[libpng15] Imported from libpng-1.5.7rc02.tarv1.5.7rc02

21 files changed, 1057 insertions, 1055 deletions

diff --git a/ANNOUNCE b/ANNOUNCE
index 0bc6bee20..813e0010d 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.7rc02 - December 2, 2011
+Libpng 1.5.7rc02 - December 5, 2011
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -117,11 +117,12 @@ Version 1.5.7rc01 [December 1, 2011]
   Replaced an "#if" with "#ifdef" in pngrtran.c
   Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
 
-Version 1.5.7rc02 [December 2, 2011]
+Version 1.5.7rc02 [December 5, 2011]
   Revised project files and contrib/pngvalid/pngvalid.c to account for
     the relocation of pngvalid into contrib/libtests.
   Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
     as in libpng-1.5.4.
+  Put CRLF line endings in the owatcom project files.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 799ab2ce3..cc141e366 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3762,11 +3762,12 @@ Version 1.5.7rc01 [December 1, 2011]
   Replaced an "#if" with "#ifdef" in pngrtran.c
   Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
 
-Version 1.5.7rc02 [December 2, 2011]
+Version 1.5.7rc02 [December 5, 2011]
   Revised project files and contrib/pngvalid/pngvalid.c to account for
     the relocation of pngvalid into contrib/libtests.
   Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
     as in libpng-1.5.4.
+  Put CRLF line endings in the owatcom project files.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/LICENSE b/LICENSE
index 2eda6e98c..62b6af81c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 2, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 5, 2011, are
 Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 2, 2011
+December 5, 2011
diff --git a/README b/README
index c1ba844f2..f0a4d85d8 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.7rc02 - December 2, 2011 (shared library 15.0)
+README for libpng version 1.5.7rc02 - December 5, 2011 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/libpng-manual.txt b/libpng-manual.txt
index f75a7598c..63fba96d7 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.7rc02 - December 2, 2011
+ libpng version 1.5.7rc02 - December 5, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.7rc02 - December 2, 2011
+ libpng versions 0.97, January 1998, through 1.5.7rc02 - December 5, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4573,7 +4573,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIV. Y2K Compliance in libpng
 
-December 2, 2011
+December 5, 2011
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index e999b85f2..2cd0e1b2d 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "December 2, 2011"
+.TH LIBPNG 3 "December 5, 2011"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7rc02
 .SH SYNOPSIS
@@ -977,7 +977,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.7rc02 - December 2, 2011
+ libpng version 1.5.7rc02 - December 5, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -988,7 +988,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.7rc02 - December 2, 2011
+ libpng versions 0.97, January 1998, through 1.5.7rc02 - December 5, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5551,7 +5551,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XIV. Y2K Compliance in libpng
 
-December 2, 2011
+December 5, 2011
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5817,7 +5817,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.7rc02 - December 2, 2011:
+Libpng version 1.5.7rc02 - December 5, 2011:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5840,7 +5840,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 2, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 5, 2011, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -5939,7 +5939,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 2, 2011
+December 5, 2011
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 0844e430f..67dc7033c 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "December 2, 2011"
+.TH LIBPNGPF 3 "December 5, 2011"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.7rc02
 (private functions)
diff --git a/png.5 b/png.5
index bb0c857fa..61685ba30 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "December 2, 2011"
+.TH PNG 5 "December 5, 2011"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 1e0e65813..58235109e 100644
--- a/png.c
+++ b/png.c
@@ -655,13 +655,13 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.7rc02 - December 2, 2011" PNG_STRING_NEWLINE \
+     "libpng version 1.5.7rc02 - December 5, 2011" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.7rc02 - December 2, 2011\
+      return "libpng version 1.5.7rc02 - December 5, 2011\
       Copyright (c) 1998-2011 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/png.h b/png.h
index 9d29e00c7..9d24162e7 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.7rc02 - December 2, 2011
+ * libpng version 1.5.7rc02 - December 5, 2011
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,7 +11,7 @@
  * Authors and maintainers:
  *   libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *   libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.5.7rc02 - December 2, 2011: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.7rc02 - December 5, 2011: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -196,7 +196,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 2, 2011, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.7rc02, December 5, 2011, are
  * Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -308,7 +308,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    December 2, 2011
+ *    December 5, 2011
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -374,7 +374,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.5.7rc02"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.7rc02 - December 2, 2011\n"
+     " libpng version 1.5.7rc02 - December 5, 2011\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
diff --git a/pngconf.h b/pngconf.h
index af4e43fe6..9b49de4ea 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.7rc02 - December 2, 2011
+ * libpng version 1.5.7rc02 - December 5, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngset.c b/pngset.c
index af5511b36..48290baa9 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.5.6 [November 3, 2011]
+ * Last changed in libpng 1.5.7 [(PENDING RELEASE)]
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
diff --git a/projects/owatcom/libpng.tgt b/projects/owatcom/libpng.tgt
index 096b2eef1..4a9622e68 100644
--- a/projects/owatcom/libpng.tgt
+++ b/projects/owatcom/libpng.tgt
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diff --git a/projects/owatcom/libpng.wpj b/projects/owatcom/libpng.wpj
index aaea64a8d..cddf9f1f1 100644
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+++ b/projects/owatcom/libpng.wpj
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-#
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-@if exist config.inf type config.inf
-@echo Checking for the libpng configuration file pnglibconf.h
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+# Locations of zlib and (if required) awk (change as required:)

