makefile.knr

png文件的解码和文件格式说明

# makefile for libpng
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
# For conditions of distribution and use, see copyright notice in png.h

# This makefile requires the file ansi2knr.c, which you can get
# from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
# If you have libjpeg, you probably already have ansi2knr.c in the jpeg
# source distribution.

# where make install puts libpng.a and png.h
prefix=/usr/local

CC=cc
CFLAGS=-I../zlib -O
LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
# flags for ansi2knr
ANSI2KNRFLAGS=

RANLIB=ranlib
#RANLIB=echo

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: ansi2knr libpng.a pngtest

# general rule to allow ansi2knr to work
.c.o:
	./ansi2knr $*.c T$*.c
	$(CC) $(CFLAGS) -c T$*.c
	rm -f T$*.c $*.o
	mv T$*.o $*.o

ansi2knr: ansi2knr.c
	$(CC) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr ansi2knr.c

libpng.a: ansi2knr $(OBJS)
	ar rc $@  $(OBJS)
	$(RANLIB) $@

pngtest: pngtest.o libpng.a
	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)

test: pngtest
	./pngtest

install: libpng.a
	-@mkdir $(prefix)/include
	-@mkdir $(prefix)/lib
	cp png.h $(prefix)/include
	cp pngconf.h $(prefix)/include
	chmod 644 $(prefix)/include/png.h
	chmod 644 $(prefix)/include/pngconf.h
	cp libpng.a $(prefix)/lib
	chmod 644 $(prefix)/lib/libpng.a

clean:
	rm -f *.o libpng.a pngtest pngout.png ansi2knr

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.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
pngpread.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