The file portal-impl/src/system-ext.properties will be generated after ant all on master.

• Type: Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.0.0 M3
• Fix Version/s: 7.0.0 M7
• Component/s: Portal Services, Portal Services > Component Management, Portal Services > Component Management > Hot Deployment
• Labels:
  • INACTIVE
• Story Points: 6
• Git Pull Request: https://github.com/migue/liferay-portal/pull/212

ISSUE
After we execute "ant all" once, the file "system-ext.properties" will be generated automatically. It has defined "liferay.lib.portal.dir" in it. If we move the bundle to another path, we need to change the property.
The file is in the list of ".gitignore", it will be still existed after we execute "ant clean". When we check out another branch in the same repository, the file will be also added to the new bundle which we usually put in a different path.
There is a problem we normally encounter:
The property will be also used when we deploy plugins. Most of portlets are depended on JSTL, "jstl-impl.jar" and "jstl-api.jar" will not be found if we use a wrong path. Some tickets are involved in this issue: LPS-42508, LPS-42509, LPS-43112, LPS-43360, LPS-43630.