Re: [cc65] Please critique this makefile

On 2010-04-23, at 00:04, Oliver Schmidt wrote:

> Hi,
>
>> http://www.pascalschmidt.de/cc65/Makefile

First of all - thanks a lot for that! I checked and it seems to be  
working already quite well.

>
> Now that I understand how to use cl65 the right way I changed the
> Makefile to do so thus turning it somewhat cleaner.
>
> [...]
>
> - When using cl65 for compiling it seemed cleaner to use it as well
> for assembling and linking.

So the first trick I never tried (I guess I didn't even notice that  
"Compile & Link" utility can be used as "Compile & Assemble Only" one)  
is to use cl65 rather than cc65/ca65, which makes it easier for the  
start.

I added conditionals below so that default values are supplied instead  
of failing when some variables are not defined. Target choice is  
following the defaults of cc65 utilities.

Few comments:

- currently the objects get re-linked every time, even if no changes  
were made
- using the cl65 instead of cc65/ca65 can (AFAIR) impose some  
limitations. I don't recall now what those are but if the same could  
be achieved with the cc/ca combo, then people could easier adapt the  
process using full power of the tools. The question - is that feasible?


**********************************************************
PROGRAM := foobar

SOURCEDIR := src
OBJECTDIR := obj

CFLAGS  :=
ASFLAGS :=
LDFLAGS :=

################################################################################
ifdef $(CC65_HOME)
CC := $(CC65_HOME)/bin/cl65
else
CC := cl65
endif

ifndef $(CC65_TARGET)
CC65_TARGET := c64
endif

SOURCES := $(wildcard $(SOURCEDIR)/*.c)
DEPENDS := $(addsuffix .d,$(basename $(addprefix $(OBJECTDIR)/,$ 
(notdir $(SOURCES)))))
SOURCES += $(wildcard $(SOURCEDIR)/*.s)
OBJECTS := $(addsuffix .o,$(basename $(addprefix $(OBJECTDIR)/,$ 
(notdir $(SOURCES)))))

.SUFFIXES:
.PHONY: all clean
all: $(PROGRAM)

ifneq ($(MAKECMDGOALS),clean)
-include $(DEPENDS)
endif

$(OBJECTDIR):
	mkdir $@

$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.c | $(OBJECTDIR)
	$(CC) -t $(CC65_TARGET) -I $(SOURCEDIR) $(CFLAGS) --create-dep -c -o  
$@ $<
	@sed -e"s!$(<:.c=.s)!$@!p" -e"s![^\t]*\t\(.*\)!\1:!" < $(<:.c=.u) > $ 
(@:.o=.d)
	@rm -f $(<:.c=.u)

$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.s | $(OBJECTDIR)
	$(CC) -t $(CC65_TARGET) -I $(SOURCEDIR) $(ASFLAGS) -c -o $@ $<

$(PROGRAM): $(OBJECTS)
	$(CC) -t $(CC65_TARGET) $(LDFLAGS) -o $@ -m $@.map $^

clean:
	rm -f $(OBJECTS) $(DEPENDS) $(PROGRAM) $(PROGRAM).map
	rmdir $(OBJECTDIR)
-- 
SD!

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