+set zlib=..\..\..\zlib

+set awk=

+#

+@if not exist pngconfig.dfa $(MAKE) $(__MAKEOPTS__) -f pngconfig.mak defaults

+@if exist config.inf type config.inf

+@echo Checking for the libpng configuration file pnglibconf.h

+$(MAKE) $(__MAKEOPTS__) -f pngconfig.mak

+4

+MCommand

+19

+@type pngconfig.inf

+3

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diff --git a/projects/owatcom/pngconfig.mak b/projects/owatcom/pngconfig.mak
index 0f9887805..054a3fc20 100644
--- a/projects/owatcom/pngconfig.mak
+++ b/projects/owatcom/pngconfig.mak
@@ -1,160 +1,160 @@
-# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
-# configuration header.  You can ignore this file if you don't need to
-# configure libpng; a default configuration will be built.
-#
-# For more information build libpng.wpj under the IDE and then read the
-# generated files:
-#
-#    config.inf: Basic configuration information for a standard build.
-#    pngconfig.dfa: Advanced configuration for non-standard libpng builds.
-#
-DELETE=rm -f
-ECHO=echo
-COPY=copy
-#
-# If your configuration needs to test compiler flags when building
-# pnglibconf.h you may need to override the following on the wmake command
-# line:
-CFLAGS=
-CC=wcl386
-CPP=$(CC) -pw0
-#
-# Read awk from the environment if set, else it can be set on the command
-# line (the default approach is to set the %awk% environment variable in the
-# IDE libpng.wpj 'before' rule - this setting is local.)
-!ifdef %awk
-AWK=$(%awk)
-!endif
-#
-# pnglibconf.h must exist in the source directory, this is the final rule
-# which copies the local built version (and this is the default target for
-# this makefile.)
-..\..\pnglibconf.h: pnglibconf.h
- $(COPY) pnglibconf.h $@
-
-!ifdef AWK
-# CPPFLAGS should contain the options to control the result,
-# but DEFS and CFLAGS are also supported here, override
-# as appropriate
-DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
-
-pnglibconf.h: pnglibconf.dfn
- $(DELETE) $@ dfn.c dfn1.out dfn2.out
- $(ECHO) $#include "pnglibconf.dfn" >dfn.c
- $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
- $(AWK) -f << dfn1.out >dfn2.out
-/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{
- sub(/^.*PNG_DEFN_MAGIC-/, "")
- sub(/ *-PNG_DEFN_END.*$$/, "")
- gsub(/ *@@@ */, "")
- print
-}
-<<
- $(COPY) dfn2.out $@
- @type << >pngconfig.inf
-This is a locally configurable build of libpng.lib; for configuration
-instructions consult and edit projects/openwatcom/pngconfig.dfa
-<<
- $(DELETE) dfn.c dfn1.out dfn2.out
-
-pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h
- $(DELETE) $@ dfn1.out dfn2.out
- $(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
- $(COPY) dfn2.out $@
- $(DELETE) dfn1.out dfn2.out
-
-!else
-# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
-# the required change to the calling convention.
-#
-# By default libpng is built to use the __cdecl calling convention on
-# Windows.  This gives compatibility with MSVC and GCC.  Unfortunately it
-# does not work with OpenWatcom because OpenWatcom implements longjmp using
-# the __watcall convention (compared with both MSVC and GCC which use __cdecl
-# for library functions.)
-#
-# Thus the default must be changed to build on OpenWatcom and, once changed,
-# the result will not be compatible with applications built using other
-# compilers (in fact attempts to build will fail at compile time.)
-#
-pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
- @$(ECHO) .
- @$(ECHO) .
- @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
- @$(ECHO) .
- @$(ECHO) .
- vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
- @$(ECHO) .
- @$(ECHO) .
- @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
- @$(ECHO) .
- @$(ECHO) .
- @type << >pngconfig.inf
