1# Makefile for PngMinus (rpng2)
  2# Linux / Unix
  3
  4#CC=cc
  5CC=gcc
  6LD=$(CC)
  7
  8# If awk fails try
  9# make AWK=nawk
 10
 11# If cpp fails try
 12# make CPP=/lib/cpp
 13
 14RM=rm -f
 15COPY=cp
 16
 17#XINC = -I/usr/include			# old-style, stock X distributions
 18#XLIB = -L/usr/lib/X11 -lX11		#  (including SGI IRIX)
 19
 20#XINC = -I/usr/openwin/include		# Sun workstations (OpenWindows)
 21#XLIB = -L/usr/openwin/lib -lX11
 22
 23XINC = -I/usr/X11R6/include		# new X distributions (X.org, etc.)
 24XLIB = -L/usr/X11R6/lib -lX11
 25#XLIB = -L/usr/X11R6/lib64 -lX11	# e.g., Red Hat on AMD64
 26
 27#XINC = -I/usr/local/include   		# FreeBSD
 28#XLIB = -L/usr/local/lib -lX11
 29
 30#LIBS = $(XLIB)
 31LIBS = $(XLIB) -lm                      #platforms that need libm
 32
 33CPPFLAGS=-I. $(XINC) -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP
 34CFLAGS=-O1 -Wall
 35
 36C=.c
 37O=.o
 38L=.a
 39E=
 40
 41# Where to find the source code:
 42PNGSRC =../../..
 43ZLIBSRC=$(PNGSRC)/../zlib
 44PROGSRC=$(PNGSRC)/contrib/gregbook
 45
 46# Zlib (minimal inflate requirements - crc32 is used by libpng)
 47# zutil can be eliminated if you provide your own zcalloc and zcfree
 48ZSRCS  = adler32$(C) crc32$(C) \
 49	 inffast$(C) inflate$(C) inftrees$(C) \
 50	 zutil$(C)
 51
 52# Standard headers
 53ZH     = zlib.h crc32.h inffast.h inffixed.h \
 54	 inflate.h inftrees.h zutil.h
 55
 56# Machine generated headers
 57ZCONF  = zconf.h
 58
 59# Headers callers use
 60ZINC   = zlib.h $(ZCONF)
 61
 62# Headers the Zlib source uses
 63ZHDRS  = $(ZH) $(ZCONF)
 64
 65ZOBJS  = adler32$(O) crc32$(O) \
 66	 inffast$(O) inflate$(O) inftrees$(O) \
 67	 zutil$(O)
 68
 69# libpng
 70PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
 71	pngpread$(C) pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
 72	pngset$(C) pngtrans$(C)
 73
 74# Standard headers
 75PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
 76
 77# Machine generated headers
 78PNGCONF=pnglibconf.h
 79
 80# Headers callers use
 81PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
 82
 83# Headers the PNG library uses
 84PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
 85
 86PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
 87	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
 88	pngset$(O) pngtrans$(O)
 89
 90PROGSRCS= rpng2-x$(C) readpng2$(C)
 91PROGHDRS= readpng2.h
 92PROGDOCS= COPYING LICENSE
 93PROGOBJS= rpng2-x$(O) readpng2$(O)
 94
 95OBJS    = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
 96
 97# implicit make rules -------------------------------------------------------
 98
 99.c$(O):
100	$(CC) -c $(CPPFLAGS) $(CFLAGS) $<
101
102# dependencies
103
104all: $(PROGDOCS) rpng2-x$(E)
105
106rpng2-x$(E): $(OBJS)
107	$(LD) -o rpng2-x$(E) $(OBJS) $(LIBS)
108
109# The DFA_XTRA setting turns all libpng options off then
110# turns on those required for this minimal build.
111# The CPP_FLAGS setting causes pngusr.h to be included in
112# both the build of pnglibconf.h and, subsequently, when
113# building libpng itself.
114$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak $(ZH)\
115	$(PNGSRC)/scripts/pnglibconf.dfa \
116	$(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
117	$(RM) pnglibconf.h pnglibconf.dfn
118	$(MAKE) -f $(PNGSRC)/scripts/pnglibconf.mak $(MAKEFLAGS)\
119	    srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG -I."\
120	    DFA_XTRA="pngusr.dfa" $@
121
122clean:
123	$(MAKE) -f $(PNGSRC)/scripts/pnglibconf.mak $(MAKEFLAGS)\
124	    srcdir=$(PNGSRC) clean
125	$(RM) rpng2-x$(O)
126	$(RM) rpng2-x$(E)
127	$(RM) $(OBJS)
128
129# distclean also removes the copied source and headers
130distclean: clean
131	$(RM) -r scripts # historical reasons
132	$(RM) $(PNGSRCS) $(PNGH)
133	$(RM) $(ZSRCS) $(ZH) $(ZCONF)
134	$(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
135
136# Header file dependencies:
137$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
138$(PNGOBJS): $(PNGHDRS) $(ZINC)
139$(ZOBJS): $(ZHDRS)
140
141# Gather the source code from the respective directories
142$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
143	$(RM) $@
144	$(COPY) $(PNGSRC)/$@ $@
145
146# No dependency on the ZLIBSRC target so that it only needs
147# to be specified once.
148$(ZSRCS) $(ZH):
149	$(RM) $@
150	$(COPY) $(ZLIBSRC)/$@ $@
151
152# The unconfigured zconf.h varies in name according to the
153# zlib release
154$(ZCONF):
155	$(RM) $@
156	@for f in zconf.h.in zconf.in.h zconf.h; do\
157	    test -r $(ZLIBSRC)/$$f &&\
158	    echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
159	    $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
160	done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
161
162$(PROGSRCS) $(PROGHDRS) $(PROGDOCS): $(PROGSRC)/$@
163	$(RM) $@
164	$(COPY) $(PROGSRC)/$@ $@
165
166# End of makefile for rpng2-x