Markus Mottl avatar Markus Mottl committed 5f433ce

Imported cfg.

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Files changed (20)

+2003-04-08: Updated OCamlMakefile.
+
+            Added BNF-modules to the CFG-library, since they often
+            come handy.
+
+            Changed BNF-syntax slightly.
+
+2003-01-07: Updated OCamlMakefile to make use of "findlib".
+
+2002-09-11: Updated OCamlMakefile and license.
+
+            Documented library interface for ocamldoc.
+
+2002-08-23: Added new function "remove_nt".
+
+2002-05-04: Revised the whole installation procedure.
+
+2002-04-30:  Updated OcamlMakefile: it does not ask for confirmation
+             during installation anymore!
+
+2002-04-04: Renamed a few things in the BNF-example for consistency.
+
+2001-09-28: Fixed installation bug.
+
+2001-06-30: Removed "Printexc.catch" from BNF-example: is going to be
+            deprecated in upcoming OCaml-release.
+
+2001-02-23: Changed interface in "cfg_intf.mli" slightly:
+
+            Renamed function "live_grammar" to "deriv_depth_info" and
+            also changed some comments.
+
+2001-01-30: Restructured project.
+
+2001-01-24: Updated OcamlMakefile.
+
+2000-11-07: Added depth-bounded derivation
+
+2000-06-07: Updated OcamlMakefile.
+
+2000-04-25: Removed extended versions of "Map" and "Set" - more convenient
+            to use standard.
+
+2000-01-04: First release.
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+###########################################################################
+#                              OCamlMakefile
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+#
+#                             For updates see:
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+  RES_CLIB_SUF := _stubs
+endif
+export RES_CLIB_SUF
+
+ifndef RESULT
+  RESULT := foo
+endif
+export RESULT
+
+export LIB_PACK_NAME
+
+ifndef DOC_FILES
+  DOC_FILES := $(filter %.mli, $(SOURCES))
+endif
+export DOC_FILES
+
+export BCSUFFIX
+export NCSUFFIX
+
+ifndef TOPSUFFIX
+  TOPSUFFIX := .top
+endif
+export TOPSUFFIX
+
+# Eventually set include- and library-paths, libraries to link,
+# additional compilation-, link- and ocamlyacc-flags
+# Path- and library information needs not be written with "-I" and such...
+# Define THREADS if you need it, otherwise leave it unset (same for
+# USE_CAMLP4)!
+
+export THREADS
+export VMTHREADS
+export ANNOTATE
+export USE_CAMLP4
+
+export INCDIRS
+export LIBDIRS
+export EXTLIBDIRS
+export RESULTDEPS
+export OCAML_DEFAULT_DIRS
+
+export LIBS
+export CLIBS
+
+export OCAMLFLAGS
+export OCAMLNCFLAGS
+export OCAMLBCFLAGS
+
+export OCAMLLDFLAGS
+export OCAMLNLDFLAGS
+export OCAMLBLDFLAGS
+
+ifndef OCAMLCPFLAGS
+  OCAMLCPFLAGS := a
+endif
+
+export OCAMLCPFLAGS
+
+export PPFLAGS
+
+export YFLAGS
+export IDLFLAGS
+
+export OCAMLDOCFLAGS
+
+export OCAMLFIND_INSTFLAGS
+
+export DVIPSFLAGS
+
+export STATIC
+
+# Add a list of optional trash files that should be deleted by "make clean"
+export TRASH
+
+####################  variables depending on your OCaml-installation
+
+ifdef MINGW
+  export MINGW
+  WIN32   := 1
+  CFLAGS_WIN32 := -mno-cygwin
+endif
+ifdef MSVC
+  export MSVC
+  WIN32   := 1
+  ifndef STATIC
+    CPPFLAGS_WIN32 := -DCAML_DLL
+  endif
+  CFLAGS_WIN32 += -nologo
+  EXT_OBJ := obj
+  EXT_LIB := lib
+  ifeq ($(CC),gcc)
+    # work around GNU Make default value
+    ifdef THREADS
+      CC := cl -MT
+    else
+      CC := cl
+    endif
+  endif
+  ifeq ($(CXX),g++)
+    # work around GNU Make default value
+    CXX := $(CC)
+  endif
+  CFLAG_O := -Fo
+endif
+ifdef WIN32
+  EXT_CXX := cpp
+  EXE     := .exe
+endif
+
+ifndef EXT_OBJ
+  EXT_OBJ := o
+endif
+ifndef EXT_LIB
+  EXT_LIB := a
+endif
+ifndef EXT_CXX
+  EXT_CXX := cc
+endif
+ifndef EXE
+  EXE := # empty
+endif
+ifndef CFLAG_O
+  CFLAG_O := -o # do not delete this comment (preserves trailing whitespace)!
+endif
+
+export CC
+export CXX
+export CFLAGS
+export CXXFLAGS
+export LDFLAGS
+export CPPFLAGS
+
+ifndef RPATH_FLAG
+  RPATH_FLAG := -R
+endif
+export RPATH_FLAG
+
+ifndef MSVC
+ifndef PIC_CFLAGS
+  PIC_CFLAGS := -fPIC
+endif
+ifndef PIC_CPPFLAGS
+  PIC_CPPFLAGS := -DPIC
+endif
+endif
+
+export PIC_CFLAGS
+export PIC_CPPFLAGS
+
+BCRESULT  := $(addsuffix $(BCSUFFIX), $(RESULT))
+NCRESULT  := $(addsuffix $(NCSUFFIX), $(RESULT))
+TOPRESULT := $(addsuffix $(TOPSUFFIX), $(RESULT))
+
+ifndef OCAMLFIND
+  OCAMLFIND := ocamlfind
+endif
+export OCAMLFIND
+
+ifndef OCAMLC
+  OCAMLC := ocamlc
+endif
+export OCAMLC
+
+ifndef OCAMLOPT
+  OCAMLOPT := ocamlopt
+endif
+export OCAMLOPT
+
+ifndef OCAMLMKTOP
+  OCAMLMKTOP := ocamlmktop
+endif
+export OCAMLMKTOP
+
+ifndef OCAMLCP
+  OCAMLCP := ocamlcp
+endif
+export OCAMLCP
+
+ifndef OCAMLDEP
+  OCAMLDEP := ocamldep
+endif
+export OCAMLDEP
+
+ifndef OCAMLLEX
+  OCAMLLEX := ocamllex
+endif
+export OCAMLLEX
+
+ifndef OCAMLYACC
+  OCAMLYACC := ocamlyacc
+endif
+export OCAMLYACC
+
+ifndef OCAMLMKLIB
+  OCAMLMKLIB := ocamlmklib
+endif
+export OCAMLMKLIB
