# The main Makefile

include config/Makefile

CAMLC=boot/ocamlrun boot/ocamlc -I boot
CAMLOPT=boot/ocamlrun ./ocamlopt -I stdlib
COMPFLAGS=$(INCLUDES)
LINKFLAGS=
CAMLYACC=boot/ocamlyacc
YACCFLAGS=
CAMLLEX=boot/ocamlrun boot/ocamllex
CAMLDEP=boot/ocamlrun tools/ocamldep
DEPFLAGS=$(INCLUDES)
CAMLRUN=byterun/ocamlrun
SHELL=/bin/sh

INCLUDES=-I utils -I parsing -I typing -I bytecomp -I asmcomp -I driver -I toplevel

UTILS=utils/misc.cmo utils/tbl.cmo utils/config.cmo \
  utils/clflags.cmo utils/terminfo.cmo

PARSING= parsing/location.cmo parsing/longident.cmo parsing/pstream.cmo \
  parsing/parser.cmo parsing/lexer.cmo parsing/parse.cmo

TYPING=typing/ident.cmo typing/path.cmo \
  typing/primitive.cmo typing/types.cmo \
  typing/subst.cmo typing/predef.cmo \
  typing/datarepr.cmo typing/env.cmo \
  typing/typedtree.cmo \
  typing/ctype.cmo typing/printtyp.cmo \
  typing/mtype.cmo typing/includecore.cmo \
  typing/includemod.cmo typing/parmatch.cmo \
  typing/typetexp.cmo typing/typecore.cmo \
  typing/typedecl.cmo typing/typeclass.cmo \
  typing/typemod.cmo

COMP=bytecomp/lambda.cmo bytecomp/printlambda.cmo \
  bytecomp/translobj.cmo bytecomp/matching.cmo bytecomp/translcore.cmo \
  bytecomp/translclass.cmo bytecomp/translmod.cmo \
  bytecomp/simplif.cmo bytecomp/runtimedef.cmo

BYTECOMP=bytecomp/meta.cmo bytecomp/instruct.cmo bytecomp/bytegen.cmo \
  bytecomp/printinstr.cmo bytecomp/opcodes.cmo bytecomp/emitcode.cmo \
  bytecomp/symtable.cmo bytecomp/bytelibrarian.cmo bytecomp/bytelink.cmo

ASMCOMP=asmcomp/arch.cmo asmcomp/cmm.cmo asmcomp/printcmm.cmo \
  asmcomp/reg.cmo asmcomp/mach.cmo asmcomp/proc.cmo \
  asmcomp/clambda.cmo asmcomp/compilenv.cmo \
  asmcomp/closure.cmo asmcomp/cmmgen.cmo \
  asmcomp/printmach.cmo asmcomp/selection.cmo asmcomp/liveness.cmo \
  asmcomp/spill.cmo asmcomp/split.cmo \
  asmcomp/interf.cmo asmcomp/coloring.cmo asmcomp/reload.cmo \
  asmcomp/printlinear.cmo asmcomp/linearize.cmo asmcomp/scheduling.cmo \
  asmcomp/emitaux.cmo asmcomp/emit.cmo asmcomp/asmgen.cmo \
  asmcomp/asmlink.cmo asmcomp/asmlibrarian.cmo

DRIVER=driver/errors.cmo driver/compile.cmo driver/main.cmo

OPTDRIVER=driver/opterrors.cmo driver/optcompile.cmo driver/optmain.cmo

TOPLEVEL=driver/errors.cmo driver/compile.cmo \
  toplevel/printval.cmo toplevel/toploop.cmo \
  toplevel/trace.cmo toplevel/topdirs.cmo

TOPLEVELMAIN=toplevel/topmain.cmo

COMPOBJS=$(UTILS) $(PARSING) $(TYPING) $(COMP) $(BYTECOMP) $(DRIVER)

TOPLIB=$(UTILS) $(PARSING) $(TYPING) $(COMP) $(BYTECOMP) $(TOPLEVEL)

TOPOBJS=$(TOPLIB) $(TOPLEVELMAIN)

OPTOBJS=$(UTILS) $(PARSING) $(TYPING) $(COMP) $(ASMCOMP) $(OPTDRIVER)

EXPUNGEOBJS=utils/misc.cmo utils/tbl.cmo \
  utils/config.cmo utils/clflags.cmo \
  typing/ident.cmo typing/predef.cmo \
  bytecomp/runtimedef.cmo bytecomp/symtable.cmo \
  toplevel/expunge.cmo

PERVASIVES=arg array char digest filename format gc hashtbl lexing list map \
  obj parsing pervasives printexc printf queue random set sort \
  stack string stream sys oo genlex topdirs

# Recompile the system using the bootstrap compiler
all: runtime ocamlc ocamllex ocamlyacc ocamltools library ocaml otherlibraries

# The compilation of ocaml will fail if the runtime has changed.
# Never mind, just do make bootstrap to reach fixpoint again.

