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# Copyright (C) 1995, 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
#
# This software is licensed to a single customer by Artifex Software Inc.
# under the terms of a specific OEM agreement.
# $RCSfile$ $Revision$
# makefile for PNG (Portable Network Graphics) code.
# Users of this makefile must define the following:
# ZSRCDIR - the zlib source directory
# ZGENDIR - the zlib generated intermediate file directory
# ZOBJDIR - the zlib object directory
# PNGSRCDIR - the source directory
# PNGGENDIR - the generated intermediate file directory
# PNGOBJDIR - the object directory
# PNGVERSION - the library version number ("89", "90", "95", "96",
# "10001", "10002", "10003", "10005").
# For historical reasons, "101" and "102" are also acceptable,
# even though they don't match libpng's numbering scheme
# (see png.h for more details).
# SHARE_LIBPNG - 0 to compile libpng, 1 to share
# LIBPNG_NAME - if SHARE_LIBPNG=1, the name of the shared library
# NOTE: currently users of this makefile define PSRCDIR and PVERSION,
# not PNGSRCDIR and PNGVERSION. This is a bug.
# This partial makefile compiles the png library for use in the Ghostscript
# PNG drivers. You can get the source code for this library from:
# ftp://swrinde.nde.swri.edu/pub/png/src/
# ftp://ftp.uu.net/graphics/png/src/
# Please see Ghostscript's `Make.htm' file for instructions about how to
# unpack these archives.
#
# When each version of Ghostscript is released, we copy the associated
# version of the png library to
# ftp://ftp.cs.wisc.edu/ghost/3rdparty/
# for more convenient access.
#
# The makefile is known to work with the following library versions:
# 0.89, 0.90, 0.95, 0.96, 1.0.1, 1.0.2, 1.0.3, 1.0.5.
# NOTE: the archive for libpng 0.95 may be inconsistent: if you have
# compilation problems, use an older version.
# Please see Ghostscript's Make.htm file for instructions about how to
# unpack these archives.
#
# The specification for the PNG file format is available from:
# http://www.group42.com/png.htm
# http://www.w3.org/pub/WWW/TR/WD-png
# (Rename directories.)
PNGSRCDIR=$(PSRCDIR)
PNGVERSION=$(PVERSION)
PNGSRC=$(PNGSRCDIR)$(D)
PNGGEN=$(PNGGENDIR)$(D)
PNGOBJ=$(PNGOBJDIR)$(D)
PNGO_=$(O_)$(PNGOBJ)
PZGEN=$(ZGENDIR)$(D)
# PI_ and PF_ are defined in gs.mak.
PNGCC=$(CC_) $(I_)$(PI_)$(_I) $(PF_)
# Define the name of this makefile.
LIBPNG_MAK=$(GLSRC)libpng.mak
png.clean : png.config-clean png.clean-not-config-clean
### WRONG. MUST DELETE OBJ AND GEN FILES SELECTIVELY.
png.clean-not-config-clean :
$(RM_) $(PNGOBJ)*.$(OBJ)
png.config-clean :
$(RM_) $(PNGGEN)lpg*.dev
PDEP=$(AK)
png_1=$(PNGOBJ)png.$(OBJ) $(PNGOBJ)pngmem.$(OBJ) $(PNGOBJ)pngerror.$(OBJ)
png_2=$(PNGOBJ)pngtrans.$(OBJ) $(PNGOBJ)pngwrite.$(OBJ) $(PNGOBJ)pngwtran.$(OBJ) $(PNGOBJ)pngwutil.$(OBJ)
# libpng modules
$(PNGOBJ)png.$(OBJ) : $(PNGSRC)png.c $(PDEP)
$(PNGCC) $(PNGO_)png.$(OBJ) $(C_) $(PNGSRC)png.c
$(PNGOBJ)pngwio.$(OBJ) : $(PNGSRC)pngwio.c $(PDEP)
$(PNGCC) $(PNGO_)pngwio.$(OBJ) $(C_) $(PNGSRC)pngwio.c
$(PNGOBJ)pngmem.$(OBJ) : $(PNGSRC)pngmem.c $(PDEP)
$(PNGCC) $(PNGO_)pngmem.$(OBJ) $(C_) $(PNGSRC)pngmem.c
$(PNGOBJ)pngerror.$(OBJ) : $(PNGSRC)pngerror.c $(PDEP)
$(PNGCC) $(PNGO_)pngerror.$(OBJ) $(C_) $(PNGSRC)pngerror.c
$(PNGOBJ)pngtrans.$(OBJ) : $(PNGSRC)pngtrans.c $(PDEP)
$(PNGCC) $(PNGO_)pngtrans.$(OBJ) $(C_) $(PNGSRC)pngtrans.c
$(PNGOBJ)pngwrite.$(OBJ) : $(PNGSRC)pngwrite.c $(PDEP)
$(PNGCC) $(PNGO_)pngwrite.$(OBJ) $(C_) $(PNGSRC)pngwrite.c
$(PNGOBJ)pngwtran.$(OBJ) : $(PNGSRC)pngwtran.c $(PDEP)
$(PNGCC) $(PNGO_)pngwtran.$(OBJ) $(C_) $(PNGSRC)pngwtran.c
$(PNGOBJ)pngwutil.$(OBJ) : $(PNGSRC)pngwutil.c $(PDEP)
$(PNGCC) $(PNGO_)pngwutil.$(OBJ) $(C_) $(PNGSRC)pngwutil.c
# Define the version of libpng.dev that we are actually using.
$(PNGGEN)libpng.dev : $(TOP_MAKEFILES) $(PNGGEN)libpng_$(SHARE_LIBPNG).dev
$(CP_) $(PNGGEN)libpng_$(SHARE_LIBPNG).dev $(PNGGEN)libpng.dev
# Define the shared version of libpng.
# Note that it requires libz, which must be searched *after* libpng.
$(PNGGEN)libpng_1.dev : $(TOP_MAKEFILES) $(LIBPNG_MAK) $(ECHOGS_XE) $(PZGEN)zlibe.dev
$(SETMOD) $(PNGGEN)libpng_1 -lib $(LIBPNG_NAME)
$(ADDMOD) $(PNGGEN)libpng_1 -include $(PZGEN)zlibe.dev
# Define the non-shared version of libpng.
$(PNGGEN)libpng_0.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(png_1) $(png_2)\
$(PZGEN)zlibe.dev $(PNGGEN)lpg$(PNGVERSION).dev
$(SETMOD) $(PNGGEN)libpng_0 $(png_1)
$(ADDMOD) $(PNGGEN)libpng_0 $(png_2)
$(ADDMOD) $(PNGGEN)libpng_0 -include $(PZGEN)zlibe.dev $(PNGGEN)lpg$(PNGVERSION).dev
$(PNGGEN)lpg89.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ)
$(SETMOD) $(PNGGEN)lpg89 $(PNGOBJ)pngwio.$(OBJ)
$(PNGGEN)lpg90.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg90 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg95.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg95 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg96.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg96 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg101.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg101 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg102.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg102 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg10001.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg10001 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg10002.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg10002 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg10003.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg10003 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
$(PNGGEN)lpg10005.dev : $(LIBPNG_MAK) $(ECHOGS_XE) $(PNGOBJ)pngwio.$(OBJ) $(PZGEN)crc32.dev
$(SETMOD) $(PNGGEN)lpg10005 $(PNGOBJ)pngwio.$(OBJ) -include $(PZGEN)crc32.dev
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