[求助]用IP核实出现的问题，求大虾帮忙！！ 大虾, 求助, 帮忙

wangrm

用IP core Generator 生成了一个512点fft核，可在使用时老是通不过，出现这样的错误，不知该怎么解决呢？？

Started : "Create Schematic Symbol".
Compiling vhdl file
"F:/RecentWorks/Xfft_useIP/fft_system/fft_system/../FFTcore/FFTcore.vhd" in
Library work.
ERROR:HDLParsers:3014 -
"F:/RecentWorks/Xfft_useIP/fft_system/fft_system/../FFTcore/FFTcore.vhd" Line
39. Library unit VPKG is not available in library UNISIM.
vhdtdtfieclaration (Module FFTcore) not found.
tdtfi(vhdl) completed with errors.

Process "Create Schematic Symbol" completed successfully