Setting the Maven library variable M2_REPO in Eclipse
This page describes how to set the Maven library variable M2_REPO in Eclipse, which is required if you have set up the build path for a deegree 3 module using Maven.
1. Changing the preferences
After you have checked out from svn you may probably see your deegree module (in that case it's deegree-core) with compilation errors as in the screenshot below.
SettingMavenVariableInEclipse/maven_screen_1.png "maven_screenshot_1")
Follow the steps: Window -> Preferences
2. Setting the classpath variable
In: Java -> Build Path -> Classpath Variable
click in the New...-button
SettingMavenVariableInEclipse/maven_screen_2.png "maven_screenshot_2")
Type in M2_REPO and press the Folder...-button
SettingMavenVariableInEclipse/maven_screen_3.png "maven_screen_3.png")
to locate the folder where your local maven repository is stored.
On UNIX this is: ~/.m2/repository,
On Windows: %USERPROFILE%\.m2\repository (Depending on your Windows version, %USERPROFILE% points to something like C:\Documents and Settings\<username> or C:\Users\<username>)
The screenshot below shows the correct input for a UNIX environment ($USER$ needs to be exchanged with your actual user name).
SettingMavenVariableInEclipse/maven_screen_4.png "maven_screen_4.png")
3. Finishing the work
After that the work is done and you see
SettingMavenVariableInEclipse/maven_screen_5.png "maven_screenshot_5")
everything is fine with regard to the M2_REPO variable. Press Yes
SettingMavenVariableInEclipse/maven_screen_6.png "maven_screen_6.png")
and Eclipse will rebuild the workspace... this may take some seconds.
SettingMavenVariableInEclipse/maven_screen_7.png "maven_screen_7.png")
If you experience that Eclipse doesn't seem to build correctly, you may need to select "Project" -> "Clean" or "Project" -> "Build Project" manually.