How to change a library refence in modelsim?

Hello Abraham,

I do not understand your answer;

Altera & modelsim have installed different versions of the "altSquare" IP block on my system. All of tem reside in files called altera_mf.vhd with component declarations in altera_mf_components.vhd. (all of them have identical names, but they reside in different directories)

Modelsim is referring to the wrong verions so the statement

use altera_mf.all makes modelsim use a version of altSquare as part of altera_mf that is not compatible with an other ip block from altera that I use (calculation of logarithm). The problem is in the signature of the blocks.

I know where the right version of altera_mf stands, but I cannot change the directory reference in modelsim successfully. (So the statement use altera_mf.all needs to make modelsim include another file (library) with the same name coming from a different directory, it is not that i am missing use altera_mf.all, the statement ends up compiling the wrong file with the right name.)

Best regards,

Johi.