git.m6w6.name Git - awesomized/libmemcached/blob - m4/uuid.m4

   1 # ===========================================================================
   2 # http://
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_UUID
   8 #   AX_UUID_GENERATE_TIME_SAFE
   9 #
  10 # DESCRIPTION
  11 #
  12 #   Check for uuid, and uuid_generate_time_safe support.
  13 #
  14 # LICENSE
  15 #
  16 #   Copyright (c) 2012 Brian Aker <brian@tangent.org>
  17 #
  18 #   Copying and distribution of this file, with or without modification, are
  19 #   permitted in any medium without royalty provided the copyright notice
  20 #   and this notice are preserved. This file is offered as-is, without any
  21 #   warranty.
  22
  23 #serial 3
  24
  25 AC_DEFUN([AX_UUID], [
  26          AC_CHECK_HEADER([uuid/uuid.h], [
  27                          AC_CACHE_CHECK([check to see if we need -luuid], [ax_cv_libuuid_is_required], [
  28                                         save_LDFLAGS="$LDFLAGS"
  29                                         LDFLAGS="-luuid"
  30                                         AC_LANG_PUSH([C])
  31                                         AC_LINK_IFELSE([
  32                                                        AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  33                                                                        uuid_t out;
  34                                                                        uuid_generate(out);
  35                                                                        ])],
  36                                                        [ax_cv_libuuid_is_required=yes],
  37                                                        [])
  38                                         AC_LANG_POP
  39                                         LDFLAGS="$save_LDFLAGS"
  40                                         ])
  41                          AS_IF([test x"ax_cv_libuuid_is_required" = xyes], [
  42                                LIBUUID_LDFLAGS="-luuid"
  43                                UUID_UUID_H=yes
  44                                ],[
  45                                AC_CACHE_CHECK([check to see if -luuid is not needed], [ax_cv_libuuid_is_not_required], [
  46                                               AC_LANG_PUSH([C])
  47                                               AC_COMPILE_IFELSE([
  48                                                                 AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  49                                                                                 uuid_t out;
  50                                                                                 uuid_generate(out);
  51                                                                                 ])],
  52                                                                 [ax_cv_libuuid_is_not_required=yes],
  53                                                                 [ax_cv_libuuid_is_not_required=no])
  54                                               AC_LANG_POP
  55                                               ])
  56                                AS_IF([test x"ax_cv_libuuid_is_not_required" = xyes], [UUID_UUID_H=yes], [UUID_UUID_H=])
  57                                ])
  58                          ], [UUID_UUID_H=])
  59
  60 AS_IF([test x"$UUID_UUID_H" = xyes], [
  61       AC_DEFINE([HAVE_UUID_UUID_H], [ 1 ], [Have uuid/uuid.h])
  62       ],[
  63       AC_DEFINE([HAVE_UUID_UUID_H], [ 0 ], [Have uuid/uuid.h])
  64       ])
  65 ])
  66
  67 AC_DEFUN([AX_UUID_GENERATE_TIME_SAFE], [
  68   AC_REQUIRE([AX_UUID])
  69   AC_CACHE_CHECK([for uuid_generate_time_safe], [ax_cv_uuid_generate_time_safe], [
  70         save_LDFLAGS="$LDFLAGS"
  71         LDFLAGS=$LIBUUID_LDFLAGS
  72         AC_LANG_PUSH([C])
  73         AC_LINK_IFELSE([
  74             AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  75                             uuid_t out;
  76                             uuid_generate_time_safe(out);
  77                             ])],
  78             [ax_cv_uuid_generate_time_safe=yes],
  79             [ax_cv_uuid_generate_time_safe=no])
  80           AC_LANG_POP
  81           LDFLAGS="$save_LDFLAGS"
  82           ])
  83
  84   AS_IF([test "$ax_cv_uuid_generate_time_safe" = yes],[
  85     AC_DEFINE(HAVE_UUID_GENERATE_TIME_SAFE,[1],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])],[
  86     AC_DEFINE(HAVE_UUID_GENERATE_TIME_SAFE,[0],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])
  87   ])
  88 ])