[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: VPATH/vpath and Pattern Rules
From: |
Paul Smith |
Subject: |
Re: VPATH/vpath and Pattern Rules |
Date: |
Sat, 14 Jan 2012 09:09:57 -0500 |
On Sat, 2012-01-14 at 13:46 +0100, Michael Ludwig wrote:
> How can you convince Make to honour the VPATH/vpath when using a Pattern
> Rule defined in my Makefile (as opposed to the built-in pattern rule)?
It does already: no need for convincing.
> # Pattern Rule
> %.o: %.cpp
> $(COMPILE.cc) $*.cpp -o $*.o
This is not right. The $* variable matches the stem of the pattern.
The stem of the pattern here is something like "Employee", the stem is
NOT "emp/Employee". You can see this easily be changing your rule to
print out the values of the various automatic variables.
If you want this to work you need to use the $@ and $< variables, like
so:
%.o: %.cpp
$(COMPILE.cc) $< -o $@
Hope this helps...
--
-------------------------------------------------------------------------------
Paul D. Smith <address@hidden> Find some GNU make tips at:
http://www.gnu.org http://make.mad-scientist.net
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist