# Copyright (c) 2014, Grégoire Duchêne <gduchene@awhk.org>
#
# Permission to use, copy, modify, and/or distribute this software for
# any purpose with or without fee is hereby granted, provided that the
# above copyright notice and this permission notice appear in all
# copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
# DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
# PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
# TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.

include $(dir $(lastword $(MAKEFILE_LIST)))gnu.ocaml.rules.mk

_FNDFLAGS=	. $(_MAXDEPTH) -type f -regex $(_PAT) $(_EXL)

ifdef NOSUBDIR
_MAXDEPTH=	-maxdepth 1
endif

ifdef EXCL
_EXL=		$(foreach e, $(EXCL), -not -regex '.*$e.*')
endif

DEPFILE?=	.Makefile.dep
MENHIR?=	menhir
OCAMLDEP?=	ocamldep
OCAMLLEX?=	ocamllex

.DEFAULT_GOAL:=	obj

_FND=		find
_PAT=		'.*ml[ily]*.*'
_SRC=		$(shell $(_FND) $(_FNDFLAGS))
_ORD=		$(CSRC) $(shell $(OCAMLDEP) $(_INC) -sort $(_SRC))
_INC=		$(foreach e, $(sort $(foreach e, $(_SRC), $(dir $e))), -I '$e')

ifdef CSRC
ifndef OCAMLNATIVE
OCAMLFLAGS+=	-custom
endif
endif

ifndef OCAMLC
ifdef OCAMLNATIVE
OCAMLC=		ocamlfind ocamlopt
else
OCAMLC=		ocamlfind ocamlc
endif
endif

ifdef PKG
OCAMLFLAGS+=	-linkpkg -package '$(PKG)'
endif

OCAMLFLAGS+=	$(DEBUG)

ifndef NOSUBDIR
OCAMLFLAGS+=	$(_INC)
endif

_OBJ=		$(patsubst %.c, %.o, $(filter %.c, $(_ORD)))

ifdef OCAMLNATIVE
_OBJ+=		$(patsubst %.ml, %.cmx, $(filter %.ml, $(_ORD)))
_CLN+=		$(patsubst %.cmx, %.o, $(_OBJ))
_CLN+=		$(patsubst %.cmx, %.cmi, $(_OBJ))
else
_OBJ+=		$(patsubst %.ml, %.cmo, $(filter %.ml, $(_ORD)))
_CLN+=		$(patsubst %.cmo, %.cmi, $(_OBJ))
endif

_INT=		$(patsubst %.mly, %.ml, $(filter %.mly, $(_SRC)))
_INT+=		$(patsubst %.mll, %.ml, $(filter %.mll, $(_SRC)))
_CLN+=		$(patsubst %.ml, %.mli, $(_INT))

-include $(DEPFILE)

$(_OBJ):	$(DEPFILE)

$(DEPFILE):	$(_SRC) $(_INT)
	$(OCAMLDEP) $(_INC) $(_SRC) > $(DEPFILE)

all:		$(_OBJ)

clean:
	$(RM) $(_CLN) $(_INT) $(_OBJ) $(PROG)

dep:
	$(OCAMLDEP) $(_INC) $(_SRC) > $(DEPFILE)

dist-clean:	clean
	$(RM) $(DEPFILE)

obj:		$(_OBJ)

.PHONY:		dep

ifndef OSTUMAKE_DEBUG
.SILENT:	$(DEPFILE) dep
endif

.SUFFIXES: