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emacs/m4/utimbuf.m4

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# serial 9
# Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2014 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 Jim Meyering
dnl Define HAVE_STRUCT_UTIMBUF if 'struct utimbuf' is declared --
dnl usually in <utime.h>.
dnl Some systems have utime.h but don't declare the struct anywhere.
AC_DEFUN([gl_CHECK_TYPE_STRUCT_UTIMBUF],
[
AC_CHECK_HEADERS_ONCE([sys/time.h utime.h])
AC_CACHE_CHECK([for struct utimbuf], [gl_cv_sys_struct_utimbuf],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <time.h>
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
]],
[[static struct utimbuf x; x.actime = x.modtime;]])],
[gl_cv_sys_struct_utimbuf=yes],
[gl_cv_sys_struct_utimbuf=no])])
if test $gl_cv_sys_struct_utimbuf = yes; then
AC_DEFINE([HAVE_STRUCT_UTIMBUF], [1],
[Define if struct utimbuf is declared -- usually in <utime.h>.
Some systems have utime.h but don't declare the struct anywhere. ])
fi
])