Directory Search (GNU make)

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4.5 Searching Directories for Prerequisites

For large systems, it is often desirable to put sources in a separate directory from the binaries. The directory search features of make facilitate this by searching several directories automatically to find a prerequisite. When you redistribute the files among directories, you do not need to change the individual rules, just the search paths.

• General Search		Specifying a search path that applies to every prerequisite.
• Selective Search		Specifying a search path for a specified class of names.
• Search Algorithm		When and how search paths are applied.
• Recipes/Search		How to write recipes that work together with search paths.
• Implicit/Search		How search paths affect implicit rules.
• Libraries/Search		Directory search for link libraries.