undefined symbol mit ALSA

/*
/*
 * test.c: A plugin for the Video Disk Recorder
 *
 * See the README file for copyright information and how to reach the author.
 *
 * $Id$
 */


#include <vdr/plugin.h>
#include <alsa/asoundlib.h>






static const char *VERSION        = "0.0.1";
static const char *DESCRIPTION    = "Enter description for 'test' plugin";
static const char *MAINMENUENTRY  = "Test";


class cPluginTest : public cPlugin {
private:
  // Add any member variables or functions you may need here.
public:
  cPluginTest(void);
  virtual ~cPluginTest();
  virtual const char *Version(void) { return VERSION; }
  virtual const char *Description(void) { return DESCRIPTION; }
  virtual const char *CommandLineHelp(void);
  virtual bool ProcessArgs(int argc, char *argv[]);
  virtual bool Initialize(void);
  virtual bool Start(void);
  virtual void Stop(void);
  virtual void Housekeeping(void);
  virtual const char *MainMenuEntry(void) { return MAINMENUENTRY; }
  virtual cOsdObject *MainMenuAction(void);
  virtual cMenuSetupPage *SetupMenu(void);
  virtual bool SetupParse(const char *Name, const char *Value);
  };


cPluginTest::cPluginTest(void)
{
  // Initialize any member variables here.
  // DON'T DO ANYTHING ELSE THAT MAY HAVE SIDE EFFECTS, REQUIRE GLOBAL
  // VDR OBJECTS TO EXIST OR PRODUCE ANY OUTPUT!
}


cPluginTest::~cPluginTest()
{
  // Clean up after yourself!
}


const char *cPluginTest::CommandLineHelp(void)
{
  // Return a string that describes all known command line options.
  return NULL;
}


bool cPluginTest::ProcessArgs(int argc, char *argv[])
{
  // Implement command line argument processing here if applicable.
  return true;
}


bool cPluginTest::Initialize(void)
{
  // Initialize any background activities the plugin shall perform.
  return true;
}


bool cPluginTest::Start(void)
{
  // Start any background activities the plugin shall perform.
  snd_pcm_hw_params_t *hwparams;
  snd_pcm_hw_params_alloca(&hwparams);


  return true;
}


void cPluginTest::Stop(void)
{
  // Stop any background activities the plugin shall perform.
}


void cPluginTest::Housekeeping(void)
{
  // Perform any cleanup or other regular tasks.
}


cOsdObject *cPluginTest::MainMenuAction(void)
{
  // Perform the action when selected from the main VDR menu.
  return NULL;
}


cMenuSetupPage *cPluginTest::SetupMenu(void)
{
  // Return a setup menu in case the plugin supports one.
  return NULL;
}


bool cPluginTest::SetupParse(const char *Name, const char *Value)
{
  // Parse your own setup parameters and store their values.
  return false;
}


VDRPLUGINCREATOR(cPluginTest); // Don't touch this!