Robert:
You shouldn't need multiple javac tasks - you can do some work with
condition's. I have a similar need in a project I am working on where I
want to be able to set some properties to default values if not set
(either by the current ant task or the environment). I am using ant
contrib to some "creative" work... However, if I were to use "stock"
ant, I might do the following:
<!-- Substitute your property file name as the file attribute -->
<property file="mypropfile.props"/>
<dirname property="JRE_PARENT_DIR" file="${java.home}"/>
<condition property="JAVAC" value="${JRE_PARENT_DIR}/bin/javac">
<not>
<isset property="JAVAC"/>
</not>
</condition>
The above may look a little funny. I ran a test an noted ${java.home}
returns the jre directory from my system's JAVA_HOME. So, above I
compute the parent dir of this via dirname. Then, in condition if the
property JAVAC has not been set, I force its value to the location of
javac. This assumes, that in your property file you will use a property
entitiled JAVAC...
In your execute you will need to use ${JAVAC}.
Hope that helps...
Scot
Robert Nicholson wrote:
On Apr 27, 2006, at 10:58 PM, Stefan Bodewig wrote:
On Thu, 27 Apr 2006, Robert Nicholson <[EMAIL PROTECTED]> wrote:
If I write a javac task in Ant 1.5 that uses executable and I use a
property to detemine the path of the executable. What will javac do
if there's no property set?
If you mean you have something like executable="${prop}" then Ant will
try to execute an executable named ${prop} if the property named
"prop" isn't set. Setting it to an empty string wouldn't help either.
Basically I want the default compiler to be the one that's executing
Ant but the ability
to override that thru a properties file. It sounds like I actually
have to have javac's conditional
on prop so I need multiple javac tasks.
Will it use the jvm that's running ant to do the compile?
Only if there is no executable attribute at all.
Stefan
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Scot P. Floess
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