-This is the default configuration of libpng.lib, if you wish to
-change the configuration please consult the instructions in
-projects/owatcom/pngconfig.dfa.
-<<
-
-!endif
-
-# Make the default files
-defaults: .symbolic
- @$(COPY) << config.inf
-$# The libpng project is incompletely configured.  To complete configuration
-$# please complete the following steps:
-$#
-$#   1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
-$#      locations of the zlib include file zlib.h and the built zlib library,
-$#      zlib.lib.
-$#
-$#   2) If you want to change libpng to a non-standard configuration also
-$#      change the definition of 'awk' in the before rule to the name of your
-$#      awk command.  For more instructions on configuration read
-$#      pngconfig.dfa.
-$#
-$#   3) Delete this file (config.inf).
-<<
- @$(COPY) << pngconfig.dfa
-$# pngconfig.dfa: this file contains configuration options for libpng.
-$# If emtpy the standard configuration will be built.  For this file to be
-$# used a working version of the program 'awk' is required and the program
-$# must be identified in the 'before' rule of the project.
-$#
-$# If you don't already have 'awk', or the version of awk you have seems not
-$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
-$# awk.)  You can find source code and a built executable (called awk95.exe)
-$# here:
-$#
-$#     http://www.cs.princeton.edu/~bwk/btl.mirror/
-$#
-$# The executable works just fine.
-$#
-$# If build issues errors after a change to pngconfig.dfa you have entered
-$# inconsistent feature requests, or even malformed requests, in
-$# pngconfig.dfa.  The error messages from awk should be comprehensible, but
-$# if not simply go back to the start (nothing but comments in this file) and
-$# enter configuration lines one by one until one produces an error.  (Or, of
-$# course, do the standard binary chop.)
-$#
-$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
-$# must do Actions/Mark All Targets for Remake.  This is because the compiler
-$# generated dependency information (as of OpenWatcom 1.9) does not record the
-$# dependency on pnglibconf.h correctly.
-$#
-$# If awk isn't set then this file is bypassed.  If you just want the standard
-$# configuration it is automatically produced from the distributed version
-$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
-$# of the OpenWatcom library calling convention.)
-$#
-<<
-
-clean:: .symbolic
- $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
- $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk
- $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
- $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
- $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1
-
-distclean:: clean .symbolic
- $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa
+# This is an OpenWatcom make file which builds pnglibconf.h - the libpng

+# configuration header.  You can ignore this file if you don't need to

+# configure libpng; a default configuration will be built.

+#

+# For more information build libpng.wpj under the IDE and then read the

+# generated files:

+#

+#    config.inf: Basic configuration information for a standard build.

+#    pngconfig.dfa: Advanced configuration for non-standard libpng builds.

+#

+DELETE=rm -f

+ECHO=echo

+COPY=copy

+#

+# If your configuration needs to test compiler flags when building

+# pnglibconf.h you may need to override the following on the wmake command

+# line:

+CFLAGS=

+CC=wcl386

+CPP=$(CC) -pw0

+#

+# Read awk from the environment if set, else it can be set on the command

+# line (the default approach is to set the %awk% environment variable in the

+# IDE libpng.wpj 'before' rule - this setting is local.)