# Compile everything the first time
world: coldstart clean all

# Complete bootstrapping cycle
bootstrap:
# Save the original bootstrap compiler
	$(MAKE) backup
# Promote the new compiler but keep the old runtime
# This compiler runs on boot/ocamlrun and produces bytecode for
# byterun/ocamlrun
	$(MAKE) promote-cross
# Rebuild ocamlc and ocamllex (run on byterun/ocamlrun)
	$(MAKE) clean
	$(MAKE) ocamlc ocamllex
# Rebuild the library (using byterun/ocamlrun ./ocamlc)
	$(MAKE) library-cross
# Promote the new compiler and the new runtime
	$(MAKE) promote
# Rebuild everything, including ocaml and the tools
	$(MAKE) clean
	$(MAKE) all
# Check if fixpoint reached
	$(MAKE) compare

LIBFILES=stdlib.cma std_exit.cmo *.cmi camlheader

# Start up the system from the distribution compiler
coldstart:
	cd byterun; $(MAKE) all
	cp byterun/ocamlrun boot/ocamlrun
	cd yacc; $(MAKE) all
	cp yacc/ocamlyacc boot/ocamlyacc
	cd stdlib; $(MAKE) COMPILER=../boot/ocamlc all
	cd stdlib; cp $(LIBFILES) ../boot

# Save the current bootstrap compiler
backup:
	if test -d boot/Saved; then : ; else mkdir boot/Saved; fi
	mv boot/Saved boot/Saved.prev
	mkdir boot/Saved
	mv boot/Saved.prev boot/Saved/Saved.prev
	cp boot/ocamlrun boot/Saved
	mv boot/ocamlc boot/ocamllex boot/ocamlyacc boot/Saved
	cd boot; cp $(LIBFILES) Saved

# Promote the newly compiled system to the rank of cross compiler
# (Runs on the old runtime, produces code for the new runtime)
promote-cross:
	cp ocamlc boot/ocamlc
	cp lex/ocamllex boot/ocamllex
	cp yacc/ocamlyacc boot/ocamlyacc
	cd stdlib; cp $(LIBFILES) ../boot

# Promote the newly compiled system to the rank of bootstrap compiler
# (Runs on the new runtime, produces code for the new runtime)
promote: promote-cross
	cp byterun/ocamlrun boot/ocamlrun

# Restore the saved bootstrap compiler if a problem arises
restore:
	mv boot/Saved/* boot
	rmdir boot/Saved
	mv boot/Saved.prev boot/Saved

# Check if fixpoint reached
compare:
	@if cmp boot/ocamlc ocamlc && cmp boot/ocamllex lex/ocamllex; \
	then echo "Fixpoint reached, bootstrap succeeded."; \
        else echo "Fixpoint not reached, try one more bootstrapping cycle."; \
	fi

# Remove old bootstrap compilers
cleanboot:
	rm -rf boot/Saved/Saved.prev/*

# Compile the native-code compiler
opt: runtimeopt ocamlopt libraryopt otherlibrariesopt

# Installation
install:
	if test -d $(BINDIR); then : ; else mkdir $(BINDIR); fi
	if test -d $(LIBDIR); then : ; else mkdir $(LIBDIR); fi
	if test -d $(MANDIR); then : ; else mkdir $(MANDIR); fi
	cd byterun; $(MAKE) install
	cp ocamlc $(BINDIR)/ocamlc
	cp ocaml $(BINDIR)/ocaml
	cd stdlib; $(MAKE) install
	cp lex/ocamllex $(BINDIR)/ocamllex
	cp yacc/ocamlyacc $(BINDIR)/ocamlyacc
	$(CAMLC) -a -o $(LIBDIR)/toplevellib.cma $(TOPLIB)
	cp expunge $(LIBDIR)
	cp toplevel/topmain.cmo $(LIBDIR)
	cp toplevel/toploop.cmi toplevel/topdirs.cmi $(LIBDIR)
	cd tools; $(MAKE) install
	cd man; for i in *.m; do cp $$i $(MANDIR)/`basename $$i .m`.$(MANEXT); done
	for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) install); done
	if test -f ocamlopt; then $(MAKE) installopt; else :; fi