+
+ifndef OCAML_GLADECC
+  OCAML_GLADECC := lablgladecc2
+endif
+export OCAML_GLADECC
+
+ifndef OCAML_GLADECC_FLAGS
+  OCAML_GLADECC_FLAGS :=
+endif
+export OCAML_GLADECC_FLAGS
+
+ifndef CAMELEON_REPORT
+  CAMELEON_REPORT := report
+endif
+export CAMELEON_REPORT
+
+ifndef CAMELEON_REPORT_FLAGS
+  CAMELEON_REPORT_FLAGS :=
+endif
+export CAMELEON_REPORT_FLAGS
+
+ifndef CAMELEON_ZOGGY
+  CAMELEON_ZOGGY := camlp4o pa_zog.cma pr_o.cmo
+endif
+export CAMELEON_ZOGGY
+
+ifndef CAMELEON_ZOGGY_FLAGS
+  CAMELEON_ZOGGY_FLAGS :=
+endif
+export CAMELEON_ZOGGY_FLAGS
+
+ifndef OXRIDL
+  OXRIDL := oxridl
+endif
+export OXRIDL
+
+ifndef CAMLIDL
+  CAMLIDL := camlidl
+endif
+export CAMLIDL
+
+ifndef CAMLIDLDLL
+  CAMLIDLDLL := camlidldll
+endif
+export CAMLIDLDLL
+
+ifndef NOIDLHEADER
+  MAYBE_IDL_HEADER := -header
+endif
+export NOIDLHEADER
+
+export NO_CUSTOM
+
+ifndef CAMLP4
+  CAMLP4 := camlp4
+endif
+export CAMLP4
+
+ifndef REAL_OCAMLFIND
+  ifdef PACKS
+    ifndef CREATE_LIB
+      ifdef THREADS
+	PACKS += threads
+      endif
+    endif
+    empty :=
+    space := $(empty) $(empty)
+    comma := ,
+    ifdef PREDS
+      PRE_OCAML_FIND_PREDICATES := $(subst $(space),$(comma),$(PREDS))
+      PRE_OCAML_FIND_PACKAGES := $(subst $(space),$(comma),$(PACKS))
+      OCAML_FIND_PREDICATES := -predicates $(PRE_OCAML_FIND_PREDICATES)
+  #    OCAML_DEP_PREDICATES := -syntax $(PRE_OCAML_FIND_PREDICATES)
+      OCAML_FIND_PACKAGES := $(OCAML_FIND_PREDICATES) -package $(PRE_OCAML_FIND_PACKAGES)
+      OCAML_DEP_PACKAGES := $(OCAML_DEP_PREDICATES) -package $(PRE_OCAML_FIND_PACKAGES)
+    else
+      OCAML_FIND_PACKAGES := -package $(subst $(space),$(comma),$(PACKS))
+      OCAML_DEP_PACKAGES :=
+    endif
+    OCAML_FIND_LINKPKG := -linkpkg
+    REAL_OCAMLFIND := $(OCAMLFIND)
+  endif
+endif
+
+export OCAML_FIND_PACKAGES
+export OCAML_DEP_PACKAGES
+export OCAML_FIND_LINKPKG
+export REAL_OCAMLFIND
+
+ifndef OCAMLDOC
+  OCAMLDOC := ocamldoc
+endif
+export OCAMLDOC
+
+ifndef LATEX
+  LATEX := latex
+endif
+export LATEX
+
+ifndef DVIPS
+  DVIPS := dvips
+endif
+export DVIPS
+
+ifndef PS2PDF
+  PS2PDF := ps2pdf
+endif
+export PS2PDF
+
+ifndef OCAMLMAKEFILE
+  OCAMLMAKEFILE := OCamlMakefile
+endif
+export OCAMLMAKEFILE
+
+ifndef OCAMLLIBPATH
+  OCAMLLIBPATH := \
+    $(shell $(OCAMLC) 2>/dev/null -where || echo /usr/local/lib/ocaml)
+endif
+export OCAMLLIBPATH
+
+ifndef OCAML_LIB_INSTALL
+  OCAML_LIB_INSTALL := $(OCAMLLIBPATH)/contrib
+endif
+export OCAML_LIB_INSTALL
+
+###########################################################################
+
+####################  change following sections only if
+####################    you know what you are doing!
+
+# delete target files when a build command fails
+.PHONY: .DELETE_ON_ERROR
+.DELETE_ON_ERROR:
+
+# for pedants using "--warn-undefined-variables"
+export MAYBE_IDL
+export REAL_RESULT
+export CAMLIDLFLAGS
+export THREAD_FLAG
+export RES_CLIB
+export MAKEDLL
+export ANNOT_FLAG
+export C_OXRIDL
+export SUBPROJS
+export CFLAGS_WIN32
+export CPPFLAGS_WIN32
+
+INCFLAGS :=
+
+SHELL := /bin/sh
+
+MLDEPDIR := ._d
+BCDIDIR  := ._bcdi
+NCDIDIR  := ._ncdi
+
+FILTER_EXTNS := %.mli %.ml %.mll %.mly %.idl %.oxridl %.c %.$(EXT_CXX) %.rep %.zog %.glade
+
+FILTERED     := $(filter $(FILTER_EXTNS), $(SOURCES))
+SOURCE_DIRS  := $(filter-out ./, $(sort $(dir $(FILTERED))))
+
+FILTERED_REP := $(filter %.rep, $(FILTERED))
+DEP_REP      := $(FILTERED_REP:%.rep=$(MLDEPDIR)/%.d)
+AUTO_REP     := $(FILTERED_REP:.rep=.ml)
+
+FILTERED_ZOG := $(filter %.zog, $(FILTERED))
+DEP_ZOG      := $(FILTERED_ZOG:%.zog=$(MLDEPDIR)/%.d)
+AUTO_ZOG     := $(FILTERED_ZOG:.zog=.ml)
+
+FILTERED_GLADE := $(filter %.glade, $(FILTERED))
+DEP_GLADE      := $(FILTERED_GLADE:%.glade=$(MLDEPDIR)/%.d)
+AUTO_GLADE     := $(FILTERED_GLADE:.glade=.ml)
+
+FILTERED_ML  := $(filter %.ml, $(FILTERED))
+DEP_ML       := $(FILTERED_ML:%.ml=$(MLDEPDIR)/%.d)
+
+FILTERED_MLI := $(filter %.mli, $(FILTERED))
+DEP_MLI      := $(FILTERED_MLI:.mli=.di)
+
+FILTERED_MLL := $(filter %.mll, $(FILTERED))
+DEP_MLL      := $(FILTERED_MLL:%.mll=$(MLDEPDIR)/%.d)
+AUTO_MLL     := $(FILTERED_MLL:.mll=.ml)
+
+FILTERED_MLY := $(filter %.mly, $(FILTERED))
+DEP_MLY      := $(FILTERED_MLY:%.mly=$(MLDEPDIR)/%.d) $(FILTERED_MLY:.mly=.di)
+AUTO_MLY     := $(FILTERED_MLY:.mly=.mli) $(FILTERED_MLY:.mly=.ml)
+
+FILTERED_IDL := $(filter %.idl, $(FILTERED))
+DEP_IDL      := $(FILTERED_IDL:%.idl=$(MLDEPDIR)/%.d) $(FILTERED_IDL:.idl=.di)
+C_IDL        := $(FILTERED_IDL:%.idl=%_stubs.c)
+ifndef NOIDLHEADER
+ C_IDL += $(FILTERED_IDL:.idl=.h)
+endif
+OBJ_C_IDL    := $(FILTERED_IDL:%.idl=%_stubs.$(EXT_OBJ))
+AUTO_IDL     := $(FILTERED_IDL:.idl=.mli) $(FILTERED_IDL:.idl=.ml) $(C_IDL)
+
+FILTERED_OXRIDL := $(filter %.oxridl, $(FILTERED))
+DEP_OXRIDL      := $(FILTERED_OXRIDL:%.oxridl=$(MLDEPDIR)/%.d) $(FILTERED_OXRIDL:.oxridl=.di)
+AUTO_OXRIDL     := $(FILTERED_OXRIDL:.oxridl=.mli) $(FILTERED_OXRIDL:.oxridl=.ml) $(C_OXRIDL)
+
+FILTERED_C_CXX := $(filter %.c %.$(EXT_CXX), $(FILTERED))
