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Pattern rules without commands, does it make sense?
From: |
Leeuwesteijn,Joost |
Subject: |
Pattern rules without commands, does it make sense? |
Date: |
Wed, 3 May 2006 11:08:37 +0200 |
Hi *,
>From chapter "Implicit Rule Search Algorithm":
"4. Remove from the list all rules with no commands."
Just to be sure: are pattern rules without commands totally useless?
I expected them to be 'incremental', just like normal rules. Normal rules
also continue when there are no commands. Like so:
-------------------
foo%.o : bar%.c
# no commands here
%.o : %.c
@(COMPILE_AWAY)
-------------------
Is the first rule useless? I expected (was hoping for):
- if the first rule matches (e.g. foo1.o,bar1.c) ->
there's no rule, continue with the matched data because not finished yet
- foo1.o,bar1.c also matches %.o:%.c ->
this one does have commands -> compile
Instead I get "make: *** No rule to make target" :-(
--
Joost Leeuwesteijn
- Pattern rules without commands, does it make sense?,
Leeuwesteijn,Joost <=