# Copyright 2010 Nicolas Limare <nicolas.limare@cmla.ens-cachan.fr>
#		 Jose-Luis Lisani <joseluis.lisani@uib.es>
#
# Copying and distribution of this file, with or without
# modification, are permitted in any medium without royalty provided
# the copyright notice and this notice are preserved.  This file is
# offered as-is, without any warranty.


# C source code
CSRC	= io_png/io_png.c
# C++ source code
CXXSRC	= rgbprocess.cpp rgbprocess_lib.cpp cppcode/mdmath.cpp cppcode/miscIPOL.cpp \
	cppcode/colorfilteringIPOL.cpp cppcode/rgbcubeIPOL.cpp

# all source code
SRC	= $(CSRC) $(CXXSRC)

# C objects
COBJ	= $(CSRC:.c=.o)
# C++ objects
CXXOBJ	= $(CXXSRC:.cpp=.o)
# all objects
OBJ	= $(COBJ) $(CXXOBJ)
# binary target
BIN	= rgbprocess

default	: $(BIN)


# C compilation flags
CFLAGS	= -g
# C++ compilation flags
CXXFLAGS	= -g

# link flags
LDFLAGS	= -lpng -lm

# use local embedded libraries with `make LOCAL_LIBS=1`
ifdef LOCAL_LIBS
# library location
LIBDIR = io_png/libs/build/lib
INCDIR = io_png/libs/build/include
# libpng is required
LIBDEPS += libpng
# compile options to use the local libpng header
CFLAGS 	+= -I$(INCDIR) -D_LOCAL_LIBS
# link options to use the local libraries
LDFLAGS = $(LIBDIR)/libpng.a $(LIBDIR)/libz.a -lm
# io_png.o needs png.h
io_png/io_png.o	:  $(LIBDEPS)
endif

# build the local png library
.PHONY	: libpng
libpng	:
	$(MAKE) -C io_png/libs libpng

# partial compilation of C source code
%.o: %.c %.h
	$(CC) -c -o $@  $< $(CFLAGS)
# partial compilation of C++ source code
%.o: %.cpp %.h
	$(CXX) -c -o $@  $< $(CXXFLAGS)

# link all the opject code
$(BIN): $(OBJ) $(LIBDEPS)
	$(CXX) -o $@ $(OBJ) $(LDFLAGS)

# housekeeping
.PHONY	: clean distclean
clean	:
	$(RM) $(OBJ)
	$(MAKE) -C ./io_png/libs $@
distclean	: clean
	$(RM) $(BIN)
	$(MAKE) -C ./io_png/libs $@