AR# 11134: 3.1i XST - ERROR: (VHP_3024). Cannot read library unit [design]. It has been stored before the predefined library unit...
AR# 11134
3.1i XST - ERROR: (VHP_3024). Cannot read library unit [design]. It has been stored before the predefined library unit...
描述
Keywords: XST, 3024, VHP, read, library
Urgency: Standard
General Description: When I try to synthesize a design in XST, the following error message appears:
ERROR: (VHP__3024). Cannot read library unit <library_name>. It has been stored before the predefined library unit std_logic_1164 of library ieee. Clean your dump directory and recompile your design again.
ERROR: (VHP__3016). <file_name>.vhf Library unit trn1 required for unit trn1 does not exist in library work.
ERROR: (VHP__0340). <file_name>.vhf Entity <trn1> does not exist in library <work>.
解决方案
This error occurs if the date on the machine is incorrectly set to a date in the past. The design file is thought to be older than the IEEE library, which causes these errors.
To solve the problem, simply set the computer's date to the correct value.