question about makefile

hexagon5un / AVR-Programming

Code examples for the book "Make: AVR Programming"

http://littlehacks.org/AVR-Programming

MIT License

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question about makefile #45

Open xralphack opened 4 years ago

xralphack commented 4 years ago

%.o: %.c $(HEADERS) Makefile

This line means each object file has dependencies on .c file and all header file and Makefile However in each project, each .c file did not have corresponding header file For example blankLED project did not have blankLED.h file So how to explain about this?