无法编译基于GstPlugin生成的样板

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../tools/make_element HelloWorld

helloworld_sources = [
  'src/gsthelloworld.c'
gsthelloworld = library('gsthelloworld',
  helloworld_sources,
  c_args: plugin_c_args,
  dependencies : [gst_dep],
  install : true,
  install_dir : plugins_install_dir,
)

gst-template/build/../gst-plugin/src/gsthelloworld.c:184: undefined reference to `GST_HELLOWORLD'
**there are multiple lines of the same errors happen at different part of the source file.

#define GST_MY_FILTER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MY_FILTER,GstMyFilter))

#define GST_TYPE_HELLOWORLD (gst_my_filter_get_type())
G_DECLARE_FINAL_TYPE (GstHelloWorld, gst_hello_world,
    GST, PLUGIN_TEMPLATE, GstElement)
// You need to add this one below in your gsthelloworld.h
#define GST_HELLOWORLD(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_HELLOWORLD,GstHelloWorld))

    #define GST_TYPE_HELLOWORLD (gst_my_filter_get_type())
G_DECLARE_FINAL_TYPE (GstHelloWorld, gst_hello_world,
    GST, PLUGIN_TEMPLATE, GstElement)

#ifndef __GST_MYFILTER_H__
#define __GST_MYFILTER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_MYFILTER \
  (gst_my_filter_get_type())
#define GST_MYFILTER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MYFILTER,GstMyFilter))
#define GST_MYFILTER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MYFILTER,GstMyFilterClass))
#define GST_IS_MYFILTER(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MYFILTER))
#define GST_IS_MYFILTER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MYFILTER))
typedef struct _GstMyFilter      GstMyFilter;
typedef struct _GstMyFilterClass GstMyFilterClass;
struct _GstMyFilter
  GstElement element;
  GstPad *sinkpad, *srcpad;
  gboolean silent;
struct _GstMyFilterClass 
  GstElementClass parent_class;

无法编译基于GstPlugin生成的样板 内容来源于 Stack Overflow，遵循 CC BY-SA 4.0 许可协议进行翻译与使用。IT领域专用引擎提供翻译支持 腾讯云小微IT领域专用引擎提供翻译支持

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