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GNU Info (make.info)Implicit/SearchDirectory Search and Implicit Rules ----------------------------------- The search through the directories specified in `VPATH' or with `vpath' also happens during consideration of implicit rules (Note: Using Implicit Rules.). For example, when a file `foo.o' has no explicit rule, `make' considers implicit rules, such as the built-in rule to compile `foo.c' if that file exists. If such a file is lacking in the current directory, the appropriate directories are searched for it. If `foo.c' exists (or is mentioned in the makefile) in any of the directories, the implicit rule for C compilation is applied. The commands of implicit rules normally use automatic variables as a matter of necessity; consequently they will use the file names found by directory search with no extra effort. automatically generated by info2www version 1.2.2.9 |