+OBJ_C_CXX      := $(FILTERED_C_CXX:.c=.$(EXT_OBJ))
+OBJ_C_CXX      := $(OBJ_C_CXX:.$(EXT_CXX)=.$(EXT_OBJ))
+
+PRE_TARGETS  += $(AUTO_MLL) $(AUTO_MLY) $(AUTO_IDL) $(AUTO_OXRIDL) $(AUTO_ZOG) $(AUTO_REP) $(AUTO_GLADE)
+
+ALL_DEPS     := $(DEP_ML) $(DEP_MLI) $(DEP_MLL) $(DEP_MLY) $(DEP_IDL) $(DEP_OXRIDL) $(DEP_ZOG) $(DEP_REP) $(DEP_GLADE)
+
+MLDEPS       := $(filter %.d, $(ALL_DEPS))
+MLIDEPS      := $(filter %.di, $(ALL_DEPS))
+BCDEPIS      := $(MLIDEPS:%.di=$(BCDIDIR)/%.di)
+NCDEPIS      := $(MLIDEPS:%.di=$(NCDIDIR)/%.di)
+
+ALLML        := $(filter %.mli %.ml %.mll %.mly %.idl %.oxridl %.rep %.zog %.glade, $(FILTERED))
+
+IMPLO_INTF   := $(ALLML:%.mli=%.mli.__)
+IMPLO_INTF   := $(foreach file, $(IMPLO_INTF), \
+                  $(basename $(file)).cmi $(basename $(file)).cmo)
+IMPLO_INTF   := $(filter-out %.mli.cmo, $(IMPLO_INTF))
+IMPLO_INTF   := $(IMPLO_INTF:%.mli.cmi=%.cmi)
+
+IMPLX_INTF   := $(IMPLO_INTF:.cmo=.cmx)
+
+INTF         := $(filter %.cmi, $(IMPLO_INTF))
+IMPL_CMO     := $(filter %.cmo, $(IMPLO_INTF))
+IMPL_CMX     := $(IMPL_CMO:.cmo=.cmx)
+IMPL_ASM     := $(IMPL_CMO:.cmo=.asm)
+IMPL_S       := $(IMPL_CMO:.cmo=.s)
+
+OBJ_LINK     := $(OBJ_C_IDL) $(OBJ_C_CXX)
+OBJ_FILES    := $(IMPL_CMO:.cmo=.$(EXT_OBJ)) $(OBJ_LINK)
+
+EXECS        := $(addsuffix $(EXE), \
+                            $(sort $(TOPRESULT) $(BCRESULT) $(NCRESULT)))
+ifdef WIN32
+  EXECS      += $(BCRESULT).dll $(NCRESULT).dll
+endif
+
+CLIB_BASE    := $(RESULT)$(RES_CLIB_SUF)
+ifneq ($(strip $(OBJ_LINK)),)
+  RES_CLIB     := lib$(CLIB_BASE).$(EXT_LIB)
+endif
+
+ifdef WIN32
+DLLSONAME := $(CLIB_BASE).dll
+else
+DLLSONAME := dll$(CLIB_BASE).so
+endif
+
+NONEXECS     := $(INTF) $(IMPL_CMO) $(IMPL_CMX) $(IMPL_ASM) $(IMPL_S) \
+		$(OBJ_FILES) $(PRE_TARGETS) $(BCRESULT).cma $(NCRESULT).cmxa \
+		$(NCRESULT).$(EXT_LIB) $(BCRESULT).cmi $(BCRESULT).cmo \
+		$(NCRESULT).cmi $(NCRESULT).cmx $(NCRESULT).o \
+		$(RES_CLIB) $(IMPL_CMO:.cmo=.annot) \
+		$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo $(LIB_PACK_NAME).cmx $(LIB_PACK_NAME).o
+
+ifndef STATIC
+  NONEXECS += $(DLLSONAME)
+endif
+
+ifndef LIBINSTALL_FILES
+  LIBINSTALL_FILES := $(RESULT).mli $(RESULT).cmi $(RESULT).cma \
+		      $(RESULT).cmxa $(RESULT).$(EXT_LIB) $(RES_CLIB)
+  ifndef STATIC
+    ifneq ($(strip $(OBJ_LINK)),)
+      LIBINSTALL_FILES += $(DLLSONAME)
+    endif
+  endif
+endif
+
+export LIBINSTALL_FILES
+
+ifdef WIN32
+  # some extra stuff is created while linking DLLs
+  NONEXECS   += $(BCRESULT).$(EXT_LIB) $(BCRESULT).exp $(NCRESULT).exp $(CLIB_BASE).exp $(CLIB_BASE).lib
+endif
+
+TARGETS      := $(EXECS) $(NONEXECS)
+
+# If there are IDL-files
+ifneq ($(strip $(FILTERED_IDL)),)
+  MAYBE_IDL := -cclib -lcamlidl
+endif
+
+ifdef USE_CAMLP4
+  CAMLP4PATH := \
+    $(shell $(CAMLP4) -where 2>/dev/null || echo /usr/local/lib/camlp4)
+  INCFLAGS := -I $(CAMLP4PATH)
+  CINCFLAGS := -I$(CAMLP4PATH)
+endif
+
+DINCFLAGS := $(INCFLAGS) $(SOURCE_DIRS:%=-I %) $(OCAML_DEFAULT_DIRS:%=-I %)
+INCFLAGS := $(DINCFLAGS) $(INCDIRS:%=-I %)
+CINCFLAGS += $(SOURCE_DIRS:%=-I%) $(INCDIRS:%=-I%) $(OCAML_DEFAULT_DIRS:%=-I%)
+
+ifndef MSVC
+CLIBFLAGS += $(SOURCE_DIRS:%=-L%) $(LIBDIRS:%=-L%) \
+             $(EXTLIBDIRS:%=-L%) $(EXTLIBDIRS:%=-Wl,$(RPATH_FLAG)%) \
+             $(OCAML_DEFAULT_DIRS:%=-L%)
+endif
+
+ifndef PROFILING
+  INTF_OCAMLC := $(OCAMLC)
+else
+  ifndef THREADS
+    INTF_OCAMLC := $(OCAMLCP) -p $(OCAMLCPFLAGS)
+  else
+    # OCaml does not support profiling byte code
+    # with threads (yet), therefore we force an error.
+    ifndef REAL_OCAMLC
+      $(error Profiling of multithreaded byte code not yet supported by OCaml)
+    endif
+    INTF_OCAMLC := $(OCAMLC)
+  endif
+endif
+
+ifndef MSVC
+COMMON_LDFLAGS := $(LDFLAGS:%=-ccopt %) $(SOURCE_DIRS:%=-ccopt -L%) \
+		  $(LIBDIRS:%=-ccopt -L%) $(EXTLIBDIRS:%=-ccopt -L%) \
+		  $(EXTLIBDIRS:%=-ccopt -Wl,$(RPATH_FLAG)%) \
+		  $(OCAML_DEFAULT_DIRS:%=-ccopt -L%)
+else
+COMMON_LDFLAGS := -ccopt "/link -NODEFAULTLIB:LIBC $(LDFLAGS:%=%) $(SOURCE_DIRS:%=-LIBPATH:%) \
+		  $(LIBDIRS:%=-LIBPATH:%) $(EXTLIBDIRS:%=-LIBPATH:%) \
+		  $(OCAML_DEFAULT_DIRS:%=-LIBPATH:%) "
+endif
+
+CLIBS_OPTS := $(CLIBS:%=-cclib -l%)
+ifdef MSVC
+  ifndef STATIC
+  # MSVC libraries do not have 'lib' prefix
+  CLIBS_OPTS := $(CLIBS:%=-cclib %.lib)
+  endif
+endif
+
+ifneq ($(strip $(OBJ_LINK)),)
+  ifdef CREATE_LIB
+    OBJS_LIBS := -cclib -l$(CLIB_BASE) $(CLIBS_OPTS) $(MAYBE_IDL)
+  else
+    OBJS_LIBS := $(OBJ_LINK) $(CLIBS_OPTS) $(MAYBE_IDL)
+  endif
+else
+  OBJS_LIBS := $(CLIBS_OPTS) $(MAYBE_IDL)
+endif
+
+# If we have to make byte-code
+ifndef REAL_OCAMLC
+  BYTE_OCAML := y
+
+  # EXTRADEPS is added dependencies we have to insert for all
+  # executable files we generate.  Ideally it should be all of the
+  # libraries we use, but it's hard to find the ones that get searched on
+  # the path since I don't know the paths built into the compiler, so
+  # just include the ones with slashes in their names.