+!ifdef %awk

+AWK=$(%awk)

+!endif

+#

+# pnglibconf.h must exist in the source directory, this is the final rule

+# which copies the local built version (and this is the default target for

+# this makefile.)

+..\..\pnglibconf.h: pnglibconf.h

+ $(COPY) pnglibconf.h $@

+

+!ifdef AWK

+# CPPFLAGS should contain the options to control the result,

+# but DEFS and CFLAGS are also supported here, override

+# as appropriate

+DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)

+

+pnglibconf.h: pnglibconf.dfn

+ $(DELETE) $@ dfn.c dfn1.out dfn2.out

+ $(ECHO) $#include "pnglibconf.dfn" >dfn.c

+ $(CPP) $(DFNFLAGS) dfn.c >dfn1.out

+ $(AWK) -f << dfn1.out >dfn2.out

+/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{

+ sub(/^.*PNG_DEFN_MAGIC-/, "")

+ sub(/ *-PNG_DEFN_END.*$$/, "")

+ gsub(/ *@@@ */, "")

+ print

+}

+<<

+ $(COPY) dfn2.out $@

+ @type << >pngconfig.inf

+This is a locally configurable build of libpng.lib; for configuration

+instructions consult and edit projects/openwatcom/pngconfig.dfa

+<<

+ $(DELETE) dfn.c dfn1.out dfn2.out

+

+pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h

+ $(DELETE) $@ dfn1.out dfn2.out

+ $(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2

+ $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2

+ $(COPY) dfn2.out $@

+ $(DELETE) dfn1.out dfn2.out

+

+!else

+# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make

+# the required change to the calling convention.

+#

+# By default libpng is built to use the __cdecl calling convention on

+# Windows.  This gives compatibility with MSVC and GCC.  Unfortunately it

+# does not work with OpenWatcom because OpenWatcom implements longjmp using

+# the __watcall convention (compared with both MSVC and GCC which use __cdecl

+# for library functions.)

+#

+# Thus the default must be changed to build on OpenWatcom and, once changed,

+# the result will not be compatible with applications built using other

+# compilers (in fact attempts to build will fail at compile time.)

+#

+pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly

+ @$(ECHO) .

+ @$(ECHO) .

+ @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt

+ @$(ECHO) .

+ @$(ECHO) .

+ vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt

+ @$(ECHO) .

+ @$(ECHO) .

+ @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!

+ @$(ECHO) .

+ @$(ECHO) .

+ @type << >pngconfig.inf

+This is the default configuration of libpng.lib, if you wish to

+change the configuration please consult the instructions in

+projects/owatcom/pngconfig.dfa.

+<<

+

+!endif

+

+# Make the default files

+defaults: .symbolic

+ @$(COPY) << config.inf

+$# The libpng project is incompletely configured.  To complete configuration

+$# please complete the following steps:

+$#

+$#   1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the

+$#      locations of the zlib include file zlib.h and the built zlib library,

+$#      zlib.lib.

+$#

+$#   2) If you want to change libpng to a non-standard configuration also

+$#      change the definition of 'awk' in the before rule to the name of your

+$#      awk command.  For more instructions on configuration read

+$#      pngconfig.dfa.

+$#

+$#   3) Delete this file (config.inf).

+<<

+ @$(COPY) << pngconfig.dfa

+$# pngconfig.dfa: this file contains configuration options for libpng.

+$# If emtpy the standard configuration will be built.  For this file to be

+$# used a working version of the program 'awk' is required and the program

+$# must be identified in the 'before' rule of the project.

+$#

+$# If you don't already have 'awk', or the version of awk you have seems not

+$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of

+$# awk.)  You can find source code and a built executable (called awk95.exe)

+$# here:

+$#

+$#     http://www.cs.princeton.edu/~bwk/btl.mirror/

+$#

+$# The executable works just fine.

