Makefile (Auto-Dependency Generation)

by

Newer versions of GCC have an -MP option which can be used with -MD. I simply added -MP and -MD to the CPPFLAGS variable for my project (I did not write a custom recipe for compiling C++) and added an “-include $(SRC:.cpp=.d)” line.

Using -MD and -MP gives a dependency file which includes both the dependencies (without having to use some weird sed) and dummy targets (so that deleting header files will not cause errors).

More Related Contents:

  1. Passing additional variables from command line to make
  2. GNU make yields “commands commence before first target” error
  3. Why .SECONDARY does not work with patterns (%) while .PRECIOUS does?
  4. What is the purpose of .PHONY in a Makefile?
  5. Creating Makefile with libraries
  6. Recursive wildcards in GNU make?
  7. Can GNU make handle filenames with spaces?
  8. Passing arguments to “make run”
  9. How can I have a Makefile automatically rebuild source files that include a modified header file? (In C/C++)
  10. How does “make” app know default target to build if no target is specified?
  11. Getting make to create object files in a specific directory
  12. How to use all *.c files in a directory with the Cmake build system?
  13. crti.o file missing
  14. How to use LDFLAGS in makefile
  15. How do you get the list of targets in a makefile?
  16. “multiple target patterns” Makefile error
  17. How do I check if file exists in Makefile so I can delete it?
  18. How to ensure a target is run before all the other build rules in a makefile?
  19. Makefile variable assignment error in echo
  20. How do I write the ‘cd’ command in a makefile?
  21. How can I configure my makefile for debug and release builds?
  22. Run make in each subdirectory
  23. CFLAGS vs CPPFLAGS
  24. Wildcard targets in a Makefile
  25. How do I perform arithmetic in a makefile?
  26. Suppress make rule error output
  27. Create a variable in a makefile by reading contents of another file
  28. Why are .PHONY implicit pattern rules not triggered?
  29. Force gnu make to rebuild objects affected by compiler definition
  30. tar: file changed as we read it

Leave a Comment