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Re: Fed up with pattern rules ( make 3.79.1 on Redhat 8 Linux )
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From: |
Paul D. Smith |
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Subject: |
Re: Fed up with pattern rules ( make 3.79.1 on Redhat 8 Linux ) |
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Date: |
25 Jun 2004 08:08:55 -0400 |
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User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 |
%% a_gilotra@yahoo.com (funtoosh) writes:
f> $(DIROBJ)/$(PLATFORM)/%.o: %.c
f> @echo "running via pattern rule"
f> make target
f> make: *** No rule to make target `obj/linux/a.o', needed by `run'.
f> Stop.
It looks to me like the file "a.c" doesn't exist. A pattern rule only
matches if make can determine how to build all the prerequisites.
If you can't figure it out use "make -d" and see why make is rejecting
the pattern rule.
f> man page of makefile is nicely written but somehow doesnt answer why
f> the above error ?
Do you mean info page? The man page for GNU make is not much.
PS. Creating directories the way you're doing it is not a good idea. If
you were to ever want to enable parallel builds, for example, it
could break.
--
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Paul D. Smith <psmith@gnu.org> Find some GNU make tips at:
http://www.gnu.org http://make.paulandlesley.org
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist