大家帮忙,给我看看这个错误
Jpegfile.obj : error LNK2001: unresolved external symbol "unsigned char __cdecl jpeg_finish_decompress(struct jpeg_decompress_struct *)" (?jpeg_finish_decompress@@YAEPAUjpeg_decompress_struct@@@Z)
Jpegfile.obj : error LNK2001: unresolved external symbol "unsigned int __cdecl jpeg_read_scanlines(struct jpeg_decompress_struct *,unsigned char * *,unsigned int)" (?jpeg_read_scanlines@@YAIPAUjpeg_decompress_struct@@PAPAEI@Z)
Jpegfile.obj : error LNK2001: unresolved external symbol "unsigned char __cdecl jpeg_start_decompress(struct jpeg_decompress_struct *)" (?jpeg_start_decompress@@YAEPAUjpeg_decompress_struct@@@Z)
Jpegfile.obj : error LNK2001: unresolved external symbol "int __cdecl jpeg_read_header(struct jpeg_decompress_struct *,unsigned char)" (?jpeg_read_header@@YAHPAUjpeg_decompress_struct@@E@Z)
Jpegfile.obj : error LNK2001: unresolved external symbol "void __cdecl jpeg_stdio_src(struct jpeg_decompress_struct *,struct _iobuf *)" (?jpeg_stdio_src@@YAXPAUjpeg_decompress_struct@@PAU_iobuf@@@Z)
Jpegfile.obj : error LNK2001: unresolved external symbol "void __cdecl jpeg_CreateDecompress(struct jpeg_decompress_struct *,int,unsigned int)" (?jpeg_CreateDecompress@@YAXPAUjpeg_decompress_struct@@HI@Z)