# makefile for libpng.a and libpng16.so on Linux ELF with gcc

# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2014 Greg Roelofs and

# Glenn Randers-Pehrson

# 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 = libpng16

PNGMAJ = 16

RELEASE = 21

# Shared library names:

LIBSO=$(LIBNAME).so

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

LIBSOREL=$(LIBSOMAJ).$(RELEASE)

OLDSO=libpng.so

# Utilities:

AR_RC=ar rc

CC=gcc

MKDIR_P=mkdir -p

LN_SF=ln -sf

RANLIB=ranlib

CP=cp

RM_F=/bin/rm -f

# where "make install" puts libpng16.a, libpng16.so*,

# libpng16/png.h, libpng16/pngconf.h, and libpng16/pnglibconf.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.

CPPFLAGS=-I$(ZLIBINC) # -DPNG_DEBUG=5

CFLAGS= -W -Wall -O3 -funroll-loops \

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

LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng16 -lz -lm

LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -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)

# Pre-built configuration

# See scripts/pnglibconf.mak for more options

PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt

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.o:

	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

.c.pic.o:

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

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

pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)

	$(CP) $(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!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc

libpng-config:

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

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

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

	echo L_opts=\"-L$(LIBPATH)\"; \

	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \

	echo libs=\"-lpng16 -lz -lm\"; \

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

	chmod +x libpng-config

$(LIBSO): $(LIBSOMAJ)

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

$(LIBSOMAJ): $(OBJSDLL)

	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOMAJ) $(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 ""

	./pngtest

	@echo ""

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

	@echo ""

	./pngtest-static

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) $(CPPFLAGS) \

	   `$(BINPATH)/$(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) $(CPPFLAGS) \

	   `$(BINPATH)/$(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)* pngtest-static pngtesti \

	libpng.pc pnglibconf.h

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 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