[Building Sakai] not able to build sakai with eclipse

[mahtab singh]

I am facing the following error while building Sakai with eclipse, please
suggest..

Following are the logs:

9/3/09 2:24:48 PM IST: [INFO] Using default encoding to copy filtered
resources.
9/3/09 2:24:48 PM IST: Build errors for sakai-comp-help;
org.apache.maven.lifecycle.LifecycleExecutionException: Missing:
----------
1) com.sun:tools:jar:1.5.0

  Try downloading the file manually from the project website.

  Then, install it using the command:
      mvn install:install-file -DgroupId=com.sun -DartifactId=tools
-Dversion=1.5.0 -Dpackaging=jar -Dfile=/path/to/file

  Alternatively, if you host your own repository you can deploy the file
there:
      mvn deploy:deploy-file -DgroupId=com.sun -DartifactId=tools
-Dversion=1.5.0 -Dpackaging=jar -Dfile=/path/to/file -Durl=[url]
-DrepositoryId=[id]

  Path to dependency:
      1) org.sakaiproject:sakai-comp-help:sakai-component:2.7.0-SNAPSHOT
      2) org.sakaiproject.kernel:sakai-component-manager:jar:1.1-SNAPSHOT
      3) com.sun:tools:jar:1.5.0

----------
1 required artifact is missing.

for artifact:
  org.sakaiproject:sakai-comp-help:sakai-component:2.7.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  sakai-maven2-snapshots (http://source.sakaiproject.org/maven2-snapshots),
  apache-repo (http://myfaces.zones.apache.org/dist/maven-repository),
  sakai-ibiblio-mirror (http://source.sakaiproject.org/maven2-ibiblio),
  default (http://repo1.maven.org/maven2),
  sakai-maven (http://source.sakaiproject.org/maven2)


thanks in advance :)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://collab.sakaiproject.org/pipermail/sakai-dev/attachments/20090903/142b198e/attachment.html