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(), AX_LIBEVENT2_EVHTTP()
   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_PREREQ([2.63])dnl
  25     AC_CACHE_CHECK([test for a working libevent], [ax_cv_libevent], [
  26       AX_SAVE_FLAGS
  27       LIBS="-levent $LIBS"
  28       AC_LANG_PUSH([C])
  29       AC_RUN_IFELSE([
  30         AC_LANG_PROGRAM([
  31 #include <sys/types.h>
  32 #include <sys/time.h>
  33 #include <stdlib.h>
  34 #include <event.h>
  35           ], [
  36           struct event_base *tmp_event= event_init();
  37           event_base_free(tmp_event);
  38           ])],
  39         [ax_cv_libevent=yes],
  40         [ax_cv_libevent=no],
  41         [AC_MSG_WARN([test program execution failed])])
  42       AC_LANG_POP
  43       AX_RESTORE_FLAGS
  44       ])
  45
  46     AS_IF([test "x$ax_cv_libevent" = "xyes"],[
  47         LIBEVENT_LDFLAGS="-levent"
  48         AC_SUBST(LIBEVENT_LDFLAGS)
  49         AC_DEFINE([HAVE_LIBEVENT],[1],[Define if event_init is present in event.h.])],[
  50         AC_DEFINE([HAVE_LIBEVENT],[0],[Define if event_init is present in event.h.])
  51         ])
  52
  53     AM_CONDITIONAL(HAVE_LIBEVENT, test "x$ax_cv_libevent" = "xyes")
  54     ])
  55
  56   AC_DEFUN([AX_LIBEVENT2],[
  57       AC_REQUIRE([AX_LIBEVENT])
  58       AC_CACHE_CHECK([test for a working libevent version 2], [ax_cv_libevent2], [
  59         AX_SAVE_FLAGS
  60         LIBS="-levent $LIBS"
  61         AC_LANG_PUSH([C])
  62         AC_RUN_IFELSE([
  63           AC_LANG_PROGRAM([
  64 #include <sys/types.h>
  65 #include <sys/time.h>
  66 #include <stdlib.h>
  67 #include <event2/event.h>
  68             ],[
  69             struct event_base *tmp_event= event_init();
  70             event_base_free(tmp_event);
  71             ])],
  72           [ax_cv_libevent2=yes],
  73           [ax_cv_libevent2=no],
  74           [AC_MSG_WARN([test program execution failed])])
  75         AC_LANG_POP
  76         AX_RESTORE_FLAGS
  77         ])
  78
  79       AS_IF([test "x$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
  89   AC_DEFUN([AX_LIBEVENT2_EVHTTP],[
  90       AC_REQUIRE([AX_LIBEVENT2])
  91       AC_CACHE_CHECK([test for a working libevent2 evhttp interface], [ax_cv_libevent2_evhttp], [
  92         AX_SAVE_FLAGS
  93         LIBS="-levent $LIBS"
  94         AC_LANG_PUSH([C])
  95         AC_RUN_IFELSE([
  96           AC_LANG_PROGRAM([
  97 #include <sys/types.h>
  98 #include <sys/time.h>
  99 #include <stdlib.h>
 100 #include <event2/event.h>
 101 #include <event2/http.h>
 102             ],[
 103             struct event_base *libbase= event_base_new();
 104             struct evhttp *libsrvr= evhttp_new(libbase);
 105             ])],
 106           [ax_cv_libevent2_evhttp=yes],
 107           [ax_cv_libevent2_evhttp=no],
 108           [AC_MSG_WARN([test program execution failed])])
 109         AC_LANG_POP
 110         AX_RESTORE_FLAGS
 111         ])
 112
 113       AS_IF([test "x$ax_cv_libevent2_evhttp" = "xyes"],[
 114         LIBEVENT2_LDFLAGS="-levent"
 115         AC_SUBST(LIBEVENT2_LDFLAGS)
 116         AC_DEFINE([HAVE_LIBEVENT2],[1],[Define if event_init is present in event2/event.h.])],[
 117         AC_DEFINE([HAVE_LIBEVENT2],[0],[Define if event_init is present in event2/event.h.])
 118         ])
 119
 120       AM_CONDITIONAL(HAVE_LIBEVENT2_EVHTTP, test "x$ax_cv_libevent2_evhttp" = "xyes")
 121       ])