Matthew Knepley knepley at
Fri Feb 17 14:06:29 CST 2006

billy at writes:

> I am new to PETSc, so I don't really know how it works.
> I added this line to my makefile:
> include $(PETSC_DIR)/bmake/common/base
> but I had a target named 'clean' defined. Now, when I run my makefile it says:
> ... ignoring old commands for target 'clean'
> Does PETSc also define a target named 'clean'? If yes, what does it do?

  It does define 'clean' to cleanup up after compilation. You could change the name
of your target if you need it. I will look at changing it in an up coming release.

"Failure has a thousand explanations. Success doesn't need one" -- Sir Alec Guiness

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