# makefile for libpng.a and libpng12.so on Linux ELF with gcc

# Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs

# and Glenn Randers-Pehrson

# Copyright (C) 1996, 1997 Andreas Dilger

# For conditions of distribution and use, see copyright notice in png.h

# Modified for Debian by Junichi Uekawa and Josselin Mouette

# Major modifications are:

#    * link libpng explicitly with libz and libm

#    * $(OLDSO).3 is a symlink rather than a different library

#    * versioned symbols

# Library name:

LIBNAME = libpng12

PNGMAJ = 0

PNGMIN = 1.2.32

PNGVER = $(PNGMAJ).$(PNGMIN)

# Shared library names:

LIBSO=$(LIBNAME).so

LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)

LIBSOVER=$(LIBNAME).so.$(PNGVER)

OLDSO=libpng.so

OLDSOMAJ=libpng.so.3

OLDSOVER=libpng.so.3.$(PNGMIN)

# Utilities:

AR_RC=ar rc

CC=gcc

MKDIR_P=mkdir -p

LN_SF=ln -sf

RANLIB=ranlib

RM_F=/bin/rm -f

# where "make install" puts libpng12.a, libpng12.so*,

# libpng12/png.h and libpng12/pngconf.h

# Prefix must be a full pathname.

prefix=/usr/local

exec_prefix=$(prefix)

# Where the zlib library and include files are located.

ZLIBLIB=/usr/local/lib

ZLIBINC=/usr/local/include

# ZLIBLIB=../zlib

# ZLIBINC=../zlib

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

# for pgcc version 2.95.1, -O3 is buggy; don't use it.

CFLAGS=-W -Wall -D_REENTRANT -O2 \

	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5

LDFLAGS=-L. -lpng12

LDFLAGS_A=libpng.a -lz -lm

LIBADDFLAGS=-lz -lm

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:.o=.pic.o)

.SUFFIXES:      .c .o .pic.o

.c.pic.o:

	$(CC) -c $(CFLAGS) -fPIC -o $@ $*.c

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

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!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc

libpng.syms: png.h pngconf.h

	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\

	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG12_%s {global:\n",PNGMAJ)}\

	{ for (i=1;i+2<=NF;++i)\

		if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\

			print $$(i+1) ";";\

	for (i=1;i+1<=NF;++i)\

		if ($$(i)=="PNG_DATA_EXPORT")\

			print $$(i+1) ";";}\

	END{print "local: *; };"}' >$@.new

	$(RM_F) $@

	mv $@.new $@

libpng-config:

	( cat scripts/libpng-config-head.in; \

	echo prefix=\"$(prefix)\"; \

	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \

	echo L_opts=\"\"; \

	echo R_opts=\"\"; \

	echo libs=\"-lpng12\"; \

	echo all_libs=\"-lpng12 $(LIBADDFLAGS)\"; \

	cat scripts/libpng-config-body.in ) > libpng-config

	chmod +x libpng-config

$(LIBSO): $(LIBSOMAJ)

	$(LN_SF) $(LIBSOMAJ) $(LIBSO)

$(LIBSOMAJ): $(LIBSOVER)

	$(LN_SF) $(LIBSOVER) $(LIBSOMAJ)

$(LIBSOVER): $(OBJSDLL) libpng.syms

	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) \

	-Wl,-version-script,libpng.syms \

	-o $(LIBSOVER) \

	$(OBJSDLL)

$(OLDSOVER): $(OBJSDLL) libpng.syms

	$(CC) -shared -Wl,-soname,$(OLDSOMAJ) \

	-Wl,-version-script,libpng.syms \

	-o $(OLDSOVER) \

	$(OBJSDLL)

pngtest: pngtest.o $(LIBSO)

	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)

pngtest-static: pngtest.o libpng.a

	$(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)

test: pngtest pngtest-static

	@echo ""

	@echo "   Running pngtest dynamically linked with $(LIBSO):"

	@echo ""

	LD_LIBRARY_PATH=".:${LD_LIBRARY_PATH}" ./pngtest

	@echo ""

	@echo "   Running pngtest statically linked with libpng.a:"

	@echo ""

	./pngtest-static

install-headers: png.h pngconf.h

	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi

	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi

	cp png.h pngconf.h $(DI)/$(LIBNAME)

	chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h

	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.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 $(LIBSOVER) libpng.pc \

	$(OLDSOVER)

	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi

	-@$(RM_F) $(DL)/$(LIBSOVER)* $(DL)/$(LIBSO)

	-@$(RM_F) $(DL)/$(LIBSOMAJ)

	-@$(RM_F) $(DL)/$(OLDSO)

	-@$(RM_F) $(DL)/$(OLDSOMAJ)

	-@$(RM_F) $(DL)/$(OLDSOVER)*

	cp $(LIBSOVER) $(DL)

	cp $(OLDSOVER) $(DL)

	chmod 755 $(DL)/$(LIBSOVER)

	chmod 755 $(DL)/$(OLDSOVER)

	(cd $(DL); \

	$(LN_SF) $(OLDSOVER) $(OLDSOMAJ); \

	$(LN_SF) $(OLDSOMAJ) $(OLDSO); \

	$(LN_SF) $(LIBSOVER) $(LIBSOMAJ); \

	$(LN_SF) $(LIBSOMAJ) $(LIBSO))

	-@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) -I$(ZLIBINC) \

	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \

	   -L$(DL) -L$(ZLIBLIB) -Wl, -rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \

	   -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`

	./pngtestd pngtest.png

test-installed:

	$(CC) -I$(ZLIBINC) \

	   `$(BINPATH)/$(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 libpng.syms pngtest pngout.png libpng-config \

	$(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \

	$(OLDSOVER) \

	libpng.pc

DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO

writelock:

	chmod a-w *.[ch35] $(DOCS) scripts/*

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

png.o png.pic.o: png.h pngconf.h

pngerror.o pngerror.pic.o: png.h pngconf.h

pngrio.o pngrio.pic.o: png.h pngconf.h

pngwio.o pngwio.pic.o: png.h pngconf.h

pngmem.o pngmem.pic.o: png.h pngconf.h

pngset.o pngset.pic.o: png.h pngconf.h

pngget.o pngget.pic.o: png.h pngconf.h

pngread.o pngread.pic.o: png.h pngconf.h

pngrtran.o pngrtran.pic.o: png.h pngconf.h

pngrutil.o pngrutil.pic.o: png.h pngconf.h

pngtrans.o pngtrans.pic.o: png.h pngconf.h

pngwrite.o pngwrite.pic.o: png.h pngconf.h

pngwtran.o pngwtran.pic.o: png.h pngconf.h

pngwutil.o pngwutil.pic.o: png.h pngconf.h

pngpread.o pngpread.pic.o: png.h pngconf.h

pngtest.o: png.h pngconf.h