SOPC own component: design library "work" does not contain primary unit

[Altera_Forum]

hello again, 

 I built my own component and added a Altera Megafunction - the FIFO.  When running SOPC builder there is the following error: design library "work" does not contain primary unit "my_fifo"  in the "my_component.vhdl" i added this line: use work.my_fifo;  Why is there the mentioned error in SOPC builder?  Thanks for every hint!

[Altera_Forum]

update: 

 When adding "add_file my_fifo.vhd {SYNTHESIS SIMULATION}" to the _hw.tcl file, then in ModelSim the following error occurs: # ** Error: C:/Test/IP/my_component.vhd(157): (vcom-1141) Identifier "my_fifo" does not identify a component declaration.  Where is the problem?  When compiling the my_component.vhd outside the SOPC builder everything works...  Does anyone has a hint for me?

[Altera_Forum]

Is my_fifo a package? If it is just a component you shouldn't try to include it with a 'use' line. Just declare the component in the architecture and instantiate it. 

What you you have on line 157 of my_component.vhd?