This is a known issue with sources from the AXI interface.It is currently under investigation and is to be fixed in a future release of the ISE Design Suite tools.
To work around this issue, the -relax switch for theAldec Riviera Pro vcom command must be employed.This can be done by adding the switch to theOPTION line for Aldec in the Compxlib configuration file (compxlib.cfg).
#///////////////////////////////////////////////////////////////////////
# Setup file name: Aldec
SET:riviera:LIBRARY=library.cfg
#
# Aldec options for VHDL Libraries
# Syntax:-
# OPTION:<simulator_name>:<language>:<library>:<options>
# <library> :- u (unisim) s (simprim) c (xilinxcorelib)
# r (coolrunner)
# vcom -work <library> <OPTION> <file_name>
#
OPTION:riviera:vhdl:u:-93 -relax -quiet -nowarn ELAB1_0026
OPTION:riviera:vhdl:s:-93 -relax -quiet -nowarn ELAB1_0026
OPTION:riviera:vhdl:c:-93 -relax -quiet -nowarn ELAB1_0026
OPTION:riviera:vhdl:r:-93 -relax -quiet -nowarn ELAB1_0026
OPTION:riviera:vhdl:i:-93 -relax -quiet -nowarn ELAB1_0026
OPTION:riviera:vhdl:e:-93 -relax -quiet -nowarn ELAB1_0026
The "compxlib.cfg" fileshould be found in the directory where Compxlib was run.