----- Original Message -----
From: "Rhino" <[EMAIL PROTECTED]>
To: "ant-user" <[email protected]>
Sent: Thursday, December 15, 2005 5:36 PM
Subject: Compiling enums in Ant 1.6.5
Can the <javac> task in Ant 1.6.5 compile a typesafe enum when using the
'modern' compiler? If yes, how do I persuade it to do so? If no, is there
any workaround or will I just have to compile the enum separately and
include it in my build manually?
Here is my task:
<target name="compile" description="Compile the Java code.">
<javac srcdir="${common.src}" destdir="${common.bin}" compiler="modern"
fork="yes"
verbose="no" debug="on" debuglevel="lines,vars,source" deprecation="yes"
description="Compile the code in the common package.">
<patternset refid="ps.common"/>
</javac>
</target>
Here is the (relevant) output from the build, which had both the -debug
and -verbose switches on:
[javac]
E:\eclipse\3.0.1\eclipse\workspace\Common\src\ca\maximal\common\Palette.java:19:
'class' or 'interface' expected
[javac] public enum Palette {
[javac] ^
For what it's worth, I tried adding the source="1.5" parameter to the
target and got the message "javac: invalid source release: 1.5". My
JAVA_HOME environment variable is set to D:\Program
Files\Java\jre1.5.0_06, otherwise I'd suspect that I was pointing at a 1.4
(or earlier) compiler.
Can anyone shed some light on how I can get Ant to compile this enum?
I've solved my problem, although I'd like some guidance on why I had to
resort to this to make it work.
Shortly after clicking on 'Send', I decided to look in my JAVA_HOME\bin
directory to verify that javac.exe was there. It _wasn't_ there and I
suddently remembered why: it was a JRE, not a JDK, so naturally no compiler
was present!
[Hmmm, I just noticed Alexey's reply to my question; Alexey saw the problem
before I could finish this note!]
Anyway, I changed JAVA_HOME to point to the 1.5.0_06 JDK instead of the JRE.
This was in d:\Program Files\Java\jdk1.5.0_06.
I ran the javac task again, with the 'source' parameter included, as shown
here:
<target name="compile" description="Compile the Java code.">
<javac srcdir="${common.src}" destdir="${common.bin}" compiler="modern"
fork="yes"
verbose="no" debug="on" debuglevel="lines,vars,source" deprecation="yes"
source="1.5"
description="Compile the code in the common package.">
<patternset refid="ps.common"/>
<classpath
path="E:\eclipse\3.0.1\eclipse\workspace\Common\bin\ca\maximal\common\utilities\LocalizationUtils"/>
</javac>
</target>
and again got the error message: javac: invalid source release: 1.5
Why??
I amended the task to add the 'executable' parameter (compiler.path was set
to d:\Program Files\Java\jdk1.5.0_06\bin\javac):
<target name="compile" description="Compile the Java code.">
<javac srcdir="${common.src}" destdir="${common.bin}" compiler="modern"
fork="yes"
verbose="no" debug="on" debuglevel="lines,vars,source" deprecation="yes"
executable="${compiler.path}" source="1.5"
description="Compile the code in the common package.">
<patternset refid="ps.common"/>
<classpath
path="E:\eclipse\3.0.1\eclipse\workspace\Common\bin\ca\maximal\common\utilities\LocalizationUtils"/>
</javac>
</target>
This time my Palette enum compiled fine.
However, I have some followup questions: Why did I have to add the
'executable' parameter to make this work? Shouldn't Ant have seen the
correct compiler by virtue of the fact that I had corrected the JAVA_HOME
environment variable to point to a JDK? I did a 'set' at the command prompt
to verify that the amended JAVA_HOME was indeed visible before doing the
compiles.
For what it's worth, Alexey's caution about the spaces in my JAVA_HOME
(...Program Files...) value struck me as a potential cause of the problem so
I: closed Eclipse; uninstalled the JDK; reinstalled it in D:\Java; changed
JAVA_HOME to D:\Java\jdk1.5.0_06; restarted Eclipse; modified the
compiler.path property to d:\Java\jdk1.5.0_06\bin\javac and ran the build
again.
The result was exactly the same: if I omitted the 'executable' parameter and
used the 'source="1.5"' parameter, I got the 'javac: invalid source release:
1.5' error. If I added 'executable="${compiler.path}", the compile worked
fine.
How do I get the javac task to work _with_ the 'source="1.5"' parameter but
*without* specifying the 'executable' parameter?
Rhino
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