Issue Compiling VHDL with Internal Library References

[mhrengineer]

I'm having issues compiling VHDL files that use internal libraries. The compiler suggests using the -L option, but the way I'm using it doesn't seem to work. Could someone please guide me?

Here’s the error I’m seeing:
** Error: library TEST_LIB not found
> ABC_BLOCK.vhd:36
|
36 | library test_lib;
| ^^^^^^^^^^^^^^^^^^^
|
= Note: library search path contains: /root/.nvc/lib, /usr/lib/x86_64-linux-gnu/nvc
= Note: add additional directories to the search path with the -L option
** Error: design unit depends on WORK.ABC_BLOCK which was analysed with errors
> ABC_monitor.vhd:46”

Any help would be appreciated.

[nickg]

If you compiled the test_lib files with nvc --work=test_lib -a foo.vhd you can use -L. (i.e. search for the library in the current working directory).

[mhrengineer]

Thanks, Nick for your help. The following commands worked for me:

nvc --work=test_lib -a mux.vhd
nvc --work=test_lib -a mux_tb.vhd
nvc --work=test_lib -e mux_tb
nvc --work=test_lib -r mux_tb

Regarding the -L option, could you provide any example usage? Is it something like:
nvc -L --work=mylib:somedir ...
I couldn’t find any examples on the website.

[nickg]

Regarding the -L option, could you provide any example usage? Is it something like:
nvc -L --work=mylib:somedir ...

The -L option needs an argument which is the directory to search for any libraries not found through --work=.. or --map=... So you would pass -L . to search for libraries in the current working directory. In your example it's not necessary as everything is compiled into the same library.