Xref: news2.mv.net comp.os.msdos.djgpp:4356
From: Roland Exler <R DOT Exler AT jk DOT uni-linz DOT ac DOT at>
Newsgroups: comp.os.msdos.djgpp
Subject: make deletes files needed?!
Date: Wed, 29 May 1996 14:43:30 -0700
Organization: Institute for el. Measurement, University of Linz, Austria
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Message-ID: <31ACC502.75AE@jk.uni-linz.ac.at>
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I'm using gnu make (v3.73) as a kind of intelligent batch-file, not just 
for compiling c/c++. With the makefile below, make deletes the files 
lms0* at the end of the run, but this files are listed in 'lms' as 
desinations to create! Especially surprising is the fact, that make 
deletes it, but knows it has to create this files as if you run make 
again, it recompiles them.

Has anyone encountered similar problems with make or sees an error within 
my makefile?

I've cut the makefile to the minimum and replaced the real functions with 
ECHO-statements using output-redirection just creating dummi-files.

As manually undeleting all files costs a lot of time and recompilation 
even more (the real makefile runs more than one hour at a P100), thanks 
in advance for any help.

Roland

--------------------------- makefile --------------------------------
OUT_DIR:=test/
Z=$(subst /,\,$@)

# may be list, such as 
#LMSPARAM:=050 020 010
LMSPARAM:=050

LMS_ERR:=$(addprefix lmse,$(LMSPARAM)) $(addprefix lmss,$(LMSPARAM))

..PHONY: all lms clear

all: $(OUT_DIR)s_in $(OUT_DIR)n_in \
     $(OUT_DIR)s_out $(OUT_DIR)n_out \
     lms

lms: $(addprefix $(OUT_DIR),$(LMS_ERR))

clear:
	deltree /y $(subst /,,$(OUT_DIR))
	del signal
	del noise

# how to create file 'signal' and 'noise'
signal noise:
	ECHO noise $@ > $Z

$(OUT_DIR)s_in: signal
	md $(subst /,,$(dir $@))
	ECHO mult $< -a $@ > $Z

$(OUT_DIR)n_in: noise
	md $(subst /,,$(dir $@))
	ECHO mult $< -a $@ > $Z

%_out: %_in
	ECHO fir $< -c $@ > $Z

$(OUT_DIR)out: $(OUT_DIR)s_out $(OUT_DIR)n_out
	ECHO add $^ $@ > $Z

$(OUT_DIR)lmse0%: $(OUT_DIR)s_in $(OUT_DIR)out
	ECHO lms $^ -c $@ > $Z

$(OUT_DIR)lmss0%: $(OUT_DIR)n_out $(OUT_DIR)lmse0%
	ECHO sub $^ $@ > $Z


+---------------------------------------+---------------------------+
I Roland Exler                          I EMAIL:                    I
I Universitaet Linz                     I R DOT Exler AT jk DOT uni-linz DOT ac DOT at I
I Institut fuer Elektrische Messtechnik I                           I
I Altenbergerstr. 69                    I Phone:                    I
I A-4040 Linz, AUSTRIA                  I + 43 732 2468 9205        I
+---------------------------------------+---------------------------+