phony targets and dependency files (*.d)

[Alan Fitch]

Dear Help-make, 
              I've got a make file which uses phony targets, and the
dependency creating files as described in info make.

Here is the file, it contains a Makefile, which includes a
Makefile.defs, as well as the dependency (*.d) files.

The problem is that the phony target ultraclean, always insists on
creating the *.d files if they don't exist.

I'm using gnu make 3.78.1 on Redhat 6.2 and Solaris 2.7 (behaviour is
the same on both operating systems).

In other words, if I say

make
make clean
make clean

it's fine, but if I say

make
make ultraclean
make ultraclean

it insists on re-creating the *.d files and then deleting them on the
second run of make ultraclean.

kind regards

Alan

(P.S. Some lines have got wrapped below)



Here's the makefile
===================

EXTRACFLAGS =
EXTRA_LIBS =
MODULE = run
SRCS = ram.cpp sorter.cpp main.cpp
 
OBJS = $(SRCS:.cpp=.o)
 
include ../Makefile.defs



Here's ../Makefile.defs
=======================

SYSTEMC = /apps/systemc

CC     = g++
OPT    = -O0
DEBUG  = -g

SYSDIR = -I$(SYSTEMC)/include -I$(SYSTEMC)/src

INCDIR = -I. -I.. $(SYSDIR)
LIBDIR = -L. -L.. -L$(SYSTEMC)/lib-$(TARGET_ARCH)


## Build with maximum gcc warning level
CFLAGS = -Wall $(DEBUG) $(OPT) $(EXTRACFLAGS)

LIBS   =  -lsystemc -lstdc++ -lm $(EXTRA_LIBS)

EXE    = $(MODULE).x

.SUFFIXES: .cc .cpp .o .x .d

.PHONY: clean ultraclean

%.d:%.cpp
        set -e; $(CC) $(CFLAGS) $(INCDIR)  -MM $< \
                                        | sed 's/\($*\)\.o[ :]*/\1.o $@
: /g' >
$@; \
                                        [ -s $@ ] || rm -f $@
 
$(EXE): $(OBJS) $(SYSTEMC)/lib-$(TARGET_ARCH)/libsystemc.a
        $(CC) $(CFLAGS) $(INCDIR) $(LIBDIR) -o $@ $(OBJS) $(LIBS) 2>&1 |
c++filt 
.cpp.o:
        $(CC) $(CFLAGS) $(INCDIR)  -c $<
 
.cc.o:
        $(CC) $(CFLAGS) $(INCDIR)  -c $<
 
clean:
        rm -f $(OBJS) *~ $(EXE) *.vcd *.wif *.isdb *.dmp
 
ultraclean: clean
        rm -f *.d
 
include $(SRCS:.cpp=.d)  
-- 
Alan Fitch
DOULOS Ltd.
Church Hatch, 22 Market Place, Ringwood, Hampshire BH24 1AW, United Kingdom
Tel: +44 1425 471223                           Email: address@hidden
Fax: +44 1425 471573                             Web: http://www.doulos.com

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