The GHDL front-end, the
std.textio package and the runtime
grt) are copyrighted Tristan Gingold, come with absolutely
no warranty, and are distributed under the conditions of the General
ieee.numeric_std packages are
copyrighted by the IEEE. The source files may be distributed without
change, except as permitted by the standard.
This source file may not be sold or distributed for profit. See the source file and the IEEE 1076.3 standard for more information.
ieee.Math_Complex packages are copyrighted by the IEEE. See
source files for more information.
ieee.VITAL_Memory packages are copyrighted by IEEE. See source
file and the IEEE 1076.4 standards for more information.
std_logic_textio contained in the
synopsys directory are
copyrighted by Synopsys, Inc. The source files may be used and
distributed without restriction provided that the copyright statements
are not removed from the files and that any derivative work contains the
copyright notice. See the source files for more information.
std_logic_arith contained in the
directory is copyrighted by Mentor Graphics. The source files may be
distributed in whole without restriction provided that the copyright
statement is not removed from the file and that any derivative work
contains this copyright notice. See the source files for more information.
As a consequence of the runtime copyright, you may not be allowed to distribute an executable produced by GHDL without the VHDL sources. To my mind, this is not a real restriction, since there is no points in distributing VHDL executable. Please, send a comment (Reporting bugs) if you don’t like this policy.