dnl Time zone functions: tzalloc, localtime_rz, etc.

dnl Copyright (C) 2015-2017 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

dnl Written by Paul Eggert.

AC_DEFUN([gl_TIME_RZ],

[

  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])

  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])

  AC_REQUIRE([AC_STRUCT_TIMEZONE])

  AC_CHECK_TYPES([timezone_t], [], [], [[#include <time.h>]])

  if test "$ac_cv_type_timezone_t" = yes; then

    HAVE_TIMEZONE_T=1

  fi

])