This is Debian GNU/Linux's prepackaged version of the Icarus Verilog Compilation System. Icarus verilog was developed by Stephen Williams . This package was prepared by Hamish Moffatt . No source changes were required. Original sources were obtained from ftp://icarus.com/pub/eda/verilog Copyright: ivl is licensed under the GNU General Public License. Please refer to the full text of the GPL in /usr/share/common-licenses/GPL.