# Sample makefile for rpng-x / rpng2-x / wpng for SGI using cc 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.sgi

#

# 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 dynamically 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/libpng16

PNGLIB = -L/usr/local/lib -lpng16	  # dynamically linked against libpng

#PNGLIB = /usr/local/lib/libpng16.a # statically linked against libpng

# or:

#PNGINC = -I../..

#PNGLIB = -L../.. -lpng

#PNGLIB = ../../libpng.a

ZINC = -I/usr/local/include

ZLIB = -L/usr/local/lib -lz		# dynamically linked against zlib

#ZLIB = /usr/local/lib/libz.a		# statically linked against zlib

#ZINC = -I../zlib

#ZLIB = -L../zlib -lz

#ZLIB = ../../../zlib/libz.a

XINC = -I/usr/include/X11		# old-style, stock X distributions

XLIB = -L/usr/lib/X11 -lX11

#XINC = -I/usr/openwin/include    	# Sun workstations (OpenWindows)

#XLIB = -L/usr/openwin/lib -lX11

#XINC = -I/usr/X11R6/include		# new X distributions (XFree86, etc.)

#XLIB = -L/usr/X11R6/lib -lX11

INCS = $(PNGINC) $(ZINC) $(XINC)

RLIBS = $(PNGLIB) $(ZLIB) $(XLIB) -lm

WLIBS = $(PNGLIB) $(ZLIB)

CC = cc

LD = cc

RM = rm -f

# ABI must be the same as that used to build libpng.

ABI =

CPPFLAGS =

CFLAGS = $(ABI) -O -fullwarn $(INCS)

LDFLAGS = $(ABI)

O = .o

E =

RPNG  = rpng-x

RPNG2 = rpng2-x

WPNG  = wpng

ROBJS  = $(RPNG)$(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 $(CPPFLAGS) $(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.h

readpng$(O):	readpng.c readpng.h

readpng2$(O):	readpng2.c readpng2.h

writepng$(O):	writepng.c writepng.h

# maintenance ---------------------------------------------------------------

clean:

	$(RM) $(EXES) $(ROBJS) $(ROBJS2) $(WOBJS)