src/png/scripts/makefile.beos

# makefile for libpng on BeOS x86 ELF with gcc
# modified from makefile.linux by Sander Stoks
# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
# Copyright (C) 1999 Greg Roelofs
# Copyright (C) 1996, 1997 Andreas Dilger
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h

# Library name:
LIBNAME=libpng15
PNGMAJ = 15

# Shared library names:
LIBSO=$(LIBNAME).so
LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
LIBSOREL=$(LIBSOMAJ).$(RELEASE)
OLDSO=libpng.so

# Utilities:
CC=gcc
AR_RC=ar rc
MKDIR_P=mkdir -p
LN_SF=ln -sf
RANLIB=ranlib
RM_F=/bin/rm -f

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

ALIGN=
# For i386:
# ALIGN=-malign-loops=2 -malign-functions=2

WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
	-Wmissing-declarations -Wtraditional -Wcast-align \
	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion

# On BeOS, -O1 is actually better than -O3.  This is a known bug but it's
# still here in R4.5
CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz

# where make install puts libpng.a, libpng15.so*, and png.h
prefix=/usr/local
exec_prefix=$(prefix)
INCPATH=$(prefix)/include
LIBPATH=$(exec_prefix)/lib
MANPATH=$(prefix)/man
BINPATH=$(exec_prefix)/bin

# override DESTDIR= on the make install command line to easily support
# installing into a temporary location.  Example:
#
#    make install DESTDIR=/tmp/build/libpng
#
# If you're going to install into a temporary location
# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
# you execute make install.
DESTDIR=

DB=$(DESTDIR)$(BINPATH)
DI=$(DESTDIR)$(INCPATH)
DL=$(DESTDIR)$(LIBPATH)
DM=$(DESTDIR)$(MANPATH)

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

OBJSDLL = $(OBJS)

.SUFFIXES:      .c .o

all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config

# try include scripts/pnglibconf.mak for more options
pnglibconf.h: scripts/pnglibconf.h.prebuilt
	cp scripts/pnglibconf.h.prebuilt $@

libpng.a: $(OBJS)
	$(AR_RC) $@ $(OBJS)
	$(RANLIB) $@

libpng.pc:
	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
	-e s!@exec_prefix@!$(exec_prefix)! \
	-e s!@libdir@!$(LIBPATH)! \
	-e s!@includedir@!$(INCPATH)! \
	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

libpng-config:
	( cat scripts/libpng-config-head.in; \
	echo prefix=\"$(prefix)\"; \
	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
	echo libs=\"-lpng15 -lz \"; \
	cat scripts/libpng-config-body.in ) > libpng-config
	chmod +x libpng-config

$(LIBSO): $(LIBSOMAJ)
	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
	cp $(LIBSO)* /boot/home/config/lib

$(LIBSOMAJ): $(OBJSDLL)
	$(CC) -nostart -Wl,-soname,$(LIBSOMAJ) -o \
	$(LIBSOMAJ) $(OBJSDLL) $(LDFLAGS)

pngtest: pngtest.o $(LIBSO)
	$(CC) -L$(ZLIBLIB) -L. -lz -lpng15 -o pngtest pngtest.o

test: pngtest
	./pngtest

install-headers: png.h pngconf.h pnglibconf.h
	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
	cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
	chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
	-@$(RM_F) $(DI)/libpng
	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)

install-static: install-headers libpng.a
	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
	cp libpng.a $(DL)/$(LIBNAME).a
	chmod 644 $(DL)/$(LIBNAME).a
	-@$(RM_F) $(DL)/libpng.a
	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)

install-shared: install-headers $(LIBSOMAJ) libpng.pc
	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
	-@$(RM_F) $(DL)/$(LIBSO)
	-@$(RM_F) $(DL)/$(LIBSOREL)
	-@$(RM_F) $(DL)/$(OLDSO)
	cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
	chmod 755 $(DL)/$(LIBSOREL)
	(cd $(DL); \
	$(LN_SF) $(LIBSOREL) $(LIBSO); \
	$(LN_SF) $(LIBSO) $(OLDSO))
	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)

install-man: libpng.3 libpngpf.3 png.5
	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
	-@$(RM_F) $(DM)/man3/libpng.3
	-@$(RM_F) $(DM)/man3/libpngpf.3
	cp libpng.3 $(DM)/man3
	cp libpngpf.3 $(DM)/man3
	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
	-@$(RM_F) $(DM)/man5/png.5
	cp png.5 $(DM)/man5

install-config: libpng-config
	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
	-@$(RM_F) $(DB)/libpng-config
	-@$(RM_F) $(DB)/$(LIBNAME)-config
	cp libpng-config $(DB)/$(LIBNAME)-config
	chmod 755 $(DB)/$(LIBNAME)-config
	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)

install: install-static install-shared install-man install-config

# If you installed in $(DESTDIR), test-installed won't work until you
# move the library to its final location.  Use test-dd to test it
# before then.

