Removing Build Automatically

# Disabling the Build Automatically option

By default, the Eclipse workbench is configured to build projects automatically. However, for C/C++ development you should disable this option, otherwise your entire project will be rebuilt whenever, for example, you save a change to your makefile or source files. Click Project > Build Automatically and ensure there is no checkmark beside the Build Automatically menu item.

Build overview

Building Manually
Defining Project Build settings
Building projects

Make Builder page, C/C++ Properties window