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

   1 # vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2 # ===========================================================================
   3 # https://github.com/BrianAker/ddm4
   4 # ===========================================================================
   5 #
   6 # SYNOPSIS
   7 #
   8 #   AX_UUID()
   9 #   AX_UUID_GENERATE_TIME_SAFE()
  10 #
  11 # DESCRIPTION
  12 #
  13 #   Check for uuid, and uuid_generate_time_safe support.
  14 #
  15 # LICENSE
  16 #
  17 #   Copyright (c) 2012 Brian Aker <brian@tangent.org>
  18 #
  19 #   Copying and distribution of this file, with or without modification, are
  20 #   permitted in any medium without royalty provided the copyright notice
  21 #   and this notice are preserved. This file is offered as-is, without any
  22 #   warranty.
  23
  24 #serial 6
  25
  26 AC_DEFUN([AX_UUID],
  27     [AC_PREREQ([2.63])dnl
  28     AC_CHECK_HEADER([uuid/uuid.h],[
  29
  30       AC_CACHE_CHECK([check to see if -luuid is needed], [ax_cv_libuuid_is_required],
  31         [AC_LANG_PUSH([C])
  32         AC_RUN_IFELSE(
  33           [AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  34             uuid_t out;
  35             uuid_generate(out);
  36             ])],
  37           [ax_cv_libuuid_is_required=no],
  38           [ax_cv_libuuid_is_required=yes],
  39           [AC_MSG_WARN([test program execution failed])])
  40         AC_LANG_POP
  41         ])
  42
  43       AS_IF([test "$ax_cv_libuuid_is_required" = yes],
  44         [AC_CACHE_CHECK([check to see if -luuid is needed], [ax_cv_libuuid_works],
  45           [AX_SAVE_FLAGS
  46           LIBS="-luuid $LIBS"
  47           AC_LANG_PUSH([C])
  48           AC_RUN_IFELSE(
  49             [AC_LANG_PROGRAM([#include <uuid/uuid.h>], [
  50               uuid_t out;
  51               uuid_generate(out);
  52               ])],
  53             [ax_cv_libuuid_works=yes],
  54             [ax_cv_libuuid_works=no],
  55             [AC_MSG_WARN([test program execution failed])])
  56           AC_LANG_POP
  57           AX_RESTORE_FLAGS])
  58         ])
  59
  60       AS_IF([test "$ax_cv_libuuid_is_required" = yes],
  61           [AS_IF([test "$ax_cv_libuuid_works" = yes],[ax_libuuid=yes])],
  62           [ax_libuuid=yes])
  63       ],[ax_libuuid=no])
  64
  65       AS_IF([test "x$ax_libuuid" = xyes],
  66           [AC_DEFINE([HAVE_UUID_UUID_H],[1],[Have uuid/uuid.h])
  67           AS_IF([test "x$ax_cv_libuuid_is_required" = xyes],[ LIBUUID_LIB='-luuid' ])],
  68           [AC_DEFINE([HAVE_UUID_UUID_H],[0],[Have uuid/uuid.h])
  69           ])
  70
  71   AC_SUBST([LIBUUID_LIB])
  72   AM_CONDITIONAL([HAVE_LIBUUID],[test "x$ax_libuuid" = xyes])
  73   ])
  74
  75   AC_DEFUN([AX_UUID_GENERATE_TIME_SAFE],
  76       [AC_PREREQ([2.63])dnl
  77       AC_REQUIRE([AX_UUID])dnl
  78       AC_CACHE_CHECK([for uuid_generate_time_safe],
  79         [ax_cv_uuid_generate_time_safe],
  80         [AX_SAVE_FLAGS
  81         LIBS="$LIBUUID_LIB $LIBS"
  82         AC_LANG_PUSH([C])
  83         AC_RUN_IFELSE([
  84           AC_LANG_PROGRAM([#include <uuid/uuid.h>],[
  85             uuid_t out;
  86             uuid_generate_time_safe(out);
  87             ])],
  88           [ax_cv_uuid_generate_time_safe=yes],
  89           [ax_cv_uuid_generate_time_safe=no],
  90           [AC_MSG_WARN([test program execution failed])])
  91         AC_LANG_POP
  92         AX_RESTORE_FLAGS
  93         ])
  94
  95       AS_IF([test "$ax_cv_uuid_generate_time_safe" = yes],
  96         [AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE],[1],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])],
  97         [AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE],[0],[Define if uuid_generate_time_safe is present in uuid/uuid.h.])])
  98       ])