test-dd:
	echo
	echo Testing installed dynamic shared library in $(DL).
	$(CC) -I$(DI) $(CFLAGS) \
	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
	   -L$(DL) -L$(ZLIBLIB) -Wl,-rpath $(ZLIBLIB):$(DL) \
	   -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
	./pngtestd pngtest.png

test-installed:
	$(CC) $(CFLAGS) \
	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
	   -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
	   -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
	./pngtesti pngtest.png

clean:
	$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
	$(LIBSO) $(LIBSOMAJ)* pngtesti \
	pnglibconf.h libpng.pc

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

png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h

pngtest.o: png.h pngconf.h pnglibconf.h
Commit	Line	Data
	1	# makefile for libpng on BeOS x86 ELF with gcc
	2	# modified from makefile.linux by Sander Stoks
	3	# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
	4	# Copyright (C) 1999 Greg Roelofs
	5	# Copyright (C) 1996, 1997 Andreas Dilger
	6	#
	7	# This code is released under the libpng license.
	8	# For conditions of distribution and use, see the disclaimer
	9	# and license in png.h
	10
	11	# Library name:
	12	LIBNAME=libpng15
	13	PNGMAJ = 15
	14
	15	# Shared library names:
	16	LIBSO=$(LIBNAME).so
	17	LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
	18	LIBSOREL=$(LIBSOMAJ).$(RELEASE)
	19	OLDSO=libpng.so
	20
	21	# Utilities:
	22	CC=gcc
	23	AR_RC=ar rc
	24	MKDIR_P=mkdir -p
	25	LN_SF=ln -sf
	26	RANLIB=ranlib
	27	RM_F=/bin/rm -f
	28
	29	# Where the zlib library and include files are located
	30	ZLIBLIB=/usr/local/lib
	31	ZLIBINC=/usr/local/include
	32
	33	ALIGN=
	34	# For i386:
	35	# ALIGN=-malign-loops=2 -malign-functions=2
	36
	37	WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
	38	-Wmissing-declarations -Wtraditional -Wcast-align \
	39	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
	40
	41	# On BeOS, -O1 is actually better than -O3. This is a known bug but it's
	42	# still here in R4.5
	43	CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
	44	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
	45	# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
	46	LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
	47
	48	# where make install puts libpng.a, libpng15.so*, and png.h
	49	prefix=/usr/local
	50	exec_prefix=$(prefix)
	51	INCPATH=$(prefix)/include
	52	LIBPATH=$(exec_prefix)/lib
	53	MANPATH=$(prefix)/man
	54	BINPATH=$(exec_prefix)/bin
	55
	56	# override DESTDIR= on the make install command line to easily support
	57	# installing into a temporary location. Example:
	58	#
	59	# make install DESTDIR=/tmp/build/libpng
	60	#
	61	# If you're going to install into a temporary location
	62	# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
	63	# you execute make install.
	64	DESTDIR=
	65
	66	DB=$(DESTDIR)$(BINPATH)
	67	DI=$(DESTDIR)$(INCPATH)
	68	DL=$(DESTDIR)$(LIBPATH)
	69	DM=$(DESTDIR)$(MANPATH)
	70
	71	OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
	72	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
	73	pngwtran.o pngmem.o pngerror.o pngpread.o
	74
	75	OBJSDLL = $(OBJS)
	76
	77	.SUFFIXES: .c .o
	78
	79	all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
	80
	81	# try include scripts/pnglibconf.mak for more options
	82	pnglibconf.h: scripts/pnglibconf.h.prebuilt
	83	cp scripts/pnglibconf.h.prebuilt $@
	84
	85	libpng.a: $(OBJS)
	86	$(AR_RC) $@ $(OBJS)
	87	$(RANLIB) $@
	88
	89	libpng.pc:
	90	cat scripts/libpng.pc.in \| sed -e s!@prefix@!$(prefix)! \
	91	-e s!@exec_prefix@!$(exec_prefix)! \
	92	-e s!@libdir@!$(LIBPATH)! \
	93	-e s!@includedir@!$(INCPATH)! \
	94	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
	95
	96	libpng-config:
	97	( cat scripts/libpng-config-head.in; \
	98	echo prefix=\"$(prefix)\"; \
	99	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
	100	echo libs=\"-lpng15 -lz \"; \
	101	cat scripts/libpng-config-body.in ) > libpng-config
	102	chmod +x libpng-config
	103
	104	$(LIBSO): $(LIBSOMAJ)
	105	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
	106	cp $(LIBSO)* /boot/home/config/lib
	107
	108	$(LIBSOMAJ): $(OBJSDLL)
	109	$(CC) -nostart -Wl,-soname,$(LIBSOMAJ) -o \
	110	$(LIBSOMAJ) $(OBJSDLL) $(LDFLAGS)
	111
	112	pngtest: pngtest.o $(LIBSO)