# Installation of the native-code compiler
installopt:
	cd asmrun; $(MAKE) install
	cp ocamlopt $(BINDIR)/ocamlopt
	cd stdlib; $(MAKE) installopt
	for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) installopt); done

realclean:: clean

# The compiler

ocamlc: $(COMPOBJS)
	$(CAMLC) $(LINKFLAGS) -o ocamlc $(COMPOBJS)

clean::
	rm -f ocamlc

# The native-code compiler

ocamlopt: $(OPTOBJS)
	$(CAMLC) $(LINKFLAGS) -o ocamlopt $(OPTOBJS)

clean::
	rm -f ocamlopt

# The toplevel

ocaml: $(TOPOBJS) expunge
	$(CAMLC) $(LINKFLAGS) -linkall -o ocaml.tmp $(TOPOBJS)
	- $(CAMLRUN) ./expunge ocaml.tmp ocaml $(PERVASIVES)
	rm -f ocaml.tmp

clean::
	rm -f ocaml

# The configuration file

utils/config.ml: utils/config.mlp config/Makefile
	@rm -f utils/config.ml
	sed -e 's|%%LIBDIR%%|$(LIBDIR)|' \
            -e 's|%%BYTECC%%|$(BYTECC) $(BYTECCLINKOPTS)|' \
            -e 's|%%NATIVECC%%|$(NATIVECC) $(NATIVECCLINKOPTS)|' \
            -e 's|%%CCLIBS%%|$(CCLIBS)|' \
            -e 's|%%ARCH%%|$(ARCH)|' \
            -e 's|%%MODEL%%|$(MODEL)|' \
            -e 's|%%SYSTEM%%|$(SYSTEM)|' \
            -e 's|%%EXT_OBJ%%|.o|' \
            -e 's|%%EXT_ASM%%|.s|' \
            -e 's|%%EXT_LIB%%|.a|' \
            utils/config.mlp > utils/config.ml
	@chmod -w utils/config.ml

clean::
	rm -f utils/config.ml

beforedepend:: utils/config.ml

# The parser generator

parsing/parser.mli parsing/parser.ml: parsing/parser.mly
	$(CAMLYACC) $(YACCFLAGS) parsing/parser.mly

clean::
	rm -f parsing/parser.mli parsing/parser.ml parsing/parser.output

beforedepend:: parsing/parser.mli parsing/parser.ml

# The lexer generator

parsing/lexer.ml: parsing/lexer.mll
	$(CAMLLEX) parsing/lexer.mll

clean::
	rm -f parsing/lexer.ml

beforedepend:: parsing/lexer.ml

# The compiler compiled with the native-code compiler
# Currently not working because it requires C primitives from byterun/meta.c
# which are not provided by asmrun/libasmrun.a

# ocamlc.opt: $(COMPOBJS:.cmo=.cmx)
#	$(CAMLOPT) $(LINKFLAGS) -o ocamlc.opt $(COMPOBJS:.cmo=.cmx)

clean::
	rm -f ocamlc.opt

# The native-code compiler compiled with itself

ocamlopt.opt: $(OPTOBJS:.cmo=.cmx)
	$(CAMLOPT) $(LINKFLAGS) -o ocamlopt.opt $(OPTOBJS:.cmo=.cmx)

clean::
	rm -f ocamlopt.opt

$(OPTOBJS:.cmo=.cmx): ocamlopt

# The numeric opcodes

bytecomp/opcodes.ml: byterun/instruct.h
	sed -n -e '/^enum/p' -e 's/,//g' -e '/^  /p' byterun/instruct.h | \
        awk -f tools/make-opcodes > bytecomp/opcodes.ml

clean::
	rm -f bytecomp/opcodes.ml

beforedepend:: bytecomp/opcodes.ml

# The predefined exceptions and primitives

byterun/primitives:
	cd byterun; $(MAKE) primitives

bytecomp/runtimedef.ml: byterun/primitives byterun/fail.h
	(echo 'let builtin_exceptions = [|'; \
	 sed -n -e 's|.*/\* \("[A-Za-z_]*"\) \*/$$|  \1;|p' byterun/fail.h | \
	 sed -e '$$s/;$$//'; \
         echo '|]'; \
         echo 'let builtin_primitives = [|'; \
         sed -e 's/.*/  "&";/' -e '$$s/;$$//' byterun/primitives; \
	 echo '|]') > bytecomp/runtimedef.ml

