Author Name: Iztok Jeras (@jeras)
Original Redmine Issue: 876 from https://www.veripool.org
Original Date: 2015-01-25

Hi,

Verilator fails to build header files if parameters are defined in a few ways, I will describe how to reproduce the issue on a project of mine on a branch with removed extra dependencies.

https://github.com/jeras/rp_8bit/tree/verilator_parameterization_bug

There seem to be no errors warning or crashes reported by Verilator, just a missing header file.

git clone https://github.com/jeras/rp_8bit.git rp_8bit_verilatorbug
cd rp_8bit_verilatorbug
git checkout fbe357363d9ce355244e19f24136250a5a9e80d2
cd sim/
make verilator

To compare the failing code to a working version checkout the next commit:

git checkout verilator_parameterization_bug
make verilator

For parameters defined as "parameter int unsigned" it seems to be enough to redefine them omitting the type, the same does not seem to be enough for the HEX constant. Using typed parameter definitions inside RTL does not seem to be an issue.

Regards,
Iztok Jeras