m4/readutmp.m4

   1 # readutmp.m4 serial 20
   2 dnl Copyright (C) 2002-2020 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_READUTMP],
   8 [
   9   dnl Persuade utmpx.h to declare utmpxname
  10   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
  11
  12   AC_CHECK_HEADERS_ONCE([utmp.h utmpx.h])
  13   if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
  14     dnl Prerequisites of lib/readutmp.h and lib/readutmp.c.
  15     AC_CHECK_FUNCS_ONCE([utmpname utmpxname])
  16     AC_CHECK_DECLS([getutent],,,[[
  17 /* <sys/types.h> is a prerequisite of <utmp.h> on FreeBSD 8.0, OpenBSD 4.6.  */
  18 #include <sys/types.h>
  19 #ifdef HAVE_UTMP_H
  20 # include <utmp.h>
  21 #endif
  22 ]])
  23     utmp_includes="\
  24 AC_INCLUDES_DEFAULT
  25 #ifdef HAVE_UTMPX_H
  26 # include <utmpx.h>
  27 #endif
  28 #ifdef HAVE_UTMP_H
  29 # if defined _THREAD_SAFE && defined UTMP_DATA_INIT
  30    /* When including both utmp.h and utmpx.h on AIX 4.3, with _THREAD_SAFE
  31       defined, work around the duplicate struct utmp_data declaration.  */
  32 #  define utmp_data gl_aix_4_3_workaround_utmp_data
  33 # endif
  34 # include <utmp.h>
  35 #endif
  36 "
  37     AC_CHECK_MEMBERS([struct utmpx.ut_user],,,[$utmp_includes])
  38     AC_CHECK_MEMBERS([struct utmp.ut_user],,,[$utmp_includes])
  39     AC_CHECK_MEMBERS([struct utmpx.ut_name],,,[$utmp_includes])
  40     AC_CHECK_MEMBERS([struct utmp.ut_name],,,[$utmp_includes])
  41     AC_CHECK_MEMBERS([struct utmpx.ut_type],,,[$utmp_includes])
  42     AC_CHECK_MEMBERS([struct utmp.ut_type],,,[$utmp_includes])
  43     AC_CHECK_MEMBERS([struct utmpx.ut_pid],,,[$utmp_includes])
  44     AC_CHECK_MEMBERS([struct utmp.ut_pid],,,[$utmp_includes])
  45     AC_CHECK_MEMBERS([struct utmpx.ut_id],,,[$utmp_includes])
  46     AC_CHECK_MEMBERS([struct utmp.ut_id],,,[$utmp_includes])
  47     AC_CHECK_MEMBERS([struct utmpx.ut_exit],,,[$utmp_includes])
  48     AC_CHECK_MEMBERS([struct utmp.ut_exit],,,[$utmp_includes])
  49
  50     AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_exit],,,[$utmp_includes])
  51     AC_CHECK_MEMBERS([struct utmp.ut_exit.ut_exit],,,[$utmp_includes])
  52     AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_exit],,,[$utmp_includes])
  53     AC_CHECK_MEMBERS([struct utmp.ut_exit.e_exit],,,[$utmp_includes])
  54
  55     AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_termination],,,[$utmp_includes])
  56     AC_CHECK_MEMBERS([struct utmp.ut_exit.ut_termination],,,[$utmp_includes])
  57     AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_termination],,,[$utmp_includes])
  58     AC_CHECK_MEMBERS([struct utmp.ut_exit.e_termination],,,[$utmp_includes])
  59   fi
  60 ])