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How do I use environment variables in an Eclipse .classpath file?

In Windows I have an environment variable EXTERNAL_LIB_ROOT that points to C:\Program Files\MyExternalLibRoot. On another machine, it may point to C:\ExternalLibs.

In an ant build.xml file I would use:

<pathelement location="${env.EXTERNAL_LIB_ROOT}/path/to/jar.jar"/>

How do I set up an Eclipse project .classpath file to use the EXTERNAL_LIB_ROOT environment variable? Is it possible to have Eclipse auto generate the build.xml file using the environment variable as above?

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user991650 Avatar asked Oct 12 '11 14:10

user991650


1 Answers

Not an environment variable, but you can set up a Path Variable in Eclipse. Path variables are per-workspace. They are therefore a convenient way of sharing a common location among multiple projects within a workspace. I have used them to share a lib folder among projects.

To create a Path Variable (either for the first time, or to re-use an existing one in a project):

  • File / New / Folder
    • Opens the New Folder dialog
  • Click on the Advanced button
  • Select the "Link to folder in the file system" check box
  • Click the Variables button
    • Opens the Select Path Variable dialog
  • Select or create a Path Variable

In your case, create a variable called EXTERNAL_LIB_ROOT.

(BTW, rather than generating a build.xml from your .classpath, I would suggest instead creating .classpath and .project from your build.xml.)

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sudocode Avatar answered Sep 27 '22 21:09

sudocode