# SWIG support
#
# Contributed by:
#     "Peter J. MASON" <peter.mason@retriever.com.au>
#
# Not independently tested.

.PHONY	:	install-swig
#.PHONY	:	install-swig.target

#install-swig	:: install-swig.target

# Make sure we can find SWIG input files
#
vpath %.i $(SRCDIR) $(SRCDIRS)

# Allow user to specify SWIG binary location
#
ifeq	"$(origin SWIG)" "undefined"
SWIG	:= swig
endif

# Stop redundant makeit checks on SWIG input files
#
%.i		:

# List makeit subdirectory and current directory in include search path
#
ifeq "$(filter -I.,$(CPPFLAGS))" ""
override CPPFLAGS += -I.
endif

ifeq "$(filter -I./$(MK),$(CPPFLAGS))" ""
override CPPFLAGS += -I./$(MK)
endif

# Process  options and form commandline args
#	SWIG_OPTIONS include "python", "shadow", "c++"
#
ifeq	"$(origin SWIG_FLAGS)" "undefined"
SWIG_FLAGS	:=
endif

ifneq "$(filter python,$(SWIG_OPTIONS))" ""

override REQUIRE	+= python
SWIG_FLAGS			+= -python

# Build up the shared object name
# If "shadow" specified then name has 'c' in the middle
#
_swig_SHLIB				:= $(LIBRARY)
ifneq "$(filter shadow,$(SWIG_OPTIONS))" ""
override _swig_SHADOW	:= YES
SWIG_FLAGS				+= -shadow
_swig_SHLIB				:= $(addsuffix c,$(_swig_SHLIB))
endif
_swig_SHLIB				:= $(addsuffix module,$(_swig_SHLIB))

endif

ifneq "$(filter c++,$(SWIG_OPTIONS))" ""
override REQUIRE	+= cc
SWIG_FLAGS			+= -c++
endif

# Module name is taken from LIBRARY variable supplied to us,
#
SWIG_FLAGS		+= -module $(LIBRARY)


# Calculate language src
#
_swig_real_SRC		:= $(filter-out $(EXCLUDE),$(filter %.i,$(SRCFILES)))
_swig_generated_SRC	:= $(filter-out $(EXCLUDE), \
  $(addprefix $(MK)/,$(_swig_generated_SRC)))

# Generate stems for src
#
_swig_real_SRC_STEMS		:= $(basename $(_swig_real_SRC))
_swig_generated_SRC_STEMS	:= $(notdir $(basename $(_swig_generated_SRC)))

# Let C/C++ module know about generated src files
#
_cc_generated_SRC	+= $(addsuffix _wrap.cc, \
  $(_swig_real_SRC_STEMS) $(_swig_generated_SRC_STEMS))

$(MK)/$(LIBRARY)_wrap.cc \
$(MK)/$(LIBRARY).py	: $(LIBRARY).i
	$(SWIG) $(SWIG_FLAGS) -o $@ $< 

# Setup library by different name
#
$(LIBDIR)/$(_swig_SHLIB)$(SHLEXT)	:
	$(RM) $@
	ln -s lib$(LIBRARY)$(SHLEXT) $@

$(LIBDIR)/$(LIBRARY).py	: $(MK)/$(LIBRARY).py
	$(INSTALL.LIB) $(MK)/$(LIBRARY).py $@

#install-lib.always	:: install-swig
#install-swig		:: install-swig.target
#install-swig.target :: $(LIBDIR)/$(_swig_SHLIB)$(SHLEXT) $(LIBDIR)/$(LIBRARY).py

install				: install-swig
install-swig	:: install-lib
install-swig	:: $(LIBDIR)/$(_swig_SHLIB)$(SHLEXT) $(LIBDIR)/$(LIBRARY).py