code.delx.au - gnu-emacs/blob - m4/time_rz.m4

   1 dnl Time zone functions: tzalloc, localtime_rz, etc.
   2
   3 dnl Copyright (C) 2015-2016 Free Software Foundation, Inc.
   4 dnl This file is free software; the Free Software Foundation
   5 dnl gives unlimited permission to copy and/or distribute it,
   6 dnl with or without modifications, as long as this notice is preserved.
   7
   8 dnl Written by Paul Eggert.
   9
  10 AC_DEFUN([gl_TIME_RZ],
  11 [
  12   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  13   AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
  14   AC_REQUIRE([AC_STRUCT_TIMEZONE])
  15   AC_CHECK_FUNCS_ONCE([tzset])
  16
  17   AC_CHECK_TYPES([timezone_t], [], [], [[#include <time.h>]])
  18   if test "$ac_cv_type_timezone_t" = yes; then
  19     HAVE_TIMEZONE_T=1
  20   fi
  21 ])