+  EXTRADEPS := $(addsuffix .cma,$(foreach i,$(LIBS),$(if $(findstring /,$(i)),$(i))))
+  SPECIAL_OCAMLFLAGS := $(OCAMLBCFLAGS)
+
+  REAL_OCAMLC := $(INTF_OCAMLC)
+
+  REAL_IMPL := $(IMPL_CMO)
+  REAL_IMPL_INTF := $(IMPLO_INTF)
+  IMPL_SUF := .cmo
+
+  DEPFLAGS  :=
+  MAKE_DEPS := $(MLDEPS) $(BCDEPIS)
+
+  ifdef CREATE_LIB
+    override CFLAGS := $(PIC_CFLAGS) $(CFLAGS)
+    override CPPFLAGS := $(PIC_CPPFLAGS) $(CPPFLAGS)
+    ifndef STATIC
+      ifneq ($(strip $(OBJ_LINK)),)
+	MAKEDLL := $(DLLSONAME)
+	ALL_LDFLAGS := -dllib $(DLLSONAME)
+      endif
+    endif
+  endif
+
+  ifndef NO_CUSTOM
+    ifneq "$(strip $(OBJ_LINK) $(THREADS) $(MAYBE_IDL) $(CLIBS))" ""
+      ALL_LDFLAGS += -custom
+    endif
+  endif
+
+  ALL_LDFLAGS += $(INCFLAGS) $(OCAMLLDFLAGS) $(OCAMLBLDFLAGS) \
+                 $(COMMON_LDFLAGS) $(LIBS:%=%.cma)
+  CAMLIDLDLLFLAGS :=
+
+  ifdef THREADS
+    ifdef VMTHREADS
+      THREAD_FLAG := -vmthread
+    else
+      THREAD_FLAG := -thread
+    endif
+    ALL_LDFLAGS := $(THREAD_FLAG) $(ALL_LDFLAGS)
+    ifndef CREATE_LIB
+      ifndef REAL_OCAMLFIND
+        ALL_LDFLAGS := unix.cma threads.cma $(ALL_LDFLAGS)
+      endif
+    endif
+  endif
+
+# we have to make native-code
+else
+  EXTRADEPS := $(addsuffix .cmxa,$(foreach i,$(LIBS),$(if $(findstring /,$(i)),$(i))))
+  ifndef PROFILING
+    SPECIAL_OCAMLFLAGS := $(OCAMLNCFLAGS)
+    PLDFLAGS :=
+  else
+    SPECIAL_OCAMLFLAGS := -p $(OCAMLNCFLAGS)
+    PLDFLAGS := -p
+  endif
+
+  REAL_IMPL := $(IMPL_CMX)
+  REAL_IMPL_INTF := $(IMPLX_INTF)
+  IMPL_SUF := .cmx
+
+  override CPPFLAGS := -DNATIVE_CODE $(CPPFLAGS)
+
+  DEPFLAGS  := -native
+  MAKE_DEPS := $(MLDEPS) $(NCDEPIS)
+
+  ALL_LDFLAGS := $(PLDFLAGS) $(INCFLAGS) $(OCAMLLDFLAGS) \
+                 $(OCAMLNLDFLAGS) $(COMMON_LDFLAGS)
+  CAMLIDLDLLFLAGS := -opt
+
+  ifndef CREATE_LIB
+    ALL_LDFLAGS += $(LIBS:%=%.cmxa)
+  else
+    override CFLAGS := $(PIC_CFLAGS) $(CFLAGS)
+    override CPPFLAGS := $(PIC_CPPFLAGS) $(CPPFLAGS)
+  endif
+
+  ifdef THREADS
+    THREAD_FLAG := -thread
+    ALL_LDFLAGS := $(THREAD_FLAG) $(ALL_LDFLAGS)
+    ifndef CREATE_LIB
+      ifndef REAL_OCAMLFIND
+        ALL_LDFLAGS := unix.cmxa threads.cmxa $(ALL_LDFLAGS)
+      endif
+    endif
+  endif
+endif
+
+export MAKE_DEPS
+
+ifdef ANNOTATE
+  ANNOT_FLAG := -dtypes
+else
+endif
+
+ALL_OCAMLCFLAGS := $(THREAD_FLAG) $(ANNOT_FLAG) $(OCAMLFLAGS) \
+                   $(INCFLAGS) $(SPECIAL_OCAMLFLAGS)
+
+ifdef make_deps
+  -include $(MAKE_DEPS)
+  PRE_TARGETS :=
+endif
+
+###########################################################################
+# USER RULES
+
+# Call "OCamlMakefile QUIET=" to get rid of all of the @'s.
+QUIET=@
+
+# generates byte-code (default)
+byte-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+bc:	byte-code
+
+byte-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+bcnl:	byte-code-nolink
+
+top:			$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(TOPRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes
+
+# generates native-code
+
+native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(NCRESULT) \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+nc:	native-code
+
+native-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+ncnl:	native-code-nolink
+
+# generates byte-code libraries
+byte-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+bcl:	byte-code-library
+
+# generates native-code libraries
+native-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).cmxa \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+ncl:	native-code-library
+
+ifdef WIN32
+# generates byte-code dll
+byte-code-dll:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).dll \
+				REAL_RESULT="$(BCRESULT)" \
+				make_deps=yes
+bcd:	byte-code-dll
+
+# generates native-code dll
+native-code-dll:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).dll \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				make_deps=yes
+ncd:	native-code-dll
+endif
+
+# generates byte-code with debugging information
+debug-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dc:	debug-code
+
+debug-code-nolink:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) nolink \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dcnl:	debug-code-nolink
+
+# generates byte-code libraries with debugging information
+debug-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" make_deps=yes \
+				CREATE_LIB=yes \
+				OCAMLFLAGS="-g $(OCAMLFLAGS)" \
+				OCAMLLDFLAGS="-g $(OCAMLLDFLAGS)"
+dcl:	debug-code-library
+
+# generates byte-code for profiling
+profiling-byte-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT) \
+				REAL_RESULT="$(BCRESULT)" PROFILING="y" \
+				make_deps=yes
+pbc:	profiling-byte-code
+
+# generates native-code
+
+profiling-native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(NCRESULT) \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				PROFILING="y" \
+				make_deps=yes
+pnc:	profiling-native-code
+
+# generates byte-code libraries
+profiling-byte-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(BCRESULT).cma \
+				REAL_RESULT="$(BCRESULT)" PROFILING="y" \
+				CREATE_LIB=yes \
+				make_deps=yes
+pbcl:	profiling-byte-code-library
+
+# generates native-code libraries
+profiling-native-code-library:	$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(RES_CLIB) $(NCRESULT).cmxa \
+				REAL_RESULT="$(NCRESULT)" PROFILING="y" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				CREATE_LIB=yes \
+				make_deps=yes
+pncl:	profiling-native-code-library
+
+# packs byte-code objects
+pack-byte-code:			$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) $(BCRESULT).cmo \
+				REAL_RESULT="$(BCRESULT)" \
+				PACK_LIB=yes make_deps=yes
+pabc:	pack-byte-code
+
+# packs native-code objects
+pack-native-code:		$(PRE_TARGETS)
+			$(QUIET)$(MAKE) -r -f $(OCAMLMAKEFILE) \
+				$(NCRESULT).cmx $(NCRESULT).o \
+				REAL_RESULT="$(NCRESULT)" \
+				REAL_OCAMLC="$(OCAMLOPT)" \
+				PACK_LIB=yes make_deps=yes
+panc:	pack-native-code
+
+# generates HTML-documentation
+htdoc:	doc/$(RESULT)/html
+
+# generates Latex-documentation
+ladoc:	doc/$(RESULT)/latex
+
+# generates PostScript-documentation
+psdoc:	doc/$(RESULT)/latex/doc.ps
+
+# generates PDF-documentation
+pdfdoc:	doc/$(RESULT)/latex/doc.pdf
+
+# generates all supported forms of documentation
+doc: htdoc ladoc psdoc pdfdoc
+
+###########################################################################
+# LOW LEVEL RULES
+
+$(REAL_RESULT):		$(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) \
+				$(OCAML_FIND_PACKAGES) $(OCAML_FIND_LINKPKG) \
+				$(ALL_LDFLAGS) $(OBJS_LIBS) -o $@$(EXE) \
+				$(REAL_IMPL)
+
+nolink:			$(REAL_IMPL_INTF) $(OBJ_LINK)
+
+ifdef WIN32
+$(REAL_RESULT).dll:	$(REAL_IMPL_INTF) $(OBJ_LINK)
+			$(CAMLIDLDLL) $(CAMLIDLDLLFLAGS) $(OBJ_LINK) $(CLIBS) \
+				-o $@ $(REAL_IMPL)
+endif
+
