# Sample makefile for rpng-x / rpng2-x / wpng using gcc and make.# Greg Roelofs# Last modified:  7 March 2002##	The programs built by this makefile are described in the book,#	"PNG:  The Definitive Guide," by Greg Roelofs (O'Reilly and#	Associates, 1999).  Go buy a copy, eh?  Buy some for friends#	and family, too.  (Not that this is a blatant plug or anything.)## Invoke this makefile from a shell prompt in the usual way; for example:##	make -f Makefile.unx## This makefile assumes libpng and zlib have already been built or downloaded# and are both installed in /usr/local/{include,lib} (as indicated by the# PNG* and Z* macros below).  Edit as appropriate--choose only ONE each of# the PNGINC, PNGLIB, ZINC and ZLIB lines.## This makefile builds statically linked executables (against libpng and zlib,# that is), but that can be changed by uncommenting the appropriate PNGLIB and# ZLIB lines.# macros --------------------------------------------------------------------PNGINC = -I/usr/local/include/libpng12#PNGLIB = -L/usr/local/lib -lpng12 # dynamically linked against libpngPNGLIB = /usr/local/lib/libpng12.a # statically linked against libpng# or:#PNGINC = -I../libpng#PNGLIB = -L../libpng -lpng#PNGLIB = ../libpng/libpng.aZINC = -I/usr/local/include#ZLIB = -L/usr/local/lib -lz		# dynamically linked against zlibZLIB = /usr/local/lib/libz.a		# statically linked against zlib#ZINC = -I../zlib#ZLIB = -L../zlib -lz#ZLIB = ../zlib/libz.a#XINC = -I/usr/include			# old-style, stock X distributions#XLIB = -L/usr/lib/X11 -lX11#XINC = -I/usr/openwin/include		# Sun workstations (OpenWindows)#XLIB = -L/usr/openwin/lib -lX11XINC = -I/usr/X11R6/include		# new X distributions (XFree86, etc.)XLIB = -L/usr/X11R6/lib -lX11INCS = $(PNGINC) $(ZINC) $(XINC)RLIBS = $(PNGLIB) $(ZLIB) $(XLIB) -lmWLIBS = $(PNGLIB) $(ZLIB)CC = gccLD = gccRM = rm -fCFLAGS = -O -Wall $(INCS)# [note that -Wall is a gcc-specific compilation flag ("most warnings on")]# [-ansi, -pedantic and -W can also be used]LDFLAGS =O = .oE =RPNG  = rpng-xRPNG2 = rpng2-xWPNG  = wpngROBJS  = $(RPNG)$(O) readpng$(O)ROBJS2 = $(RPNG2)$(O) readpng2$(O)WOBJS  = $(WPNG)$(O) writepng$(O)EXES = $(RPNG)$(E) $(RPNG2)$(E) $(WPNG)$(E)# implicit make rules -------------------------------------------------------.c$(O):	$(CC) -c $(CFLAGS) $<# dependencies --------------------------------------------------------------all:  $(EXES)$(RPNG)$(E): $(ROBJS)	$(LD) $(LDFLAGS) -o $@ $(ROBJS) $(RLIBS)$(RPNG2)$(E): $(ROBJS2)	$(LD) $(LDFLAGS) -o $@ $(ROBJS2) $(RLIBS)$(WPNG)$(E): $(WOBJS)	$(LD) $(LDFLAGS) -o $@ $(WOBJS) $(WLIBS)$(RPNG)$(O):	$(RPNG).c readpng.h$(RPNG2)$(O):	$(RPNG2).c readpng2.h$(WPNG)$(O):	$(WPNG).c writepng.hreadpng$(O):	readpng.c readpng.hreadpng2$(O):	readpng2.c readpng2.hwritepng$(O):	writepng.c writepng.h# maintenance ---------------------------------------------------------------clean:	$(RM) $(EXES) $(ROBJS) $(ROBJS2) $(WOBJS)