# makefile for libpng on (linux) ELF
# Copyright (C) 1996, 1997 Andreas Dilger
# For conditions of distribution and use, see copyright notice in png.h

CC=gcc

# Where the zlib library and include files are located
#ZLIBLIB=/usr/local/lib
#ZLIBINC=/usr/local/include
ZLIBLIB=../zlib
ZLIBINC=../zlib

WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
         -Wmissing-declarations -Wtraditional -Wcast-align \
         -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -malign-loops=2 -malign-functions=2 -fPIC #$(WARNMORE) -g -DPNG_DEBUG=5
LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz -lm

RANLIB=ranlib
#RANLIB=echo

PNGMAJ = 1
PNGMIN = 1.0
PNGVER = $(PNGMAJ).$(PNGMIN)

# where make install puts libpng.a, libpng.so*, and png.h
prefix=/usr/local
INCPATH=$(prefix)/include
LIBPATH=$(prefix)/lib

OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
       pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
       pngwtran.o pngmem.o pngerror.o pngpread.o

all: libpng.so pngtest

libpng.a: $(OBJS)
	ar rc $@  $(OBJS)
	$(RANLIB) $@

libpng.so: libpng.so.$(PNGMAJ)
	ln -sf libpng.so.$(PNGMAJ) libpng.so

libpng.so.$(PNGMAJ): libpng.so.$(PNGVER)
	ln -sf libpng.so.$(PNGVER) libpng.so.$(PNGMAJ)

libpng.so.$(PNGVER): $(OBJS)
	gcc -shared -Wl,-soname,libpng.so.$(PNGMAJ) $(OBJS) -o libpng.so.$(PNGVER)

pngtest: pngtest.o libpng.so
	$(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)

test: pngtest
	./pngtest

install: libpng.so.$(PNGVER)
	-@mkdir $(INCPATH) $(LIBPATH)
	cp png.h pngconf.h $(INCPATH)
	chmod 644 $(INCPATH)/png.h $(INCPATH)/pngconf.h
	cp libpng.so.$(PNGVER) $(LIBPATH)
	chmod 755 $(LIBPATH)/libpng.so.$(PNGVER)
	-@/bin/rm $(LIBPATH)/libpng.so.$(PNGMAJ) $(LIBPATH)/libpng.so
	(cd $(LIBPATH); ln -sf libpng.so.$(PNGVER) libpng.so.$(PNGMAJ); \
	 ln -sf libpng.so.$(PNGMAJ) libpng.so)

clean:
	rm -f *.o libpng.a libpng.so* pngtest pngout.png

# DO NOT DELETE THIS LINE -- make depend depends on it.

png.o: png.h pngconf.h
pngerror.o: png.h pngconf.h
pngrio.o: png.h pngconf.h
pngwio.o: png.h pngconf.h
pngmem.o: png.h pngconf.h
pngset.o: png.h pngconf.h
pngget.o: png.h pngconf.h
pngread.o: png.h pngconf.h
pngrtran.o: png.h pngconf.h
pngrutil.o: png.h pngconf.h
pngtest.o: png.h pngconf.h
pngtrans.o: png.h pngconf.h
pngwrite.o: png.h pngconf.h
pngwtran.o: png.h pngconf.h
pngwutil.o: png.h pngconf.h
pngpread.o: png.h pngconf.h