+%$(TOPSUFFIX):		$(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS)
+			$(REAL_OCAMLFIND) $(OCAMLMKTOP) \
+				$(OCAML_FIND_PACKAGES) $(OCAML_FIND_LINKPKG) \
+				$(ALL_LDFLAGS) $(OBJS_LIBS) -o $@$(EXE) \
+				$(REAL_IMPL)
+
+.SUFFIXES:		.mli .ml .cmi .cmo .cmx .cma .cmxa .$(EXT_OBJ) \
+                        .mly .di .d .$(EXT_LIB) .idl %.oxridl .c .$(EXT_CXX) .h .so \
+                        .rep .zog .glade
+
+ifndef STATIC
+ifdef MINGW
+$(DLLSONAME):		$(OBJ_LINK)
+			$(CC) $(CFLAGS) $(CFLAGS_WIN32) $(OBJ_LINK) -shared -o $@ \
+			-Wl,--whole-archive $(wildcard $(foreach dir,$(LIBDIRS),$(CLIBS:%=$(dir)/lib%.a))) \
+			 $(OCAMLLIBPATH)/ocamlrun.a \
+			-Wl,--export-all-symbols \
+			-Wl,--no-whole-archive
+else
+ifdef MSVC
+$(DLLSONAME):		$(OBJ_LINK)
+			link /NOLOGO /DLL /OUT:$@ $(OBJ_LINK) \
+			 $(wildcard $(foreach dir,$(LIBDIRS),$(CLIBS:%=$(dir)/%.lib))) \
+			 $(OCAMLLIBPATH)/ocamlrun.lib
+
+else
+$(DLLSONAME):		$(OBJ_LINK)
+			$(OCAMLMKLIB) $(INCFLAGS) $(CLIBFLAGS) \
+				-o $(CLIB_BASE) $(OBJ_LINK) $(CLIBS:%=-l%) \
+				$(OCAMLMKLIB_FLAGS)
+endif
+endif
+endif
+
+ifndef LIB_PACK_NAME
+$(RESULT).cma:		$(REAL_IMPL_INTF) $(MAKEDLL) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -a $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(OCAMLBLDFLAGS) $(REAL_IMPL)
+
+$(RESULT).cmxa $(RESULT).$(EXT_LIB):	$(REAL_IMPL_INTF) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(OCAMLOPT) -a $(ALL_LDFLAGS) $(OBJS_LIBS) \
+				$(OCAMLNLDFLAGS) -o $@ $(REAL_IMPL)
+else
+ifdef BYTE_OCAML
+$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo: $(REAL_IMPL_INTF)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack -o $(LIB_PACK_NAME).cmo $(REAL_IMPL)
+else
+$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmx: $(REAL_IMPL_INTF)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack -o $(LIB_PACK_NAME).cmx $(REAL_IMPL)
+endif
+
+$(RESULT).cma:		$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmo $(MAKEDLL) $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -a $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(OCAMLBLDFLAGS) $(LIB_PACK_NAME).cmo
+
+$(RESULT).cmxa $(RESULT).$(EXT_LIB):	$(LIB_PACK_NAME).cmi $(LIB_PACK_NAME).cmx $(EXTRADEPS) $(RESULTDEPS)
+			$(REAL_OCAMLFIND) $(OCAMLOPT) -a $(ALL_LDFLAGS) $(OBJS_LIBS) \
+				$(OCAMLNLDFLAGS) -o $@ $(LIB_PACK_NAME).cmx
+endif
+
+$(RES_CLIB): 		$(OBJ_LINK)
+ifndef MSVC
+  ifneq ($(strip $(OBJ_LINK)),)
+		      $(AR) rcs $@ $(OBJ_LINK)
+  endif
+else
+  ifneq ($(strip $(OBJ_LINK)),)
+			lib -nologo -debugtype:cv -out:$(RES_CLIB) $(OBJ_LINK)
+  endif
+endif
+
+.mli.cmi: $(EXTRADEPS)
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			else \
+			    echo $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp \"$$pp $(PPFLAGS)\" $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			    $(REAL_OCAMLFIND) $(INTF_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp "$$pp $(PPFLAGS)" $(THREAD_FLAG) $(ANNOT_FLAG) \
+				$(OCAMLFLAGS) $(INCFLAGS) $<; \
+			fi
+
+.ml.cmi .ml.$(EXT_OBJ) .ml.cmx .ml.cmo: $(EXTRADEPS)
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(ALL_OCAMLCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c $(ALL_OCAMLCFLAGS) $<; \
+			else \
+			  echo $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp \"$$pp $(PPFLAGS)\" $(ALL_OCAMLCFLAGS) $<; \
+			  $(REAL_OCAMLFIND) $(REAL_OCAMLC) $(OCAML_FIND_PACKAGES) \
+				-c -pp "$$pp $(PPFLAGS)" $(ALL_OCAMLCFLAGS) $<; \
+			fi
+
+ifdef PACK_LIB
+$(REAL_RESULT).cmo $(REAL_RESULT).cmx $(REAL_RESULT).o: $(REAL_IMPL_INTF) $(OBJ_LINK) $(EXTRADEPS)
+			$(REAL_OCAMLFIND) $(REAL_OCAMLC) -pack $(ALL_LDFLAGS) \
+				$(OBJS_LIBS) -o $@ $(REAL_IMPL)
+endif
+
+.PRECIOUS:		%.ml
+%.ml:			%.mll
+			$(OCAMLLEX) $<
+
+.PRECIOUS:              %.ml %.mli
+%.ml %.mli:             %.mly
+			$(OCAMLYACC) $(YFLAGS) $<
+			$(QUIET)pp=`sed -n -e 's/.*(\*pp \([^*]*\) \*).*/\1/p;q' $<`; \
+			if [ ! -z "$$pp" ]; then \
+			  mv $*.ml $*.ml.temporary; \
+			  echo "(*pp $$pp $(PPFLAGS)*)" > $*.ml; \
+			  cat $*.ml.temporary >> $*.ml; \
+			  rm $*.ml.temporary; \
+			  mv $*.mli $*.mli.temporary; \
+			  echo "(*pp $$pp $(PPFLAGS)*)" > $*.mli; \
+			  cat $*.mli.temporary >> $*.mli; \
+			  rm $*.mli.temporary; \
+			fi
+
+
+.PRECIOUS:		%.ml
+%.ml:			%.rep
+			$(CAMELEON_REPORT) $(CAMELEON_REPORT_FLAGS) -gen $<
+
+.PRECIOUS:		%.ml
+%.ml:			%.zog
+			$(CAMELEON_ZOGGY)  $(CAMELEON_ZOGGY_FLAGS) -impl $< > $@
+
+.PRECIOUS:		%.ml
+%.ml:			%.glade
+			$(OCAML_GLADECC)  $(OCAML_GLADECC_FLAGS) $< > $@
+
+.PRECIOUS:		%.ml %.mli
+%.ml %.mli:		%.oxridl
+			$(OXRIDL) $<
+
+.PRECIOUS:		%.ml %.mli %_stubs.c %.h
+%.ml %.mli %_stubs.c %.h:		%.idl
+			$(CAMLIDL) $(MAYBE_IDL_HEADER) $(IDLFLAGS) \
+				$(CAMLIDLFLAGS) $<
+			$(QUIET)if [ $(NOIDLHEADER) ]; then touch $*.h; fi
+
+.c.$(EXT_OBJ):
+			$(OCAMLC) -c -cc "$(CC)" -ccopt "$(CFLAGS) \
+				$(CPPFLAGS) $(CPPFLAGS_WIN32) \
+				$(CFLAGS_WIN32) $(CINCFLAGS) $(CFLAG_O)$@ " $< 
+
+.$(EXT_CXX).$(EXT_OBJ):
+			$(CXX) -c $(CXXFLAGS) $(CINCFLAGS) $(CPPFLAGS) \
+				-I'$(OCAMLLIBPATH)' \
+				$< $(CFLAG_O)$@
+
+$(MLDEPDIR)/%.d:	%.ml
+			$(QUIET)if [ ! -d $(@D) ]; then mkdir -p $(@D); fi
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				$(DINCFLAGS) $< \> $@; \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				$(DINCFLAGS) $< > $@; \
+			else \
+			  echo $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				-pp \"$$pp $(PPFLAGS)\" $(DINCFLAGS) $< \> $@; \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(OCAML_DEP_PACKAGES) \
+				-pp "$$pp $(PPFLAGS)" $(DINCFLAGS) $< > $@; \
+			fi
+
+$(BCDIDIR)/%.di $(NCDIDIR)/%.di:	%.mli
+			$(QUIET)if [ ! -d $(@D) ]; then mkdir -p $(@D); fi
+			$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+			if [ -z "$$pp" ]; then \
+			  echo $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) $(DINCFLAGS) $< \> $@; \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) $(DINCFLAGS) $< > $@; \
+			else \
+			  echo $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) \
+			    -pp \"$$pp $(PPFLAGS)\" $(DINCFLAGS) $< \> $@; \
+			  $(REAL_OCAMLFIND) $(OCAMLDEP) $(DEPFLAGS) \
+			    -pp "$$pp $(PPFLAGS)" $(DINCFLAGS) $< > $@; \
+			fi
+
+doc/$(RESULT)/html: $(DOC_FILES)
+	rm -rf $@
+	mkdir -p $@
+	$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+	if [ -z "$$pp" ]; then \
+	  echo $(OCAMLDOC) -html -d $@ $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES); \
+	  $(OCAMLDOC) -html -d $@ $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES); \
+	else \
+	  echo $(OCAMLDOC) -pp \"$$pp $(PPFLAGS)\" -html -d $@ $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES); \
+	  $(OCAMLDOC) -pp "$$pp $(PPFLAGS)" -html -d $@ $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES); \
+	fi
+
+doc/$(RESULT)/latex: $(DOC_FILES)
+	rm -rf $@
+	mkdir -p $@
+	$(QUIET)pp=`sed -n -e '/^#/d' -e 's/(\*pp \([^*]*\) \*)/\1/p;q' $<`; \
+	if [ -z "$$pp" ]; then \
