Autosave before building

The IDE automatically saves all changed resources before you do a manual build.
To disable the auto-save feature:
  1. From the main menu, select Window > Preferences.
  2. In the left pane, expand General, then select Workspace.

  3. In the right pane, disable the Save automatically before build option.
  4. Click OK to save and apply your preferences.
The IDE no longer saves your resources before it builds your project.