Question: Get list of files for synthesis

[bennyslbs]

I know that VUnit is for simulation, but is it possible to get a list of source files required for synthesis given a specific top module?

I can see there is get_implementation_subset and dependency_graph, that might be usable, but I don't know if they can be used for that.

How do you get the list of required source files for synthesis?

[tasgomes]

@bennyslbs try this:

    top = lib.get_source_file("hdl/overlay/overlay.vhd") # Adapt here to your top-level

    print("Dependency list:")
    for f in vu.get_compile_order([top]):
        print(f.name)
    print("----------------")

This will print:

Dependency list:
..\lib\fw\vhdl\en_cl\hdl\en_cl_base_pkg.vhd
hdl\overlay\overlay_rb_pkg.vhd
hdl\overlay\overlay.vhd
----------------

• vu is the root VUnit object.
• lib is a specific VHDL library, the one where you added your top-level file.

[LarsAsplund]

Have a look at the get_implementation_subset method. It will also handle elaboration time dependencies.

[bennyslbs]

.get_compile_order([top])

.get_compile_order([top]) with .get_implementation_subset([top]) gives same result.

If top is an file entity without architecture. Architecture in a separate file, then the only file listed is the top-file, not the architecture.
Thats correct with respect to compile order, but I wan't an architecture compiled as well.

Notes:

• If architecture is in the same file it works fine.
• Package and package body in separate files works fine.
• Using a configuration file as top with entity and architecture in 3 separate files -> OK
• Simulation without configuration and entity and architectures in 2 separate files -> OK

Is it expected behaviour, an bug, or have I missed somthing?

[LarsAsplund]

The reason is that the architecture depends on the entity and not the other way around. If you get the compile order for the top architecture file, you will see the entity file first and the architecture file second.

[bennyslbs]

.get_implementation_subset([top]) gives the same result - architecture file (and its dependencies) are not included in the list.

It is correct with respect to compile order, but for implementation I want an architecture as well, and if I only have one architecture, I would like to skip a configuration file.

Is it intended that the configuration file is required, if entity and architecture are in separate files?

[LarsAsplund]

get_implementation_subset is also looking for dependencies. The difference is that it takes the dependencies required to elaborate the design. The architecture depends on the entity so you need to use that as an argument to the methods. It also works if you have multiple architectures to an entity. Simply pass the architecture you intend to synthesize and you will get a list of all required files. You don't need any configuration files.

[bennyslbs]

Thank you for the help, it works 👍.