git.m6w6.name Git - m6w6/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 -luuid is not needed], [ax_cv_libuuid_is_required], [
  28         AC_LANG_PUSH([C])
  29         AC_RUN_IFELSE([
  30           AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  31             uuid_t out;
  32             uuid_generate(out);
  33             ])],
  34           [ax_cv_libuuid_is_required=no],
  35           [ax_cv_libuuid_is_required=maybe],
  36           [AC_MSG_WARN([test program execution failed])])
  37         AC_LANG_POP
  38         ])
  39
  40       AS_IF([test "$ax_cv_libuuid_is_required" = maybe], [
  41         AC_CACHE_CHECK([check to see if -luuid is needed], [ax_cv_libuuid_works], [
  42           save_LIBS="$LIBS"
  43           LIBS="-luuid $LIBS"
  44           AC_LANG_PUSH([C])
  45           AC_RUN_IFELSE([
  46             AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  47               uuid_t out;
  48               uuid_generate(out);
  49               ])],
  50             [ax_cv_libuuid_works=yes],
  51             [ax_cv_libuuid_works=no],
  52             [AC_MSG_WARN([test program execution failed])])
  53           AC_LANG_POP
  54           LIBS="$save_LIBS"
  55           ])
  56         AS_IF([test "$ax_cv_libuuid_works" = yes], [
  57           AC_SUBST([LIBUUID_LDFLAGS],[-luuid])])
  58         ])
  59
  60       AS_IF([test "$ax_cv_libuuid_is_required" = no], [UUID_UUID_H=yes])
  61       AS_IF([test "$ax_cv_libuuid_works" = yes], [UUID_UUID_H=yes])
  62       ])
  63
  64   AS_IF([test "$UUID_UUID_H" = yes], [
  65       AC_DEFINE([HAVE_UUID_UUID_H], [1], [Have uuid/uuid.h])
  66       ],[
  67       AC_DEFINE([HAVE_UUID_UUID_H], [0], [Have uuid/uuid.h])
  68       ])
  69   ])
  70
  71   AC_DEFUN([AX_UUID_GENERATE_TIME_SAFE], [
  72       AC_REQUIRE([AX_UUID])
  73       AC_CACHE_CHECK([for uuid_generate_time_safe], [ax_cv_uuid_generate_time_safe], [
  74         save_LIBS="$LIBS"
  75         LIBS="$LIBUUID_LDFLAGS $LIBS"
  76         AC_LANG_PUSH([C])
  77         AC_RUN_IFELSE([
  78           AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  79             uuid_t out;
  80             uuid_generate_time_safe(out);
  81             ])],
  82           [ax_cv_uuid_generate_time_safe=yes],
  83           [ax_cv_uuid_generate_time_safe=no],
  84           [AC_MSG_WARN([test program execution failed])])
  85         AC_LANG_POP
  86         LIBS="$save_LIBS"
  87         ])
  88
  89       AS_IF([test "$ax_cv_uuid_generate_time_safe" = yes],[
  90         AC_DEFINE(HAVE_UUID_GENERATE_TIME_SAFE,[1],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])],[
  91         AC_DEFINE(HAVE_UUID_GENERATE_TIME_SAFE,[0],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])
  92         ])
  93       ])