+	  echo $(OCAMLDOC) -latex $(OCAMLDOCFLAGS) $(INCFLAGS) \
+	  	$(DOC_FILES) -o $@/doc.tex; \
+	  $(OCAMLDOC) -latex $(OCAMLDOCFLAGS) $(INCFLAGS) $(DOC_FILES) \
+	  	-o $@/doc.tex; \
+	else \
+	  echo $(OCAMLDOC) -pp \"$$pp $(PPFLAGS)\" -latex $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES) -o $@/doc.tex; \
+	  $(OCAMLDOC) -pp "$$pp $(PPFLAGS)" -latex $(OCAMLDOCFLAGS) \
+	  	$(INCFLAGS) $(DOC_FILES) -o $@/doc.tex; \
+	fi
+
+doc/$(RESULT)/latex/doc.ps: doc/$(RESULT)/latex
+	cd doc/$(RESULT)/latex && \
+	  $(LATEX) doc.tex && \
+	  $(LATEX) doc.tex && \
+	  $(DVIPS) $(DVIPSFLAGS) doc.dvi -o $(@F)
+
+doc/$(RESULT)/latex/doc.pdf: doc/$(RESULT)/latex/doc.ps
+	cd doc/$(RESULT)/latex && $(PS2PDF) $(<F)
+
+define make_subproj
+.PHONY:
+subproj_$(1):
+	$$(eval $$(call PROJ_$(1)))
+	$(QUIET)if [ "$(SUBTARGET)" != "all" ]; then \
+	  $(MAKE) -f $(OCAMLMAKEFILE) $(SUBTARGET); \
+	fi
+endef
+
+$(foreach subproj,$(SUBPROJS),$(eval $(call make_subproj,$(subproj))))
+
+.PHONY:
+subprojs: $(SUBPROJS:%=subproj_%)
+
+###########################################################################
+# (UN)INSTALL RULES FOR LIBRARIES
+
+.PHONY: libinstall
+libinstall:	all
+	$(QUIET)printf "\nInstalling library with ocamlfind\n"
+	$(OCAMLFIND) install $(OCAMLFIND_INSTFLAGS) $(RESULT) META $(LIBINSTALL_FILES)
+	$(QUIET)printf "\nInstallation successful.\n"
+
+.PHONY: libuninstall
+libuninstall:
+	$(QUIET)printf "\nUninstalling library with ocamlfind\n"
+	$(OCAMLFIND) remove $(OCAMLFIND_INSTFLAGS) $(RESULT)
+	$(QUIET)printf "\nUninstallation successful.\n"
+
+.PHONY: rawinstall
+rawinstall:	all
+	$(QUIET)printf "\nInstalling library to: $(OCAML_LIB_INSTALL)\n"
+	-install -d $(OCAML_LIB_INSTALL)
+	for i in $(LIBINSTALL_FILES); do \
+	  if [ -f $$i ]; then \
+	    install -c -m 0644 $$i $(OCAML_LIB_INSTALL); \
+	  fi; \
+	done
+	$(QUIET)printf "\nInstallation successful.\n"
+
+.PHONY: rawuninstall
+rawuninstall:
+	$(QUIET)printf "\nUninstalling library from: $(OCAML_LIB_INSTALL)\n"
+	cd $(OCAML_LIB_INSTALL) && rm $(notdir $(LIBINSTALL_FILES))
+	$(QUIET)printf "\nUninstallation successful.\n"
+
+###########################################################################
+# MAINTAINANCE RULES
+
+.PHONY:	clean
+clean::
+	rm -f $(TARGETS) $(TRASH)
+	rm -rf $(BCDIDIR) $(NCDIDIR) $(MLDEPDIR)
+
+.PHONY:	cleanup
+cleanup::
+	rm -f $(NONEXECS) $(TRASH)
+	rm -rf $(BCDIDIR) $(NCDIDIR) $(MLDEPDIR)
+
+.PHONY: clean-doc
+clean-doc::
+	rm -rf doc
+
+.PHONY: nobackup
+nobackup:
+	rm -f *.bak *~ *.dup
+---------------------------------------------------------------------------
+
+                 CFG - Manipulation of Context-Free Grammars
+
+---------------------------------------------------------------------------
+
+                               Prerequisites
+
+             YOU WILL NEED GNU-MAKE TO COMPILE THE SYSTEM WITH
+                         THE DISTRIBUTED MAKEFILES
+
+---------------------------------------------------------------------------
+
+                       Contents of this distribution
+
+Changes             - History of code changes.
+
+LICENSE             - A copy of the "GNU LESSER GENERAL PUBLIC LICENSE"
+
+Makefile            - Top Makefile
+
+OcamlMakefile       - Makefile for easy handling of compilation of not
+                      so easy OCaml-projects.  It generates dependencies
+                      of Ocaml-files automatically, is able to handle
+                      "ocamllex"-, "ocamlyacc"-, IDL- and C-files and
+                      generates native- or byte-code, as executable or
+                      as library - with thread-support if you want!
+
+README              - this file
+
+VERSION             - Current version number of release
+
+lib/                - Implementation of the CFG-library
+
+examples/bnf/       - A simple demonstration of analysing CFGs in BNF-form.
+
+---------------------------------------------------------------------------
+
+                                What is it?
+
+This OCaml-library consists of a set of modules which implement functions
+for manipulating context-free grammars (CFGs) in a purely functional way.
+
+The core-module (cfg_impl.ml) contains a functor which allows the
+parameterization of the main transformation functions with arbitrary grammar
+entities that fill the demanded specification (see the interface in
+"cfg_intf.mli" and the BNF-example).
+
+Thus, you may use this module for any kind of symbol system and any kind of
+representation which can be treated like a CFG.
+
+What it can do:
+
+  Besides building up grammars with the single function "add_prod",
+  some powerful functions allow you to construct new grammars from old
+  ones: "union", "diff", "inter".  These functions behave similarly as
+  with sets.  E.g. "inter" will generate the intersection of all grammar
+  entities (common nonterminals and their common productions).
+
+  Further manipulation functions exist for:
+
+    * Pruning unproductive productions and nonterminals: they contain
+      references to nonexistent symbols.
+
+    * Pruning nonlive entities: such symbols and productions only exist
+      in cyclic derivations from which there is no escape.
+
+    * Pruning unreachable entities: such symbols and productions cannot be
+      reached from the start symbol.
+
+    * Generating a "sane" grammar: combines the above steps. In such
+      grammars each entity is useful.
+
+  Functions for getting information on grammars:
+
+    * Calculating the minimum number of derivations necessary to derive
+      nonterminals and productions. This step is done during pruning of
+      nonlive symbols, because this process allows the easy collection
+      of this information.
+
+    * Because the implementation is purely functional, the library can
+      safely export its internal representation without copying. All this
+      internal data adheres to interfaces of standard libraries and is
+      therefore easy to use (see the example) and does not break easily.
+
+Due to the applicative nature of the library, which allows a lot of sharing
+in memory (persistency), it should be useful for handling very large
+grammars efficiently.
+
+---------------------------------------------------------------------------
+
+                                BNF-Example
+
+The example uses CFGs in traditional BNF-notation, which represents
+terminals and nonterminals as plain strings.
+
+You cannot have several productions that contain the same terminals
+and nonterminals in the same order. The BNF-example uses the unit-type
+for tagging productions, which does not allow differences other than of
+syntactical nature.
+
+Thus, if you want to make a difference between two productions which are
+otherwise structurally equivalent, just parameterize the CFG-module so
+that productions get an additional tag, which makes them unequal.
