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Copyrights | Licenses


As a consequence of the runtime copyright, you are not allowed to distribute an executable produced by GHDL without the VHDL sources. To my mind, this is not a real restriction, since it is pointless to distribute VHDL executable. Please, send a comment (:ref:`requesting_enhancements`) if you don't like this policy.


GHDL is copyright |copy| 2002 - 2017 Tristan Gingold.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.


This is a free documentation; you can redistribute it and/or modify it under the terms of the Creative Commons Attribution-ShareAlike 4.0 license. You are free to share (copy and redistribute the material in any medium or format) and/or adapt (remix, transform, and build upon the material for any purpose, even commercially). We cannot revoke these freedoms as long as you follow the these terms:

  • Attribution: you must provide the name of the creator and attribution parties (more info), a copyright notice, a license notice, a disclaimer notice, a link to the material, a link to the license and indicate if changes were made (see marking guide and more info). You may do so in any reasonable manner, but not in any way that suggests we endorse you or your use.
  • ShareAlike: if you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions: you may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

See CC-BY-SA-4.0 Legal Code for more details.

List of Contributors

Contributor [1] Role
Baggett, Jonas signal selection
Bertram, Felix VPI interface
Davis, Brian Windows Mcode builds
Drummond, Brian GCC 4.8.2 update, OSVVM port, some bugfixes
Gingold, Tristan [2] Sole author of GHDL as a whole
Jensen, Adam FreeBSD builds
Koch, Markus vendor pre-compile script for Lattice (GNU/Linux)
Koontz, David Mac OSX builds, LRM compliance work, bugfix analyses
Lehmann, Patrick Windows compile scripts, vendor library pre-compile scripts (win+lin), building in MinGW, AppVeyor integration.
Martinez-Corral, Unai Docker builds, Travis-CI & Docker, adapt/fix RTD theme
van Rantwijk, Joris Debian packaging

Only those who made substantial contributions are shown in the table above, but many others contributed with minor patches. You can find a list at |SHIELD:contributors|

With apologies to anyone who ought to be either on this table or in the GitHub contributor list, but isn't. Thanks also to all those who have reported bugs and support issues, and often patches and testcases to either the late gna! website or


[1]In alphabetical order