git.m6w6.name Git - m6w6/libmemcached/blob - m4/ax_libevent.m4

   1 # https://github.com/BrianAker/ddm4
   2 # ===========================================================================
   3 #
   4 # SYNOPSIS
   5 #
   6 #   AX_LIBEVENT(), AX_LIBEVENT2()
   7 #
   8 # DESCRIPTION
   9 #
  10 #   libevent library
  11 #
  12 # LICENSE
  13 #
  14 #   Copyright (c) 2012 Brian Aker <brian@tangent.org>
  15 #
  16 #   Copying and distribution of this file, with or without modification, are
  17 #   permitted in any medium without royalty provided the copyright notice
  18 #   and this notice are preserved. This file is offered as-is, without any
  19 #   warranty.
  20
  21 #serial 2
  22
  23   AC_DEFUN([AX_LIBEVENT],[
  24       AC_CACHE_CHECK([test for a working libevent], [ax_cv_libevent], [
  25         AX_SAVE_FLAGS
  26         LIBS="-levent $LIBS"
  27         AC_LANG_PUSH([C])
  28         AC_RUN_IFELSE([
  29           AC_LANG_PROGRAM([
  30 #include <sys/types.h>
  31 #include <sys/time.h>
  32 #include <stdlib.h>
  33 #include <event.h>
  34             ], [
  35             struct event_base *tmp_event= event_init();
  36             event_base_free(tmp_event);
  37             ])],
  38           [ax_cv_libevent=yes],
  39           [ax_cv_libevent=no],
  40           [AC_MSG_WARN([test program execution failed])])
  41         AC_LANG_POP
  42         AX_RESTORE_FLAGS
  43         ])
  44
  45       AS_IF([test "x$ax_cv_libevent" = "xyes"],[
  46         LIBEVENT_LDFLAGS="-levent"
  47         AC_SUBST(LIBEVENT_LDFLAGS)
  48         AC_DEFINE([HAVE_LIBEVENT],[1],[Define if event_init is present in event.h.])],[
  49         AC_DEFINE([HAVE_LIBEVENT],[0],[Define if event_init is present in event.h.])
  50         ])
  51
  52       AM_CONDITIONAL(HAVE_LIBEVENT, test "x$ax_cv_libevent" = "xyes")
  53       ])
  54
  55   AC_DEFUN([AX_LIBEVENT2],[
  56       AC_REQUIRE([AX_LIBEVENT])
  57       AC_CACHE_CHECK([test for a working libevent version 2], [ax_cv_libevent2], [
  58         AX_SAVE_FLAGS
  59         LIBS="-levent $LIBS"
  60         AC_LANG_PUSH([C])
  61         AC_RUN_IFELSE([
  62           AC_LANG_PROGRAM([
  63 #include <sys/types.h>
  64 #include <sys/time.h>
  65 #include <stdlib.h>
  66 #include <event2/event.h>
  67 #include <event2/http.h>
  68             ], [
  69             struct event_base *tmp_event= event_init();
  70             event_base_free(tmp_event);
  71             ])],
  72           [ax_cv_libevent2=yes],
  73           [ax_cv_libevent2=no],
  74           [AC_MSG_WARN([test program execution failed])])
  75         AC_LANG_POP
  76         AX_RESTORE_FLAGS
  77         ])
  78
  79       AS_IF([test "x$ax_cv_libevent2" = "xyes"],[
  80         LIBEVENT2_LDFLAGS="-levent"
  81         AC_SUBST(LIBEVENT2_LDFLAGS)
  82         AC_DEFINE([HAVE_LIBEVENT2],[1],[Define if event_init is present in event2/event.h.])],[
  83         AC_DEFINE([HAVE_LIBEVENT2],[0],[Define if event_init is present in event2/event.h.])
  84         ])
  85
  86       AM_CONDITIONAL(HAVE_LIBEVENT2, test "x$ax_cv_libevent2" = "xyes")
  87       ])
  88