# Copyright 2010 Nicolas Limare <nicolas.limare@cmla.ens-cachan.fr>
#
# 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.
#
# This makefile imports and compiles libraries libraries
# for local use in static form

LIBPNG_LIB	= $(LIB_DIR)/libpng.a
LIBPNG_INC	= $(addprefix $(INC_DIR)/, png.h pngconf.h)
LIBPNG_FILES	= $(LIBPNG_LIB) $(LIBPNG_INC)
LIBPNG_DIR	= libpng-1.4.3
LIBPNG_ARC	= libpng-1.4.3.tar.gz
LIBPNG_URL	= http://sourceforge.net/projects/libpng/files/01-libpng-master/1.4.3/libpng-1.4.3.tar.gz/download

#
# LIBPNG
#

.PHONY	: libpng 
libpng	: $(LIBPNG_FILES)

$(LIBPNG_FILES)	: $(LIB_DIR) $(INC_DIR)
$(LIB_DIR)/libpng.a	: $(LIBPNG_DIR)/lib/libpng.a
$(INC_DIR)/png.h	: $(LIBPNG_DIR)/png.h
$(INC_DIR)/pngconf.h	: $(LIBPNG_DIR)/pngconf.h

$(LIBPNG_DIR)/lib/libpng.a	: $(LIBPNG_DIR) $(ZLIB_FILES)
	cd ./$(LIBPNG_DIR)/; ./configure \
		--enable-static \
		--disable-shared \
		--prefix=$$PWD
	$(MAKE) -C $(LIBPNG_DIR) libpng14.la ZLIBLIB=../ ZLIBINC=../
	$(MAKE) -C $(LIBPNG_DIR) install
$(LIBPNG_DIR)/png.h	: $(LIBPNG_DIR)
$(LIBPNG_DIR)/pngconf.h	: $(LIBPNG_DIR)

$(LIBPNG_DIR) : $(LIBPNG_ARC)
	tar xvzf $<
	touch $@

$(LIBPNG_ARC) :
	curl -L $(LIBPNG_URL) > $@