### -*- Makefile -*- for Unix Jitter 
###
### Author: Ian.Piumarta@inria.fr
###
### Last edited: Thu Feb 25 20:56:08 1999 by piumarta (Ian Piumarta) on pingu

### To build, type "make" followed by ONE or zero ("opt" is the default) of these:
#
# opt	 - standalone optimised Jitter (functions inlined, frame pointer
#	   omitted, compiler optimisations enabled)
# 
# dbg	 - standalone debuggable Jitter (functions not inlined in compiler,
#	   frame pointer preserved, no compiler optimisations)
# 
# optint - integrated optimised Jitter (then do "make j2" in the Squeak directory)
#
# dbgint - integrated debuggable Jitter (then do "make j2" in the Squeak directory)
# 
###

## the name of the Jitter module...

MODNAME:=	squeakCompiler

## the name of the default target: "dbg", "dbgint", "opt" or "optint"...

default:	j2opt

## path to the Squeak distribution...

SQUEAK:=	../2.3

## path to the world's best compiler...

CXX:=		/usr/egcs/bin/g++
#CXX:=		g++

## flags for everybody...

CXXFLAGS+=	-Wall -Wno-unused -Wno-pointer-arith -gstabs+ -fno-exceptions
DBGFLAGS+=	-fno-inline-functions
OPTFLAGS+=	-O9 -DNDEBUG
LDFLAGS+=	-g -r
SHFLAGS+=	-g -rdynamic -shared

## platform specifics...

UTSMAC:=	$(patsubst i%86,i386,$(shell uname -m))

ifeq ($(UTSMAC),i386)
OPTFLAGS+=	-fomit-frame-pointer
OPTFLAGS+=	-malign-loops=2 -malign-jumps=3 -malign-functions=2
endif

ifeq ($(UTSMAC),ppc)
OPTFLAGS+=	-fno-cse-follow-jumps
MODFLAGS:=	-fpic
endif

## some handy stuff that we generate and/or snarf from Squeak...

SQCAT:=		$(SQUEAK)/util/sqcat
SQHDR:=		sqVirtualMachine.h sq.h
SQPRIMDECL:=	primitiveTable.decl
SQPRIMDEFN:=	primitiveTable.defn

## minimal set of files required to build the Jitter module

MODSRC:=	module.cc

## set of files required to build the Jitter itself

JITSRC:=	$(filter-out $(MODSRC), $(wildcard *.cc))

MODOBJ:=	$(MODSRC:.cc=.o)
JITOBJ:=	$(JITSRC:.cc=.o)
HDR:=		$(wildcard *.h)
JIT:=		$(MODNAME).o
MOD:=		$(MODNAME).so

DEPDIR:=	dep
DEPENDENCIES:=	$(addprefix $(DEPDIR)/, $(MODSRC)) $(addprefix $(DEPDIR)/, $(JITSRC))

CXXFLAGS+=	$(OPTFLAGS) $(JITFLAGS)

## top-level targets...

# Jitter included in standalone module

dbg:
	$(MAKE) OPTFLAGS="$(DBGFLAGS)" MODOBJ="$(MODOBJ) $(JIT)" JITFLAGS=$(MODFLAGS) all

opt:
	$(MAKE) MODOBJ="$(MODOBJ) $(JIT)" JITFLAGS=$(MODFLAGS) all

# Jitter integrated into Squeak VM

dbgint:
	$(MAKE) OPTFLAGS="$(DBGFLAGS)" all

optint:
	$(MAKE) all

dbgspy:
	$(MAKE) OPTFLAGS="$(DBGFLAGS) -DSPY" all

optspy:
	$(MAKE) OPTFLAGS="$(OPFLAGS) -DSPY" all

## internal targets, not for casual use....

all:		$(JIT) $(MOD)

$(MOD):		$(MODOBJ)
		$(CXX) $(SHFLAGS) -o $@ $(MODOBJ)

$(JIT):		$(JITOBJ)
		$(LD) $(LDFLAGS) -o $@ $(JITOBJ)

module.o:	module.cc
		$(CXX) $(CXXFLAGS) $(MODFLAGS) -c $<

version.h::
		./verstamp $@ `cat VERSION` $(CXX)

$(SQHDR):
		ln -sf $(SQUEAK)/src/$@ .

$(SQPRIMDECL):	$(SQUEAK)/$(SQPRIMDECL)
		$(SQCAT) $< > $@

$(SQPRIMDEFN):	$(SQUEAK)/$(SQPRIMDEFN)
		$(SQCAT) $< > $@

vm.h:		$(SQUEAK)/interp.c
		$(SQCAT) $< | ./mkvmh > $@

## housekeeping...

tidy:
		-/bin/rm -f *.o *~ core a.out main

clean:		tidy
		/bin/rm -rf $(SQHDR) $(DEPDIR)

spotless:	clean
		/bin/rm -f $(MOD) $(LIB)

## remake the lot if the Makefile changes
#
#$(JITOBJ) $(MODOBJ): GNUmakefile

## dependencies...

dep/.stamp:
		mkdir dep
		touch dep/.stamp

dep/%.cc:	%.cc dep/.stamp $(SQHDR) $(SQPRIMDECL) $(SQPRIMDEFN)
		$(CXX) $(CXXFLAGS) -DEPEND -MM $< > $@

include $(DEPENDENCIES)

## these are for the benefit of Jitter hackers, and can safely be ignored...

j2:		dbgint
		$(MAKE) -C $(SQUEAK) j2

j2opt:		optint
		$(MAKE) -C $(SQUEAK) j2

j2spy:		dbgspy
		$(MAKE) -C $(SQUEAK) j2

j2optspy:	optspy
		$(MAKE) -C $(SQUEAK) j2