General Description: After I attach a project library to another project, unexpanded block errors are reported in the implementation tools when I use HDL macros from the attached library.
解决方案
These errors are reported is because the underlying netlists for the macros are not copied to the new project when the library is used.
To correct this problem, either re-synthesize the macro in the new project, or manually copy the XNF or EDIF file for the HDL macro into the new project.