This Build view indicates the build dependencies among your files, showing you which files are required to build which other files. Some of these dependencies (blue lines) result from build rules in your makefiles. Others (purple lines) are the result of include statements in your source code.
You can use the view to quickly determine where a given file is included. Using this view in combination with others, you're able to find unnecessary include statements. One application of the Build view is to improve your build process. By understanding the hierarchy of build dependencies, you're able to consider different library and build alternatives. 