clean::
	rm -f bytecomp/runtimedef.ml

beforedepend:: bytecomp/runtimedef.ml

# Choose the right arch, emit and proc files

asmcomp/arch.ml: asmcomp/arch_$(ARCH).ml
	ln -s arch_$(ARCH).ml asmcomp/arch.ml

clean::
	rm -f asmcomp/arch.ml

beforedepend:: asmcomp/arch.ml

asmcomp/proc.ml: asmcomp/proc_$(ARCH).ml
	ln -s proc_$(ARCH).ml asmcomp/proc.ml

clean::
	rm -f asmcomp/proc.ml

beforedepend:: asmcomp/proc.ml

# Preprocess the code emitters

asmcomp/emit.ml: asmcomp/emit_$(ARCH).mlp tools/cvt_emit
	boot/ocamlrun tools/cvt_emit < asmcomp/emit_$(ARCH).mlp > asmcomp/emit.ml \
        || { rm -f asmcomp/emit.ml; exit 2; }

clean::
	rm -f asmcomp/emit.ml

beforedepend:: asmcomp/emit.ml

tools/cvt_emit: tools/cvt_emit.mll
	cd tools; $(MAKE) cvt_emit

# The "expunge" utility

expunge: $(EXPUNGEOBJS)
	$(CAMLC) $(LINKFLAGS) -o expunge $(EXPUNGEOBJS)

clean::
	rm -f expunge

# The runtime system for the bytecode compiler

runtime:
	cd byterun; $(MAKE) all
realclean::
	cd byterun; $(MAKE) clean
alldepend::
	cd byterun; $(MAKE) depend

# The runtime system for the native-code compiler

runtimeopt:
	cd asmrun; $(MAKE) all
	if test -f stdlib/libasmrun.a; then :; else \
          ln -s ../asmrun/libasmrun.a stdlib/libasmrun.a; fi
realclean::
	cd asmrun; $(MAKE) clean
alldepend::
	cd asmrun; $(MAKE) depend

# The library

library:
	cd stdlib; $(MAKE) all
library-cross:
	cd stdlib; $(MAKE) RUNTIME=../byterun/ocamlrun all
libraryopt:
	cd stdlib; $(MAKE) allopt
clean::
	cd stdlib; $(MAKE) clean
alldepend::
	cd stdlib; $(MAKE) depend

# The lexer and parser generators

ocamllex:
	cd lex; $(MAKE) all
clean::
	cd lex; $(MAKE) clean
alldepend::
	cd lex; $(MAKE) depend

ocamlyacc:
	cd yacc; $(MAKE) all
realclean::
	cd yacc; $(MAKE) clean

# Tools

ocamltools:
	cd tools; $(MAKE) all
clean::
	cd tools; $(MAKE) clean
alldepend::
	cd tools; $(MAKE) depend

# The extra libraries

otherlibraries:
	set -e; for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) all); done
otherlibrariesopt:
	set -e; for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) allopt); done
clean::
	for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) clean); done
realclean::
	for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) realclean); done
alldepend::
	for i in $(OTHERLIBRARIES); do (cd otherlibs/$$i; $(MAKE) depend); done

# Default rules

.SUFFIXES: .ml .mli .cmo .cmi .cmx

.ml.cmo:
	$(CAMLC) $(COMPFLAGS) -c $<

.mli.cmi:
	$(CAMLC) $(COMPFLAGS) -c $<

.ml.cmx:
	$(CAMLOPT) $(COMPFLAGS) -c $<

clean::
	rm -f utils/*.cm[iox] utils/*.[so] utils/*~
	rm -f parsing/*.cm[iox] parsing/*.[so] parsing/*~
	rm -f typing/*.cm[iox] typing/*.[so] typing/*~
	rm -f bytecomp/*.cm[iox] bytecomp/*.[so] bytecomp/*~
	rm -f asmcomp/*.cm[iox] asmcomp/*.[so] asmcomp/*~
	rm -f driver/*.cm[iox] driver/*.[so] driver/*~
	rm -f toplevel/*.cm[iox] toplevel/*.[so] toplevel/*~
	rm -f tools/*.cm[iox] tools/*.[so] tools/*~
	rm -f *~

depend: beforedepend
	(for d in utils parsing typing bytecomp asmcomp driver toplevel; \
         do $(CAMLDEP) $(DEPFLAGS) $$d/*.mli $$d/*.ml; \
         done) > .depend

alldepend:: depend

include .depend