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From Paul Gregoire <paul.grego...@hellonetwork.com>
Subject RE: Ant 1.4.1 / JDK 1.4 beta3: '
Date Tue, 04 Dec 2001 23:25:15 GMT
I thought i read "somewhere" that -classic was no longer supported with 1.4;
i noticed these items over at SUN..
 
The javac byte-code compiler has a new -source option that enables support
for compiling source code containing assertions. Also, default compilation
is for -target 1.2. Previously, the default was 1.1. The compiler now
correctly detects unreachable empty statements,
 
and
 
The Java virtual machines in this release include several enhancements. 

Signal-chaining facility. 
64-bit support on SolarisTM-SPARCTM platform edition. 
Error-reporting mechanism. 
New facility for logging garbage-collection events. 
The Classic virtual machine is no longer shipped as part of the Java 2 SDK. 

-----Original Message-----
From: Sebastien Boving [mailto:sebastien@cirquedigital.com]
Sent: Tuesday, December 04, 2001 2:41 PM
To: ant-user@jakarta.apache.org
Subject: Re: Ant 1.4.1 / JDK 1.4 beta3: '


  
Some more on this 'Modern compiler is not available / Cannot use classic
compiler' problem: 

I've been trying Ant 1.4, and JDK 1.3.1_01, local installations iso having
these reside on a SMB server: always the same problem. 
I do set JAVA_HOME properly, and setting CLASSPATH to tools.jar doesn't help
either. Building using a minimal build file still gives me the error
message. 


If i run 'ant -debug', i do get tools.jar in 'java.class.path'. 


There must be something very basic that's wrong (some other environment in
this machine / ...) on this Win2k machine. 


tia, 
Sebastien. 
  


Sebastien Boving wrote: 


Hi, 

I'm having problems getting Ant 1.4.1 to work with JDK 1.4 beta3. 
I get the 'Cannot use classic compiler' error: 


[seb@ART002001] 150 # ant compile 
Buildfile: build.xml 


init: 


compile: 
    [javac] Modern compiler is not available - using classic compiler 
    [javac] Compiling 11 source files to H:\dev\java\obj 


BUILD FAILED 


H:\dev\java\build.xml:14: Cannot use classic compiler, as it is not
available A common solution is to set the environment variable JAVA_HOME to
your jdk directory. 


Total time: 3 seconds 
Exit 1 
  


I looked this up in the archives, and it seems other people had this
problem, but the solution was always adding tools.jar to the classpath (or
setting up JAVA_HOME correctly). I however think these things are fine, and
running ant in debug mode seems to confirm this: 


Mon 03/12/01 18:55 H:/dev/java 
[seb@ART002001] 151 # ant -debug compile |& less 
Ant version 1.4 compiled on September 3 2001 
Buildfile: build.xml 
Setting project property: ant.java.version -> 1.4 
Detected Java version: 1.4 in: s:\soft\win-ix86\j2sdk\1.4.0b3\jre 
Detected OS: Windows 2000 
 +User task: tar     org.apache.tools.ant.taskdefs.Tar 
 +User task: fail     org.apache.tools.ant.taskdefs.Exit 
[...] 
Setting project property: java.specification.version -> 1.4 
Setting project property: java.class.path ->
s:\soft\common\ant\1.4.1\lib\optional.jar;s:\soft\common\ant\1.4.1\lib\jaxp.
jar;s:\soft\common\ant\1.4.1\lib\crimson.jar;s:\soft\common\ant\1.4.1\lib\an
t.jar;s:\soft\win-ix86\j2sdk\1.4.0b3\lib;s:\soft\win-ix86\j2sdk\1.4.0b3\lib\
tools.jar;s:\soft\win-ix86\j2sdk\1.4.0b3\lib\tools.jar 
Setting project property: user.name -> seb 
Setting project property: java.vm.specification.version -> 1.0 
Setting project property: java.home -> s:\soft\win-ix86\j2sdk\1.4.0b3\jre 
[...] 


BUILD FAILED 


H:\dev\java\build.xml:14: Cannot use classic compiler, as it is not
available A common solution is to set the environment variable JAVA_HOME to
your jdk directory. 
        at
org.apache.tools.ant.taskdefs.compilers.Javac12.execute(Javac12.java:96) 
        at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:530) 
        at org.apache.tools.ant.Task.perform(Task.java:217) 
        at org.apache.tools.ant.Target.execute(Target.java:164) 
        at org.apache.tools.ant.Target.performTasks(Target.java:182) 
        at org.apache.tools.ant.Project.executeTarget(Project.java:601) 
        at org.apache.tools.ant.Project.executeTargets(Project.java:560) 
        at org.apache.tools.ant.Main.runBuild(Main.java:454) 
        at org.apache.tools.ant.Main.start(Main.java:153) 
        at org.apache.tools.ant.Main.main(Main.java:176) 


(Note the java.class.path). This happens though: 


Mon 03/12/01 18:57 H:/dev/java 
[seb@ART002001] 152 # ls -l s:/soft/win-ix86/j2sdk/1.4.0b3/lib/tools.jar 
-rw-r--r--   1 administ None      4822168 Dec  3 14:44
s:/soft/win-ix86/j2sdk/1.4.0b3/lib/tools.jar 


Mon 03/12/01 18:58 H:/dev/java 
[seb@ART002001] 154 # jar tvf s:/soft/win-ix86/j2sdk/1.4.0b3/lib/tools.jar
sun/tools/javac/Main.class 
 13253 Sat Oct 20 01:16:08 PDT 2001 sun/tools/javac/Main.class 


So i don't really understand what's wrong here, unless Ant 1.4.1 has an
issue with the Sun 1.4 beta 3 SDK? 


Any help would be appreciated! 


Sebastien. 
 


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