+
+This allows you, for example, to use the library for doing transformations
+on grammars for abstract syntax, where productions carry additional
+information concerning static semantics (e.g. attributes). Two
+syntactically identical productions may have different semantics then
+and will not be treated the same.
+
+---------------------------------------------------------------------------
+
+                         Documentation of Functions
+
+For details see the comments in "cfg_intf.mli".
+
+---------------------------------------------------------------------------
+
+Up-to-date information (newest release of distribution) can always be
+found at:
+
+  http://www.ocaml.info
+
+---------------------------------------------------------------------------
+
+Enjoy!
+
+Vienna, 2003-04-08
+Markus Mottl
+
+e-mail: markus.mottl@gmail.com
+WWW:    http://www.ocaml.info
+release-1-7-2

examples/bnf/Makefile

+OCAMLMAKEFILE = ../../OCamlMakefile
+
+SOURCES = main.ml
+
+INCDIRS = ../../lib
+LIBDIRS = ../../lib
+LIBS    = cfg
+RESULT  = bnf
+
+-include $(OCAMLMAKEFILE)

examples/bnf/main.ml

+open Format
+open Bnf_spec.Bnf
+open Bnf_pp
+
+let pp_level ppf (ts, grammar) =
+  fprintf ppf "@[<2>Terminals:\n@\n%a@]\n@\n" pp_ts ts;
+  let nts = grammar_contents grammar in
+  fprintf ppf "@[<2>Partial grammar:\n@\n%a@]" pp_nt_map nts
+
+let pp_bounded_level ppf n level =
+  fprintf ppf "@\n@[<2>Level: %d\n@\n%a@]@\n" n pp_level level
+
+let rec pp_bounded_levels_aux ppf n = function
+  | [] -> ()
+  | [level] -> pp_bounded_level ppf n level
+  | level::levels ->
+      pp_bounded_level ppf n level;
+      pp_bounded_levels_aux ppf (n+1) levels
+
+let pp_bounded_levels ppf = pp_bounded_levels_aux ppf 1
+
+let _ =
+  let lexbuf = Lexing.from_channel stdin in
+  let gr = Bnf_parser.start Bnf_lexer.start lexbuf in
+
+  let ts_in_gr = ts_in_grammar gr
+  and nts_in_gr = nts_in_grammar gr
+  and prods_in_gr = prods_in_grammar gr
+  and live_gr =
+    try make_sane_live gr "S"
+    with Not_found ->
+      eprintf "No start symbol <S> specified! Aborting...@\n"; exit 1 in
+
+  let gr_live_gr = grammar_of_live live_gr in
+
+  printf "@[<2>Original grammar:\n@\n%a@]@\n@\n" pp_nt_map
+    (grammar_contents gr);
+
+  printf "@[<2>Terminals removed:\n@\n%a@]@\n@\n" pp_ts
+    (TSet.diff ts_in_gr (ts_in_grammar gr_live_gr));
+
+  printf "@[<2>Nonterminals removed:\n@\n%a@]@\n@\n" pp_nts
+    (NTSet.diff nts_in_gr (nts_in_grammar gr_live_gr));
+
+  printf "@[<2>Productions removed:\n@\n%a@]@\n@\n" pp_prods
+    (ProdSet.diff prods_in_gr (prods_in_grammar gr_live_gr));
+
+  printf "@[<2>Transformed grammar:\n@\n%a@]\n@\n" pp_nt_map
+    (grammar_contents gr_live_gr);
+
+  printf "@[<2>Derivation depth info:\n@\n%a@]@\n@\n@\n" pp_live_nts
+    (deriv_depth_info live_gr);
+
+  printf "@[<2>Depth-bounded derivation:\n%a@]@." pp_bounded_levels
+    (bounded_grammar gr_live_gr "S" 4)

examples/bnf/test.bnf

+<"Also_Useless"> := <"Undefined"> .
+<"B"> := <"Also_Useless"> <"S"> | <"O"> .
+<"C"> := "n1" | "n2" | "n3" | "n4" | "n5" | "n6" | "n7" | "n8" | "n9" .
+<"E"> := <"C"> | <"E"> <"O"> <"E"> | <"V"> .
+<"Eternal1"> := <"Eternal1"> <"Eternal2"> <"Partly_Eternal"> .
+<"Eternal2"> := <"Eternal1"> .
+<"O"> := "add" | "div" | "mul" | "sub" .
+<"Partly_Eternal"> := "not_eternal_but_then_unreachable" | <"Eternal1"> .
+<"S"> := <"E"> | <"Eternal1">
+       | <"Undefined"> <"Not_Productive"> "not_productive" .
+<"Useless"> := "useless" | <"Also_Useless"> | <"Undefined"> .
+<"V"> := "x1" | "x2" | "x3" | "x4" | "x5" | "x6" | "x7" | "x8" | "x9" .
+name="cfg"
+version="1.6.1"
+description="CFG - library for handling context-free grammars"
+requires=""
+archive(byte)="cfg.cma"
+archive(native)="cfg.cmxa"
+OCAMLMAKEFILE = ../OCamlMakefile
+
+SOURCES = \
+  cfg_intf.mli cfg_impl.mli cfg_impl.ml \
+  bnf_spec.mli bnf_spec.ml bnf_parser.mly bnf_lexer.mll bnf_pp.mli bnf_pp.ml
+
+RESULT  = cfg
+
+LIBINSTALL_FILES = \
+  cfg_intf.mli cfg_intf.cmi cfg_impl.cmi \
+  bnf_spec.mli bnf_pp.mli bnf_spec.cmi bnf_pp.cmi bnf_parser.cmi bnf_lexer.cmi \
+  cfg.cma cfg.cmxa cfg.a
+
+all:	
+
+install:	libinstall
+uninstall:	libuninstall
+
+clean::	clean-doc
+
+-include $(OCAMLMAKEFILE)

lib/bnf_lexer.mll

+{
+open Lexing
+open Bnf_parser
+
+let id x = x
+}
+
+let ws = [' ' '\t' '\r' '\n']
+let newline = ('\010' | '\013' | "\013\010")
+
+rule start = parse
+| ws+      { start lexbuf }
+| '<'      { LBRACK }
+| '>'      { RBRACK }
+| '"'
+  {
+    let estr = String.concat "" ("\"" :: esc_string lexbuf) in
+    ID (Scanf.sscanf estr "%S" id)
+  }
+| ":="     { DEF }
+| '|'      { PIPE }
+| '.'      { DOT }
+| eof      { EOF }
+
+and esc_string = parse
+| '"'                  { ["\""] }
+| "\\\\"               { "\\\\" :: esc_string lexbuf }
+| "\\\""               { "\\\"" :: esc_string lexbuf }
+| [^ '\\' '"']+ as str { str :: esc_string lexbuf }
+| eof                  { failwith "bnf_lexer: eof in string" }

lib/bnf_parser.mly

+%{
+open Bnf_spec.Bnf
+open Spec
+%}
+
+%token LBRACK RBRACK DEF PIPE DOT EOF
+%token <string> ID
+
+%start start
+%type <Bnf_spec.Bnf.grammar> start
+
+%%
+
+start
+  : EOF { empty }
+  | defs EOF { $1 }
+
+defs
+  : def { $1 }
+  | defs def { union $1 $2 }
+
+def : nt DEF prods DOT { List.fold_left (fun a -> add_prod a $1 ()) empty $3 }
+
+prods
+  : prod { [List.rev $1] }
+  | prods PIPE prod { (List.rev $3) :: $1 }
+
+prod
+  : symbol { [$1] }
+  | prod symbol { $2 :: $1 }
+
+symbol
+  : ID { T $1 }
+  | nt { NT $1 }
+
+nt : LBRACK ID RBRACK { $2 }
+open Format
+open Bnf_spec.Bnf
+open Spec
+
+let before_first iterator f_begin f_end fall =
+  let start = ref true in
+  let do_el el =
+    if !start then (start := false; fall el)
+    else (
+      f_begin ();
+      let res = fall el in
+      f_end ();
+      res) in
+  iterator do_el
+
+let string_of_t t =
+  let str = String.escaped t in
+  let len = String.length str in
+  let res = String.make (len + 2) '"' in
+  String.blit str 0 res 1 len;
+  res
+
+let string_of_nt nt =
+  let str = String.escaped nt in
+  let len = String.length str in
+  let res = String.make (len + 4) '"' in
+  res.[0] <- '<';
+  res.[len + 3] <- '>';
+  String.blit str 0 res 2 len;
+  res
+
+let string_of_symbol = function
+  | T t -> string_of_t t