	113	$(CC) -L$(ZLIBLIB) -L. -lz -lpng15 -o pngtest pngtest.o
	114
	115	test: pngtest
	116	./pngtest
	117
	118	install-headers: png.h pngconf.h pnglibconf.h
	119	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
	120	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
	121	cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
	122	chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
	123	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
	124	-@$(RM_F) $(DI)/libpng
	125	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
	126
	127	install-static: install-headers libpng.a
	128	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
	129	cp libpng.a $(DL)/$(LIBNAME).a
	130	chmod 644 $(DL)/$(LIBNAME).a
	131	-@$(RM_F) $(DL)/libpng.a
	132	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
	133
	134	install-shared: install-headers $(LIBSOMAJ) libpng.pc
	135	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
	136	-@$(RM_F) $(DL)/$(LIBSO)
	137	-@$(RM_F) $(DL)/$(LIBSOREL)
	138	-@$(RM_F) $(DL)/$(OLDSO)
	139	cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
	140	chmod 755 $(DL)/$(LIBSOREL)
	141	(cd $(DL); \
	142	$(LN_SF) $(LIBSOREL) $(LIBSO); \
	143	$(LN_SF) $(LIBSO) $(OLDSO))
	144	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
	145	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
	146	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
	147	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
	148	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
	149	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
	150
	151	install-man: libpng.3 libpngpf.3 png.5
	152	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
	153	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
	154	-@$(RM_F) $(DM)/man3/libpng.3
	155	-@$(RM_F) $(DM)/man3/libpngpf.3
	156	cp libpng.3 $(DM)/man3
	157	cp libpngpf.3 $(DM)/man3
	158	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
	159	-@$(RM_F) $(DM)/man5/png.5
	160	cp png.5 $(DM)/man5
	161
	162	install-config: libpng-config
	163	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
	164	-@$(RM_F) $(DB)/libpng-config
	165	-@$(RM_F) $(DB)/$(LIBNAME)-config
	166	cp libpng-config $(DB)/$(LIBNAME)-config
	167	chmod 755 $(DB)/$(LIBNAME)-config
	168	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
	169
	170	install: install-static install-shared install-man install-config
	171
	172	# If you installed in $(DESTDIR), test-installed won't work until you
	173	# move the library to its final location. Use test-dd to test it
	174	# before then.
	175
	176	test-dd:
	177	echo
	178	echo Testing installed dynamic shared library in $(DL).
	179	$(CC) -I$(DI) $(CFLAGS) \
	180	`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
	181	-L$(DL) -L$(ZLIBLIB) -Wl,-rpath $(ZLIBLIB):$(DL) \
	182	-o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
	183	./pngtestd pngtest.png
	184
	185	test-installed:
	186	$(CC) $(CFLAGS) \
	187	`$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
	188	-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
	189	-o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
	190	./pngtesti pngtest.png
	191
	192	clean:
	193	$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
	194	$(LIBSO) $(LIBSOMAJ)* pngtesti \
	195	pnglibconf.h libpng.pc
	196
	197	# DO NOT DELETE THIS LINE -- make depend depends on it.
	198
	199	png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	200	pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	201	pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	202	pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	203	pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	204	pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	205	pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	206	pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	207	pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	208	pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	209	pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	210	pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	211	pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	212	pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	213	pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
	214
	215	pngtest.o: png.h pngconf.h pnglibconf.h