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digitalmars.D - Distribution

reply Rob <Rob_member pathlink.com> writes:
Every D program I've seen has the source code. does this mean any distributions
have to include the source? also if I made a game, is there a way to compact
everything into one large executable?
Mar 28 2005
next sibling parent clayasaurus <clayasaurus gmail.com> writes:
Rob wrote:

 Every D program I've seen has the source code. does this mean any distributions
 have to include the source? also if I made a game, is there a way to compact
 everything into one large executable?
 


You don't need to distrubute source code with your program, and you can 
compact everything into a large exe using 
http://www.jrsoftware.org/isinfo.php
Mar 28 2005
prev sibling next sibling parent Derek Parnell <derek psych.ward> writes:
On Tue, 29 Mar 2005 01:55:27 +0000 (UTC), Rob wrote:


 Every D program I've seen has the source code. does this mean any distributions
 have to include the source? also if I made a game, is there a way to compact
 everything into one large executable?


You have at least two options:
(1) Compile the program into an executable for each platform you wish to
run it on, and distribute the executable.

(2) Compile the modules into object files, optionally bundle them into a
library, and provide function signature modules in source form. Distribute
the library (or object files), and the function signature source. People
can then use your object files in their applications without having to see
your implementation source code.

For example, your module source code looks like ...

  module myfoo;
  int Bop (int a, int b) { return a * a + b * b - 1; }
  int Bif (int a, int b) { return a * a - b * b + 1; }

Then you create a library containing the compiled version of this module...

  build myfoo

And create a function signature source that would look like ...
  module myfoo;
  int Bop (int a, int b);
  int Bif (int a, int b);

Then the application code could look like ...

  module mytest;
  import std.stdio;

  import myfoo;  // Function signatures
  pragma(lib, "myfoo.lib"); // Function definitions.

  void main()
  {
    writefln( "%d %d", Bop(2,3), Bif(2,3));
    writefln( "%d %d", Bop(3,4), Bif(3,4));
    writefln( "%d %d", Bop(4,5), Bif(4,5));
    writefln( "%d %d", Bop(5,6), Bif(5,6));
  }

and compile this with ...

   build mytest

** Note that this method does not work with Class definitions. I'm not sure
why but when I try it I get linker messages such as ...

  myfoo.lib(myfoo)  Offset 1A420H Record Type 0091
   Error 1: Previous Definition Different : __init_5myfoo3Foo

Maybe someone could enlighten both of us how to do the library trick with
classes. :D

-- 
Derek Parnell
Melbourne, Australia
http://www.dsource.org/projects/build/
http://www.prowiki.org/wiki4d/wiki.cgi?FrontPage
29/03/2005 12:57:40 PM
Mar 28 2005
prev sibling parent reply "Walter" <newshound digitalmars.com> writes:
"Rob" <Rob_member pathlink.com> wrote in message
news:d2acif$bac$1 digitaldaemon.com...

 Every D program I've seen has the source code. does this mean any


distributions

 have to include the source?


For code that you write, you can copyright it, put it in public domain, do
closed source, whatever you want as it is your code. D most definitely does
NOT require that any programs compiled with D and linked with the Phobos D
runtime library be made open source. The D runtime library is open source,
but is not GPL.

However, the D compiler front end source is GPL, and any program that
incorporates the D compiler source code will need to be GPL or acquire a
separate license from Digital Mars.
Mar 29 2005
parent reply Marco A <Marco_member pathlink.com> writes:
In article <d2ce3q$2afh$1 digitaldaemon.com>, Walter says...

However, the D compiler front end source is GPL, and any program that
incorporates the D compiler source code will need to be GPL or acquire a
separate license from Digital Mars.


I thought the compiler front end had both the Artistic license and the GPL, I
haven't looked at the license in a while.  

By the way, could someone demand to you to release all of the DMD source since
it uses the GPL'd D compiler front end source?

just curious
Apr 02 2005
next sibling parent =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb algonet.se> writes:
Marco A wrote:


 In article <d2ce3q$2afh$1 digitaldaemon.com>, Walter says...
 

However, the D compiler front end source is GPL, and any program that
incorporates the D compiler source code will need to be GPL or acquire a
separate license from Digital Mars.


 
 I thought the compiler front end had both the Artistic license and the GPL, I
 haven't looked at the license in a while.  


You are right:

(dmd/src/dmd/readme.txt)

 This is the source code to the front end Digital Mars D compiler.
 It covers the lexical analysis, parsing, and semantic analysis
 of the D Programming Language defined in the documents at
 www.digitalmars.com/d/


[...]

 These sources are free, they are redistributable and modifiable
 under the terms of the GNU General Public License (attached as gpl.txt),
 or the Artistic License (attached as artistic.txt).


The Artistic License does not require you to release any sources.
(it's the same license as Perl uses, and can be viewed online at:
http://www.opensource.org/licenses/artistic-license.php, as well)

However, the GPL licensing allows add-on programs - such as GDC -
to use DMD front-end and integrate it with GPL programs like GCC,
placing the result (that is: the GCC/GDC compiler), under GPL too.

Which means that GDC is available under GPL, but not under Artistic.
It would also be possible to create a D compiler that was released
under the Artistic license, but not under the GPL. (i.e. it's Dual)


Maybe Walter was thinking of the DMDScript sources, which are GPL ?

--anders

PS.

FSF says this about the "License of Perl" (similar to DMD front-end) :


 License of Perl
 
 This license is the disjunction of the Artistic License and the GNU
 GPL--in other words, you can choose either of those two licenses. It
 qualifies as a free software license, but it may not be a real copyleft.
 It is compatible with the GNU GPL because the GNU GPL is one of the
 alternatives.
 
 We recommend you use this license for any Perl 4 or Perl 5 package you
 write, to promote coherence and uniformity in Perl programming. Outside
 of Perl, we urge you not to use this license; it is better to use just
 the GNU GPL.


And this about the "original Artistic License" (artistic.txt) itself:


 We cannot say that this is a free software license because it is too
 vague; some passages are too clever for their own good, and their
 meaning is not clear. We urge you to avoid using it, except as part of
 the disjunctive license of Perl.
 
 The problems are matters of wording, not substance. There is a revised
 version of the Artistic License (dubbed "Artistic License 2.0") which is
 a free software license, and even compatible with the GNU GPL. This
 license is being considered for use in Perl 6. If you are thinking of
 releasing a program under the Artistic License, please do investigate
 other GPL-compatible, Free Software licensing options listed here first.


See also:
http://dev.perl.org/perl6/rfc/211.html
"The Artistic License Must Be Changed"
Apr 02 2005
prev sibling parent "Walter" <newshound digitalmars.com> writes:
"Marco A" <Marco_member pathlink.com> wrote in message
news:d2na37$18kn$1 digitaldaemon.com...

 By the way, could someone demand to you to release all of the DMD source


since

 it uses the GPL'd D compiler front end source?


Good question. No, since Digital Mars as the copyright holder has additional
rights.
Apr 03 2005