Hello Philip,
Ant does not have the power to change the environment variables which
were assigned by the starting shell. Perl can do that I think.
Environment variables do not matter much to ant itself, my guess is that
you want to run several commands from ant which require special env
variables.
The exec task has an env nested element to set environment variables.
<exec executable="cmd">
<arg value="some.bat"/>
<env key="LALA_HOME" value="C:\Program Files\LALA"/>
</exec>
If you want to pass some environment variables to several <exec/>
invocations, you can use presetdef to create a variation of exec which
will always set some environment variables. Or you can write a wrapper
.BAT or .CMD file which sets whatever you want, and always execute your
commands through the wrapper.
Regards,
Antoine
Maurer Philipp wrote:
Thanks,
Sure, I could use setx, but this changes the environment variable on my
maschine i.e. in every new shell I open, but not the current one. I guess that
is not even possible using a normal e.g. C++ program.
Philipp
-----Ursprüngliche Nachricht-----
Von: Antoine Levy Lambert [mailto:[email protected]]
Gesendet: Donnerstag, 18. März 2010 14:09
An: Ant Users List
Betreff: Re: AW: Ant Environment
Agreed with Jan. If you want to modify permanently the environment
variables of Windows machines, one of the tools you
can use is VBS. I think you will find articles about which API calls to
use to do this in VBS.
Ant can kick off a VBS script if you do
<exec executable="wscript.exe">
<arg value="full path to vbs file"/>
</exec>
Regards,
Antoine
[email protected] wrote:
You are right: you cannot change the values from Ant.
You could use the "setx" system command, so NEW processes will get the new
values.
I dont know any possibility to change the environment for RUNNING processes.
Maybe via PowerShell, WindowsManagementInstrumentation, ... a la
for(Projess p : allRunningProcesses)
p.setEnv(key, newValue)
Jan
-----Ursprüngliche Nachricht-----
Von: Maurer Philipp [mailto:[email protected]]
Gesendet: Donnerstag, 18. März 2010 08:18
An: [email protected]
Betreff: Ant Environment
Hello,
I'd like to make ant modify my current shell environment on Windows
maschines.
Example:
I'd like something like an 'ant set' (target 'set') that sets some
'foo=bar'. Calling that target should have the same effect
than calling
'set foo=bar'.
I tried some stuff: calling python scripts, generating and executing
batch files, using setx, using cmd /C set.
I think this is a more general problem and I think it is not
possible at
all (maybe someone could confirm this):
All processes are forked or run in a separate shell and so in
a separate
environment. Changing this environment does not affect the environment
from which I'm calling ant.
Any ideas ? Windows-System calls ? Python calls ?
Thanks,
Philipp
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