Problems with jpeglib

[DotNetter]

fellows, hi again

I'm having problems with the jpeglib. When I compile the program, the compiler shows these errors. What's the matter.Thanks.
My compiler is the Dev C++ 4.9.9.2:

  [Linker error] undefined reference to `jpeg_std_error(jpeg_error_mgr*)' 
  [Linker error] undefined reference to `jpeg_CreateCompress(jpeg_compress_struct*, int, unsigned int)' 
  [Linker error] undefined reference to `jpeg_stdio_dest(jpeg_compress_struct*, _iobuf*)' 
  [Linker error] undefined reference to `jpeg_set_defaults(jpeg_compress_struct*)' 
  [Linker error] undefined reference to `jpeg_set_quality(jpeg_compress_struct*, int, bool)' 
  [Linker error] undefined reference to `jpeg_start_compress(jpeg_compress_struct*, bool)' 
  [Linker error] undefined reference to `jpeg_write_scanlines(jpeg_compress_struct*, unsigned char**, unsigned int)' 
  [Linker error] undefined reference to `jpeg_finish_compress(jpeg_compress_struct*)' 
  [Linker error] undefined reference to `jpeg_destroy_compress(jpeg_compress_struct*)' 
  [Linker error] undefined reference to `jpeg_std_error(jpeg_error_mgr*)' 
  [Linker error] undefined reference to `jpeg_CreateDecompress(jpeg_decompress_struct*, int, unsigned int)' 
  [Linker error] undefined reference to `jpeg_stdio_src(jpeg_decompress_struct*, _iobuf*)' 
  [Linker error] undefined reference to `jpeg_read_header(jpeg_decompress_struct*, bool)' 
  [Linker error] undefined reference to `jpeg_start_decompress(jpeg_decompress_struct*)' 
  [Linker error] undefined reference to `jpeg_read_scanlines(jpeg_decompress_struct*, unsigned char**, unsigned int)' 
  [Linker error] undefined reference to `jpeg_finish_decompress(jpeg_decompress_struct*)' 
  [Linker error] undefined reference to `jpeg_destroy_decompress(jpeg_decompress_struct*)' 
  [Linker error] undefined reference to `jpeg_std_error(jpeg_error_mgr*)' 
  [Linker error] undefined reference to `jpeg_CreateDecompress(jpeg_decompress_struct*, int, unsigned int)' 
  [Linker error] undefined reference to `jpeg_stdio_src(jpeg_decompress_struct*, _iobuf*)' 
  [Linker error] undefined reference to `jpeg_read_header(jpeg_decompress_struct*, bool)' 
  [Linker error] undefined reference to `jpeg_start_decompress(jpeg_decompress_struct*)' 
  [Linker error] undefined reference to `jpeg_read_scanlines(jpeg_decompress_struct*, unsigned char**, unsigned int)' 
  [Linker error] undefined reference to `jpeg_finish_decompress(jpeg_decompress_struct*)' 
  [Linker error] undefined reference to `jpeg_destroy_decompress(jpeg_decompress_struct*)' 
  ld returned 1 exit status