Problem of "undefined symbol"

[little boy]

Hi,I am trying to write my own plugin,when I was installed my plugin,I find a
problem:

(gst-plugin-scanner:17505): GStreamer-WARNING **: Failed to load plugin
'/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so':
/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so: undefined symbol:
gst_jpgsrc_smpte

And I running "ldd -r /usr/local/lib/gstreamer-1.0/libgstjpgsrc.so":

linux-vdso.so.1 =>  (0x00007ffe68bb3000)
	libgstbase-1.0.so.0 => /usr/local/lib/libgstbase-1.0.so.0
(0x00007effa9fdf000)
	libgstreamer-1.0.so.0 => /usr/local/lib/libgstreamer-1.0.so.0
(0x00007effa9cc4000)
	libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
(0x00007effa9a73000)
	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0
(0x00007effa976b000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007effa954d000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007effa9188000)
	libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0
(0x00007effa8f84000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007effa8c7e000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007effa8a76000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007effa8872000)
	libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007effa866a000)
	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007effa842c000)
	/lib64/ld-linux-x86-64.so.2 (0x00007effaa441000)
undefined symbol: gst_jpgsrc_smpte
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_frame_map
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_chroma_resample_get_info
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_colorimetry_from_string
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_frame_unmap
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_format_get_info
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_chroma_resample_new
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_chroma_resample_free
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_info_from_caps
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_format_get_palette
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)
undefined symbol: gst_video_info_init
(/usr/local/lib/gstreamer-1.0/libgstjpgsrc.so)

Can anyone please help ... 

Thanks,
little boy 



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