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digitalmars.D.learn - setenv in Windows + phobos and tango

reply 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/
Mar 06 2007
next sibling parent 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
Mar 06 2007
prev sibling next sibling parent 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
Mar 06 2007
prev sibling parent reply 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
Mar 06 2007
next sibling parent 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!
Mar 06 2007
prev sibling parent 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
Mar 08 2007