+$#

+$# If build issues errors after a change to pngconfig.dfa you have entered

+$# inconsistent feature requests, or even malformed requests, in

+$# pngconfig.dfa.  The error messages from awk should be comprehensible, but

+$# if not simply go back to the start (nothing but comments in this file) and

+$# enter configuration lines one by one until one produces an error.  (Or, of

+$# course, do the standard binary chop.)

+$#

+$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you

+$# must do Actions/Mark All Targets for Remake.  This is because the compiler

+$# generated dependency information (as of OpenWatcom 1.9) does not record the

+$# dependency on pnglibconf.h correctly.

+$#

+$# If awk isn't set then this file is bypassed.  If you just want the standard

+$# configuration it is automatically produced from the distributed version

+$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use

+$# of the OpenWatcom library calling convention.)

+$#

+<<

+

+clean:: .symbolic

+ $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf

+ $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk

+ $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1

+ $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1

+ $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1

+

+distclean:: clean .symbolic

+ $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa

diff --git a/projects/owatcom/pngtest.tgt b/projects/owatcom/pngtest.tgt
index ca3db8c3a..211f1a748 100644
--- a/projects/owatcom/pngtest.tgt
+++ b/projects/owatcom/pngtest.tgt
@@ -1,179 +1,179 @@
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-cd ..\..
-projects\owatcom\pngtest
-6
-MItem
-11
-pngtest.exe
-7
-WString
-4
-NEXE
-8
-WVList
-4
-9
-MVState
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-?????Library directories(;):
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-WString
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-14
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-WINLINK
-15
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diff --git a/projects/owatcom/pngvalid.tgt b/projects/owatcom/pngvalid.tgt
index 1cc79085e..1e78e75cb 100644
--- a/projects/owatcom/pngvalid.tgt
+++ b/projects/owatcom/pngvalid.tgt
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+nc2en

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+MCommand

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+MCommand

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+pngvalid

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+MItem

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+pngvalid.exe

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+WString

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+WVList

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+9

+MVState

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+WString

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+WINLINK

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+WString

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+?????Stack:

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+WString

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+768k

+0

+13

+MVState

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+WString

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+WINLINK

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+WString

+28

+?????Library directories(;):

+1

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+WString

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+$(%zlib)

+0

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+MVState

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+WString

+7

+WINLINK

+19

+WString

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+?????Libraries(,):

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+20

+WString

+19

+libpng.lib zlib.lib

+0

+21

+MVState

+22

+WString

+7

+WINLINK

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+0

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+MVState

+26

+WString

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+WINLINK

+27

+WString

+28

+?????Library directories(;):

+0

+28

+WString

+8

+$(%zlib)

+0

+29

+MVState

+30

+WString

+7

+WINLINK

+31

+WString

+18

+?????Libraries(,):

+0

+32

+WString

+19

+libpng.lib zlib.lib

+0

+33

+WVList

+0

+-1

+1

+1

+0

+34

+WPickList

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+35

+MItem

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+36

+WString

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+COBJ

+37

+WVList

+2

+38

+MVState

+39

+WString

+3

+WCC

+40

+WString

+25

+n????Include directories:

+1

+41

+WString

+39

+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"

+0

+42

+MVState

+43

+WString

+3

+WCC

+44

+WString

+25

+n????Include directories:

+0

+45

+WString

+39

+"$(%zlib);$(%watcom)/h;$(%watcom)/h/nt"

+0

+46

+WVList

+0

+-1

+1

+1

+0

+47

+MItem

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+..\..\contrib\libtests\pngvalid.c

+48

+WString

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diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index dfbef163b..ae42f10ad 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.7rc02 - December 2, 2011
+libpng version 1.5.7rc02 - December 5, 2011
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 709ae2878..d16ec893f 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.7rc02 - December 2, 2011
+ * libpng version 1.5.7rc02 - December 5, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index 284cc1da0..5aa6ccfb7 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.5.7rc02 - December 2, 2011
+Makefiles for  libpng version 1.5.7rc02 - December 5, 2011
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index ee650ea68..9011ffe84 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -3,7 +3,7 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng 1.5.7rc02 - December 2, 2011 */
+/* Libpng 1.5.7rc02 - December 5, 2011 */
 
 /* Copyright (c) 1998-2011 Glenn Randers-Pehrson */