• Daniel Keep <daniel.keep.lists gmail.com> Mar 06 2007
• tomD <t_demmer spam.web.de> Mar 06 2007
• Derek Parnell <derek psych.ward> Mar 06 2007
• Kirk McDonald <kirklin.mcdonald gmail.com> Mar 06 2007
• Mike Parker <aldacron71 yahoo.com> Mar 06 2007
• tomD <t_demmer spam.web.de> Mar 08 2007

Daniel Keep <daniel.keep.lists gmail.com> writes:

Hi all.

I'm currently trying to write a general forwarding program as part of my
attempts to figure out how to install dmd (phobos) and dmd (tango)
side-by-side.  The idea is to copy this forwarding program into the same
directory as, say, my tango dmd.exe and call it dmd-tango.exe.  That
way, whenever you use "dmd-tango", it on-calls the right "dmd".

(At the moment, I have two DMD installs: \bin\dmd-phobos and
\bin\dmd-tango.)

Incidentally, cmd.exe can't execute shortcuts, so I can't use those and
batch files seem to be causing problems with arguments.

Basically, in order to make absolutely 100% "yes, really I mean it" sure
the program I call looks in its' own directory for other executables, I
need to put the target executable's directory on the front of the PATH
environment variable.  Unfortunetly, std.c.stdlib.setenv isn't supported
on Windows.

There's std.process.execve, which you can pass an environment to, but
the problem with that is that there doesn't seem to be any way to
actually *get* the complete environment so I can modify PATH and pass
the rest unaltered.

So, is there:

A) any way to do this, or
B) any other sane way to get tango and phobos to co-exist?  And no,
having to run a "switch" application simply doesn't cut it.

Any suggestions would be welcome.

	-- Daniel

I get a funny feeling all this could be easily avoided if only DMD
didn't insist on always linking phobos.lib...

-- 
Unlike Knuth, I have neither proven or tried the above; it may not even
make sense.

v2sw5+8Yhw5ln4+5pr6OFPma8u6+7Lw4Tm6+7l6+7D
i28a2Xs3MSr2e4/6+7t4TNSMb6HTOp5en5g6RAHCP  http://hackerkey.com/

tomD <t_demmer spam.web.de> writes:

Daniel Keep Wrote:

 
 There's std.process.execve, which you can pass an environment to, but
 the problem with that is that there doesn't seem to be any way to
 actually *get* the complete environment so I can modify PATH and pass
 the rest unaltered.
 
 So, is there:
 
 A) any way to do this, or


Yes. See my bug report #1004 in the bug list on how to 
do that with spawnvpe. execvpe should work along the
same line.

 B) any other sane way to get tango and phobos to co-exist?  And no,
 having to run a "switch" application simply doesn't cut it.


1) Put phobos.lib into  P/../lib/phobos/
   put tango into  P/../lib/tango/ (but as phobos.lib)
2) nuke the lib line from your sc.ini
3) in dmd-phobos add
 LIB=" P/../lib/phobos";"% P%\..\lib";"% P%\..\mfc\lib";%LIB%
to the environment and exec dmd with the whole command line
4) in dmd-tango do the same, just change the location.

Should work (tm), but then again, I did not try :-)

Ciao
Tom

Derek Parnell <derek psych.ward> writes:

On Wed, 07 Mar 2007 05:49:00 +1100, Daniel Keep wrote:

 Unfortunetly, std.c.stdlib.setenv isn't supported
 on Windows.


I use this (and it works) ...

import std.string;
alias char[] string;
extern (C)
{
    char*   getenv  (char *);
    int     putenv  (char *);
}

//-------------------------------------------------------
string GetEnv(string pSymbol)
//-------------------------------------------------------
{
    return std.string.toString(getenv(std.string.toStringz(pSymbol)));
}

//-------------------------------------------------------
void SetEnv(string pSymbol, string pValue, bool pOverwrite = true)
//-------------------------------------------------------
{
    if (pOverwrite || GetEnv(pSymbol).length == 0)
        putenv(std.string.toStringz(pSymbol ~ "=" ~ pValue));
}

-- 
Derek Parnell
Melbourne, Australia
"Justice for David Hicks!"
skype: derek.j.parnell

Kirk McDonald <kirklin.mcdonald gmail.com> writes:

Daniel Keep wrote:
 So, is there:
 
 A) any way to do this, or
 B) any other sane way to get tango and phobos to co-exist?  And no,
 having to run a "switch" application simply doesn't cut it.


I wrote this a little while back:
http://dsource.org/projects/tango/wiki/PhobosTangoCooperation

-- 
Kirk McDonald
http://kirkmcdonald.blogspot.com
Pyd: Connecting D and Python
http://pyd.dsource.org

Mike Parker <aldacron71 yahoo.com> writes:

Kirk McDonald wrote:
 Daniel Keep wrote:
 So, is there:

 A) any way to do this, or
 B) any other sane way to get tango and phobos to co-exist?  And no,
 having to run a "switch" application simply doesn't cut it.


 I wrote this a little while back:
 http://dsource.org/projects/tango/wiki/PhobosTangoCooperation
 


command prompts, but all I did was set the path to two different DMD 
installations. I never even considered replacing sc.ini with environment 
variables. Thanks for sharing!

tomD <t_demmer spam.web.de> writes:

Kirk McDonald Wrote:

 Daniel Keep wrote:
 So, is there:
 
 A) any way to do this, or
 B) any other sane way to get tango and phobos to co-exist?  And no,
 having to run a "switch" application simply doesn't cut it.


 I wrote this a little while back:
 http://dsource.org/projects/tango/wiki/PhobosTangoCooperation
 
 -- 
 Kirk McDonald
 http://kirkmcdonald.blogspot.com
 Pyd: Connecting D and Python
 http://pyd.dsource.org


-L/SCANLIB
to DFLAGS to actually make link look at $LIB.

Ciao
Tom