A little background first. I've been using Maven even before the 1.0 release, and have been very happy with it. I've created very complex builds and have a very good working knowledge of Maven 1.x. The structure I describe below, is precisely how I've successfully built projects with Maven 1.x countless times.
I'm starting a whole new project, and would like to see if Maven 2 is going to be something I want to use. Now on to my problem. Maven 2 cannot find the Javac Compiler that I believe I pointed it to. I'm running the latest Maven download, version 2.0, on Windows XP I've created two project modules : csi_build csi_common csi_common contains my first simple project I'd like to build with Maven 2 csi_build contains my Maven 2 binaries, AND a number of JDKs I use for builds. I store my JDKs in version control (Subversion), as some deployments require different versions of the JDK and because I want anyone to be able to pull down the latest code from the repository and immediately be able to execute a build, even if they don't have the JDK installed. I simply go to the csi_common directory and execute the following build.batfile =============================================== echo off set JAVA_HOME=C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\jdk\jdk1.5.0_04 set MAVEN_HOME=C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\maven\maven-2.0 set PATH=%JAVA_HOME%\bin;%MAVEN_HOME%\bin;%PATH% echo PATH=%PATH% mvn package -e =============================================== Here's my simple pom.xml for csi_common =============================================== <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd";> <modelVersion>4.0.0</modelVersion> <groupId>com.csi.common</groupId> <artifactId>csi_common</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <name>Maven Quick Start Archetype</name> <url>http://maven.apache.org</url> <build> <sourceDirectory>src/java</sourceDirectory> </build> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> </project> =============================================== The output complains "Unable to locate the Javac Compiler in: C:\jre1.5.0_04\..\lib\tools.jar" Here's the output: =============================================== C:\CSI\eclipse_workspaces\CSI\csi_common>echo off PATH=C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\jdk\jdk1.5.0_04\bin; C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\maven\maven-2.0\bin; C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] ---------------------------------------------------------------------------- [INFO] Building Maven Quick Start Archetype [INFO] task-segment: [package] [INFO] ---------------------------------------------------------------------------- [INFO] [resources:resources] [INFO] Using default encoding to copy filtered resources. [INFO] [compiler:compile] Compiling 4 source files to C:\CSI\eclipse_workspaces\CSI\csi_common\target\classes [INFO] ---------------------------------------------------------------------------- [ERROR] BUILD FAILURE [INFO] ---------------------------------------------------------------------------- [INFO] Compilation failure Unable to locate the Javac Compiler in: C:\jre1.5.0_04\..\lib\tools.jar Please ensure you are using JDK 1.4 or above and not a JRE (the com.sun.tools.javac.Main class is required). In most cases you can change the location of your Java installation by setting the JAVA_HOME environment variable. [INFO] ---------------------------------------------------------------------------- [INFO] Trace org.apache.maven.BuildFailureException: Compilation failure at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals( DefaultLifecycleExecutor.java:540) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle (DefaultLifecycleExecutor.java:469) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal( DefaultLifecycleExecutor.java:448) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures (DefaultLifecycleExecutor.java:301) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments( DefaultLifecycleExecutor.java:268) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute( DefaultLifecycleExecutor.java:137) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:113) at org.apache.maven.cli.MavenCli.main(MavenCli.java:249) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure at org.apache.maven.plugin.AbstractCompilerMojo.execute( AbstractCompilerMojo.java:429) at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:110) at org.apache.maven.plugin.DefaultPluginManager.executeMojo( DefaultPluginManager.java:399) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals( DefaultLifecycleExecutor.java:519) ... 16 more [INFO] ---------------------------------------------------------------------------- [INFO] Total time: 1 second [INFO] Finished at: Fri Dec 02 08:50:54 CST 2005 [INFO] Final Memory: 3M/6M [INFO] ---------------------------------------------------------------------------- =============================================== Why in the world is the Maven code looking for anything in C:\jre1.5.0_04 ??? if I issue "set JAVA_HOME" from the command line, I get: =============================================== C:\CSI\eclipse_workspaces\CSI\csi_common>set JAVA_HOME JAVA_HOME=C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\jdk\jdk1.5.0_04 =============================================== and here's my path: =============================================== C:\CSI\eclipse_workspaces\CSI\csi_common>set PATH Path=C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\jdk\jdk1.5.0_04\bin; C:\CSI\eclipse_workspaces\CSI\csi_build\src\tools\maven\maven-2.0\bin; C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem =============================================== Also, if I issue "javac" from the command line, I get: =============================================== C:\CSI\eclipse_workspaces\CSI\csi_common>javac Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files -cp <path> Specify where to find user class files -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -endorseddirs <dirs> Override location of endorsed standards path -d <directory> Specify where to place generated class files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -version Version information -help Print a synopsis of standard options -X Print a synopsis of nonstandard options -J<flag> Pass <flag> directly to the runtime system =============================================== So, I KNOW javac is in the path. Can anyone shed some light on what I may be doing wrong? Sincerely, Matthew Wheaton
