Hi John,
We do something roughly similiar to this. We sometimes compile our client
and server components using a different Java version
1. No, you shouldn't need different classpaths. We have no compiler jars
in the classpath when invoking the <javac> task.
2. I could never get the compiler attribute to work correctly. so our
compile target uses a property to point to the compiler executable location.
So our compile targets look like this:
<!-- Compile the java classes using javac 1.3 on Windows -->
<target name="compileNTServer"
description="* Compile the java classes using javac 1.3 on
Win" if="ENV.windir">
<echo message="-> [project buildIncludes] - [target
compileNTServer]"/>
<javac srcdir="${srcpath}" destdir="${classes}"
classpath="${classpath}"
executable="${nt.server.compiler.loc}/bin/javac" fork="yes"/>
</target>
<!-- Compile the java classes using javac 1.4 on WinNT -->
<target name="compileNTClient"
description="* Compile the java classes using javac 1.4 on
Win" if="ENV.windir">
<echo message="-> [project buildIncludes] - [target
compileNTClient]"/>
<javac srcdir="${srcpath}" destdir="${classes}"
classpath="${classpath}"
executable="${nt.client.compiler.loc}/bin/javac" fork="yes"/>
</target>
you could have
<target name="compile">
<javac srcdir="${srcpath}" destdir="${classes}"
classpath="${classpath}"
executable="${compiler.loc}/bin/javac" fork="yes"/>
</target>
With ${compiler.loc} set depending on the previous targets..
To get this working I needed to set fork to "true".
Anyone know a better solution than this?
-----Original Message-----
From: Longie [mailto:[EMAIL PROTECTED]
Sent: 24 November 2004 17:47
To: [EMAIL PROTECTED]
Subject: Compiler Attribute
Hello,
I have different versions of java installed on a winxp machine. I need
to be able to run ant depending on the compiler which is chosen by the
user either via the program or at runtime via a command line argument.
If none is specified then use hte default java classpath.
Questions;
1) Do i need to set different classpaths for each of the java versions
installed and then set the compiler attribute
2) Is the compiler attribute set in
<javac srcdir="${src-dir}" destdir="${obj-dir}" debug="on"
deprecation="on" commpiler="something"/>
I have been testing with classloaders but i will be wrapping GUI around
Ant and i want to be able to give the user an option to use different
java versions so Ant is the better option.
Any help is appreciated.
John
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