 | [rm -f conftest.data; > conftest.data
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| 16 | AC_TRY_RUN([
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| 17 | /* In case stat has been defined to rpl_stat, undef it here. */
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| 18 | #undef stat
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| 19 | #include <sys/types.h>
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| 20 | #include <sys/stat.h>
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| 21 | #include <sys/time.h>
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| 22 | int
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| 23 | main () {
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| 24 | struct stat s, t;
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| 25 | return ! (stat ("conftest.data", &s) == 0
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| 26 | && utimes ("conftest.data", 0) == 0
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| 27 | && stat ("conftest.data", &t) == 0
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| 28 | && t.st_mtime >= s.st_mtime
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| 29 | && t.st_mtime - s.st_mtime < 120));
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| 30 | }],
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| 31 | ac_cv_func_utimes_null=yes,
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| 32 | ac_cv_func_utimes_null=no,
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| 33 | ac_cv_func_utimes_null=no)
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| 34 | rm -f core core.* *.core])
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| 35 |
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| 36 | if test $ac_cv_func_utimes_null = yes; then
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| 37 | AC_DEFINE(HAVE_UTIMES_NULL, 1,
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| 38 | [Define if utimes accepts a null argument])
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| 39 | fi
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| 40 | ]
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| 41 | )
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