kc3-lang/gnulib/m4/utimes-null.m4

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• Hash : f2b62ff7
  Author :
  Date : 2006-04-24T07:35:24
  

  * fsusage.m4 (gl_FILE_SYSTEM_USAGE): Use return, not exit.
  Don't assume that exit status -1 is valid.
  * nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
  * putenv.m4 (gl_FUNC_PUTENV): Likewise.
  * rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Likewise.
  * readdir.m4 (GL_FUNC_READDIR): Include <stdlib.h>.
  * rename.m4 (vb_FUNC_RENAME): Likewise.
  * unlink-busy.m4 (gl_FUNC_UNLINK_BUSY_TEXT): Use AC_RUN_IFELSE,
  not AC_TRY_RUN.  Use return, not exit.  Don't assume that
  functions can be used without declaring them, or that you can
  exit with status -1.
  * utimes-null.m4 (gl_FUNC_UTIMES_NULL): Likewise.
  

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• m4/utimes-null.m4

• #serial 7
  
  # Copyright (C) 1998, 1999, 2001, 2003, 2004, 2006 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 Shamelessly cloned from acspecific.m4's AC_FUNC_UTIME_NULL,
  dnl then do case-insensitive s/utime/utimes/.
  
  AC_DEFUN([gl_FUNC_UTIMES_NULL],
  [AC_CACHE_CHECK(whether utimes accepts a null argument, ac_cv_func_utimes_null,
  [rm -f conftest.data; > conftest.data
  AC_TRY_RUN([
  /* In case stat has been defined to rpl_stat, undef it here.  */
  #undef stat
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <sys/time.h>
  int
  main () {
  struct stat s, t;
  return ! (stat ("conftest.data", &s) == 0
  	  && utimes ("conftest.data", 0) == 0
  	  && stat ("conftest.data", &t) == 0
  	  && t.st_mtime >= s.st_mtime
  	  && t.st_mtime - s.st_mtime < 120));
  }],
    ac_cv_func_utimes_null=yes,
    ac_cv_func_utimes_null=no,
    ac_cv_func_utimes_null=no)
  rm -f core core.* *.core])
  
      if test $ac_cv_func_utimes_null = yes; then
        AC_DEFINE(HAVE_UTIMES_NULL, 1,
  		[Define if utimes accepts a null argument])
      fi
    ]
  )
  

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