On Sep 26, 2010, at 8:23 AM, Marina wrote:
> Hello!
> In essence, I would like to know how to define a global property
> conditionally,
> and then have it available to all build files via <import>.
>
Um, use the <condition> task?
-Matt
> Now the details:
> I have a build.common.xml file with all global properties and paths defined.
> I
> import it into my main build and component build files via <import>, and this
> makes everything that is defined in the common file available to all other
> build
> files.
> build.common.xml:
> <property name="build.classes" value="${build}/classes"/>
> ...
> <path id="compile.classpath">
> <pathelement location="${build}/classes"/>
> <path refid="jdk.classpath"/>
> <fileset dir="${lib}">
> <include name="**/*.jar"/>
> </fileset>
> ...
>
>
> Then, I have a main build.xml that calls a few component build.xml via <ant
> file=...> call.
> If I <import> the build.common.xml into all my build files - I have all
> properties and paths available to all builds.
>
> It all works great, but now I want to have the build.classes property set
> conditionally, based on the build mode (dev vs. release). Ideally, I would
> like
> something similar to the C #ifdef macros:
>
> build.common.xml:
> if
> mode='dev'
> then
> <property name="build.classes" value="${build}/dev/classes"/>
> else
> <property name="build.classes" value="${build}/release/classes"/>
>
> I can do the <if> logic if I define this property in the main build, for
> example, as part of some <init> task. But, it means that the property is not
> global anymore, and, which is more important, I cannot define my paths in the
> build.common.xml based on the value of this property. At least I could not
> figure out yet a way to do it...
>
> So, I was pondering over a few options:
> 1. define all properties like that and paths in the main build.xml and pass
> them
> as parameters to all component builds - very involved and inflexible...
> 2. define a target <init> in the build.common.xml that defines all those
> properties and paths - and make all builds call it (or depend on it) - again,
> very involved in terms of refactoring my existing builds, and inflexible.
> 3. any other way???
>
> If only I could just define that one global property conditionally! I feel
> like
> I'm missing some basic core concept here....
>
> Any pointers?
>
> Thanks!
> Marina
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