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From Ninju Bohra <>
Subject Re: Re: Settting environment variables
Date Fri, 20 Apr 2007 15:37:48 GMT

Sorry about that...for <exec> the setting of evironment variables is done with the <env>
element...please read the documentation (
for specific details.


----- Original Message ----
From: query <>
To: Ant Users List <>
Cc: Ninju Bohra <>
Sent: Friday, April 20, 2007 2:21:38 AM
Subject: Re: Re: Settting environment variables

  When I tried to use <sysproperty> in <javac> and <exec> task, build compilation
is failing with the following errors.

javac doesn't support the nested "sysproperty" element.

exec doesn't support the nested "sysproperty" element.

It looks like that element is supported only with <java>.
But I want to set env variables for <javac>  and <exec >tasks. Can anyone help
me ???????

On Thu, 19 Apr 2007 Ninju Bohra wrote :
>By the time ANT starts, the PATH and INCLUDE environment variables values are set (by
the ant.bat or OS command script) and can not be altered.
>However if one you target needs to start seperate process (<exec>, <javac>,
<java>, etc...) you can control the value of the enviroment variables that the child
process will have...use the <sysproperty> sub element to correct that.
>Hope that make sense????
>----- Original Message ----
> From: query <>
>To: ant <>
>Sent: Thursday, April 19, 2007 9:25:39 AM
>Subject: Settting environment variables
>I am having a set of ANT build files. I want to change "Path" and "include" environment
variables only in build file.
>I tried the following options to reset "include" variable in the build file.
><property environment="env"/>
>1.<exec executable="cmd">
>      <env key="include" path="${new.includepath}"/>
>  </exec>
>2.<property name="${env.include}" value="${new.includepath}"/>
>3.<property name="env.include" value="${new.includepath}"/>
>4.<property name="env.${include}" value="${new.includepath}"/>
>When I tried to echo "include" variable in the same build file, it is still showing the
default old settings.
>Is there any other way to modify the environment variables only for some instance and
not for other?
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