+  | NT nt -> string_of_nt nt
+let rec pp_prod ppf = function
+  | [] -> ()
+  | [h] -> fprintf ppf "%s" (string_of_symbol h)
+  | h::t -> fprintf ppf "%s@ " (string_of_symbol h); pp_prod ppf t
+
+let pp_prods ppf =
+  before_first
+    ProdSet.iter
+    (fun _ -> fprintf ppf "@ @[| ")
+    (pp_close_box ppf)
+    (fun (_, sym_list) -> fprintf ppf "@[%a@]" pp_prod sym_list)
+
+let pp_live_prods ppf =
+  before_first
+    ProdMap.iter
+    (fun _ -> fprintf ppf "@ @[| ")
+    (pp_close_box ppf)
+    (fun (_, sym_list) n -> fprintf ppf "@[%a (%d)@]" pp_prod sym_list n)
+
+let pp_nt ppf nt =
+  fprintf ppf "@[<0>%s @[<1>:= %a .@]@]" (string_of_nt nt) pp_prods
+
+let pp_live_nt ppf nt (d, prods) =
+  fprintf ppf "@[<0>%s (%d) @[<1>:= %a .@]@]"
+    (string_of_nt nt) d pp_live_prods prods
+
+let nop _ = ()
+
+let pp_nt_map ppf = before_first NTMap.iter force_newline nop (pp_nt ppf)
+let pp_live_nts ppf = before_first NTMap.iter force_newline nop (pp_live_nt ppf)
+
+let pp_ts ppf =
+  before_first TSet.iter force_newline nop
+    (fun t -> pp_print_string ppf (string_of_t t))
+
+let pp_nts ppf =
+  before_first NTSet.iter force_newline nop
+    (fun nt -> pp_print_string ppf (string_of_nt nt))
+
+let pp_prods ppf =
+  before_first ProdSet.iter force_newline nop (fun (_, sl) -> pp_prod ppf sl)
+(*
+   CFG - Manipulation of Context-Free Grammars
+
+   Copyright (C) 2000-2003  Markus Mottl
+   email: markus.mottl@gmail.com
+   WWW:   http://www.ocaml.info
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*)
+
+(** Pretty-printing functions for BNF-grammars *)
+
+open Format
+open Bnf_spec
+open Bnf
+open Spec
+
+val pp_prod : formatter -> symbol list -> unit
+(** [pp_prod ppf syms] prettyprint symbols list [syms] using prettyprinter
+    [ppf]. *)
+
+val pp_live_prods : formatter -> int ProdMap.t -> unit
+(** [pp_live_prods ppf syms] prettyprint live production map [pm] using
+    prettyprinter [ppf]. *)
+
+val pp_nt : formatter -> string -> ProdSet.t -> unit
+(** [pp_nt ppf nt ps] prettyprint nonterminal [nt] and its production set
+    [ps] using prettyprinter [ppf]. *)
+
+val pp_live_nt : formatter -> string -> int * int ProdMap.t -> unit
+(** [pp_nt ppf nt di] prettyprint live nonterminal [nt] and its derivation
+    information [di] using prettyprinter [ppf]. *)
+
+val pp_nt_map : formatter -> ProdSet.t NTMap.t -> unit
+(** [pp_nt_map ppf nts] prettyprint map of nonterminals [nts] using
+    prettyprinter [ppf]. *)
+
+val pp_live_nts : formatter -> (int * int ProdMap.t) NTMap.t -> unit
+(** [pp_live_nts ppf nt_di] prettyprint map of nonterminal derivation
+    information [nt_di] using prettyprinter [ppf]. *)
+
+val pp_ts : formatter -> TSet.t -> unit
+(** [pp_ts ppf ts] prettyprint set of terminals [ts] using prettyprinter
+    [ppf]. *)
+
+val pp_nts : formatter -> NTSet.t -> unit
+(** [pp_nts ppf nts] prettyprint set of nonterminals [nts] using
+    prettyprinter [ppf]. *)
+
+val pp_prods : formatter -> ProdSet.t -> unit
+(** [pp_prods ppf prods] prettyprint set of productions [prods] using
+    prettyprinter [ppf]. *)
+module Spec = struct
+  type t = string
+  type nt = string
+  type prod = unit
+
+  type symbol = NT of nt | T of t
+
+  let compare_t = compare
+  let compare_nt = compare
+  let compare_prod = compare
+end
+
+module Bnf = Cfg_impl.Make (Spec)
+open Cfg_intf
+
+module Spec :
+  SPEC
+    with type t = string
+    with type nt = string
+    with type prod = unit
+
+module Bnf : CFG with module Spec = Spec
+(*
+   CFG - Manipulation of Context-Free Grammars
+
+   Copyright (C) 2000-2003  Markus Mottl
+   email: markus.mottl@gmail.com
+   WWW:   http://www.ocaml.info
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*)
+
+(* $Id: cfg_impl.ml,v 1.8 2006/01/16 23:57:58 mottl Exp $ *)
+
+open Cfg_intf
+
+module Make (Spec_ : SPEC) : (CFG with module Spec = Spec_) = struct
+  module MySet = Set.Make
+  module MyMap = Map.Make
+
+  module Spec = Spec_
+  open Spec
+
+  let compare_syms s1 s2 =
+    match s1, s2 with
+    | NT nt1, NT nt2 -> compare_nt nt1 nt2
+    | T t1, T t2 -> compare_t t1 t2
+    | NT _, T _ -> 1
+    | T _, NT _ -> -1
+
+  let rec compare_lists cf l1 l2 =
+    match l1, l2 with
+    | [], [] -> 0
+    | _, [] -> 1
+    | [], _ -> -1
+    | h1::t1, h2::t2 ->
+        let c = cf h1 h2 in
+        if c = 0 then compare_lists cf t1 t2 else c
+
+  let compare_prod (p1, sl1) (p2, sl2) =
+    let c = compare_prod p1 p2 in
+    if c = 0 then compare_lists compare_syms sl1 sl2 else c
+
+  module TSet = MySet (struct type t = Spec.t let compare = compare_t end)
+  module TMap = MyMap (struct type t = Spec.t let compare = compare_t end)
+  module NTSet = MySet (struct type t = nt let compare = compare_nt end)
+  module NTMap = MyMap (struct type t = nt let compare = compare_nt end)
+
+  module ProdSet = MySet (struct type t = prod * symbol list
+                                 let compare = compare_prod end)
+
+  module ProdMap = MyMap (struct type t = prod * symbol list
+                                 let compare = compare_prod end)
+
+  type grammar = ProdSet.t NTMap.t
+  type live_grammar = (int * int ProdMap.t) NTMap.t
+
+  let empty = NTMap.empty
+
+  let maybe_get_prods gr nt =
+    try NTMap.find nt gr
+    with Not_found -> ProdSet.empty
+
+  let add_prod gr nt pr sl =
+    if sl = [] then invalid_arg "Cfg.add_prod: symbol list empty!"
+    else NTMap.add nt (ProdSet.add (pr, sl) (maybe_get_prods gr nt)) gr
+
+  let remove_nt gr nt = NTMap.remove nt gr
+
+  let union_aux k v acc =
+    try NTMap.add k (ProdSet.union (NTMap.find k acc) v) acc
+    with Not_found -> NTMap.add k v acc
+
+  let union gr1 gr2 = NTMap.fold union_aux gr2 gr1
+
+  let diff_aux k v acc =
+    try
+      let prods_diff = ProdSet.diff (NTMap.find k acc) v in
+      if ProdSet.is_empty prods_diff then NTMap.remove k acc
+      else NTMap.add k prods_diff acc
+    with Not_found -> acc
+
+  let diff gr1 gr2 = NTMap.fold diff_aux gr2 gr1
+
+  let inter_aux k v (res, gr as acc) =
+    try
+      let new_gr = NTMap.remove k gr
+      and k_prods = NTMap.find k gr in
+      let prods_inter = ProdSet.inter k_prods v in
+      if ProdSet.is_empty prods_inter then res, new_gr
+      else NTMap.add k prods_inter res, new_gr