gistfile1.txt

#!/bin/ruby
require 'fileutils'

def show_usage
  STDERR.puts "usage: vbuild [build|run|buildrun] topmodule_path"
  exit 1
end

# Sanity check
show_usage if ARGV.length < 2

# Setup variables
command = ARGV.shift
show_usage if !['build', 'run', 'buildrun'].include? command
build = ['build', 'buildrun'].include? command
run = ['run', 'buildrun'].include? command

top_file = ARGV.shift

top_name = File.basename(top_file, '.sv')

bin_dir = "out"
bin_file = "#{bin_dir}/#{top_name}"

if build
  puts "Building #{top_name}..."

  FileUtils.mkdir_p bin_dir
  cmd = ['iverilog', '-g2012',
         '-o', bin_file,
         '-s', top_name
        ].concat(Dir.glob("**/*.sv"))
  exit 1 if !system *cmd
  puts "Finished building."
end

if run
  puts "Running #{top_name}..."
  system bin_file
end