Re: [cc65] Universal Makefile: Some advanced magic wanted?

Hi,

>> After all it's just a proposal.

> And an interesting and tempting one, especially knowing that you can do such stuff with little finger of your left hand ;-) Let me try be more clear now: the answet is "yes, please - only have the two points in head when structuring and commenting it".

Here you go: http://www.pascalschmidt.de/Makefile

Beside the structuring and commenting asked for I added another (and
from my perspective final) "magic" of allowing to save and load the
"abstract" options.

Apart from leveraging Uz' soon-to-come new relative-include-path
semantics this could be the final thing - at least when it's about
making use of "GNU make magic"...

Regards,
Oliver

-------------------------------------------------------------------------------------------

PROGRAM :=
CC65_TARGET :=

SRCDIR :=
OBJDIR :=

CFLAGS  =
ASFLAGS =
LDFLAGS =

EMULATOR := x64
EMUFLAGS = -kernal kernal -VICIIdsize -keymap 1 +autostart-warp
-soundsync 2 -autoload $(PROGRAM)

###############################################################################
### Abstract options and their mapping to cc65 (2.14.x) options             ###
###############################################################################

# Optimize for speed.
define _optspeed_
  CFLAGS += -Oris
endef

# Optimize for size.
define _optsize_
  CFLAGS += -Or
endef

# Generate assembler listings.
define _listing_
  CFLAGS += -l
  REMOVES += $$(SRCDIR)/*.lst
endef

# Generate map file.
define _mapfile_
  LDFLAGS += -m $$@.map
  REMOVES += $$(PROGRAM).map
endef

# Generate VICE label file.
define _labelfile_
  LDFLAGS += -Ln $$@.lbl
  REMOVES += $$(PROGRAM).lbl
endef

### DO NOT EDIT BELOW THIS LINE, UNLESS YOU REALLY KNOW WHAT YOU ARE DOING! ###
###############################################################################
### Defaults to be used if nothing defined above                            ###
###############################################################################

# Presume we're in a project directory so name the program like the current
# directory. Just set PROGRAM to override.
ifeq ($(PROGRAM),)
  PROGRAM := $(notdir $(CURDIR))
endif

# Presume the C64 target like the cl65 compile & link utility does. Just set
# CC65_TARGET to override.
ifeq ($(CC65_TARGET),)
  CC65_TARGET := c64
endif

# Presume the C and asm source files to be located in the subdirectory 'src'.
# Just set SRCDIR to override.
ifeq ($(SRCDIR),)
  SRCDIR := src
endif

# Presume the object and dependency files to be located in the subdirectory
# 'obj' (which will be created). Just set OBJDIR to override.
ifeq ($(OBJDIR),)
  OBJDIR := obj
endif

# On Windows it is mandatory to have CC65_HOME set. So do not unnecessarily
# rely on cl65 being added to the PATH in this scenario.
ifdef $(CC65_HOME)
  CC := $(CC65_HOME)/bin/cl65
else
  CC := cl65
endif

###############################################################################
### The magic begins                                                        ###
###############################################################################

# Set SOURCES to something like 'src/foo.c src/bar.s'.
SOURCES := $(wildcard $(SRCDIR)/*.c)
SOURCES += $(wildcard $(SRCDIR)/*.s)

# Set OBJECTS to something like 'obj/foo.o obj/bar.o'.
OBJECTS := $(addsuffix .o,$(basename $(SOURCES:$(SRCDIR)%=$(OBJDIR)%)))

# Set DEPENDS to something like 'obj/foo.d obj/bar.d'.
DEPENDS := $(OBJECTS:.o=.d)

# Read saved OPTIONS from Makefile.options if none are set so far.
ifeq ($(OPTIONS),)
  -include Makefile.options
  ifneq ($(OPTIONS),)
    $(info Using saved OPTIONS=$(OPTIONS))
  endif
endif

# Transform the abstract OPTIONS to the actual cc65 options.
COMMA := ,
SPACE := $(N/A) $(N/A)
$(foreach o,$(subst $(COMMA),$(SPACE),$(OPTIONS)),$(eval $(_$o_)))

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

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

$(OBJDIR):
	mkdir $@

$(OBJDIR)/%.o: $(SRCDIR)/%.c | $(OBJDIR)
	$(CC) -t $(CC65_TARGET) -c --create-dep $(@:.o=.d) --include-dir
$(SRCDIR) $(CFLAGS) -o $@ $<

$(OBJDIR)/%.o: $(SRCDIR)/%.s | $(OBJDIR)
	$(CC) -t $(CC65_TARGET) -c --create-dep $(@:.o=.d) --asm-include-dir
$(SRCDIR) --asm-args --bin-include-dir,$(SRCDIR) $(ASFLAGS) -o $@ $<

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

test: $(PROGRAM)
	$(EMULATOR) $(EMUFLAGS)

clean:
	rm -f $(OBJECTS) $(DEPENDS) $(PROGRAM) $(REMOVES)
	rmdir $(OBJDIR)

save:
	-@rm -f Makefile.options
	@echo "Saving OPTIONS=$(OPTIONS)"
	@echo "OPTIONS=$(OPTIONS)" > Makefile.options

love:
	@echo "Not war, eh?"
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