diff --git a/scripts/README.txt b/scripts/README.txt
index e7bb6f7..3d911ef 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -7,16 +7,12 @@
  makefile.linux-opt=>  Linux/ELF makefile with hardware optimizations on
                        (gcc, creates shared libpng16.so.16.1.6.*)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
- makefile.knr      =>  Archaic UNIX Makefile that converts files with
-                       ansi2knr (Requires ansi2knr.c from
-                       ftp://ftp.cs.wisc.edu/ghost)
  makefile.acorn    =>  Acorn makefile
  makefile.aix      =>  AIX/gcc makefile
  makefile.amiga    =>  Amiga makefile
  makefile.atari    =>  Atari makefile
  makefile.bc32     =>  32-bit Borland C++ (all modules compiled in C mode)
  makefile.beos     =>  BeOS makefile
- makefile.bor      =>  Borland makefile (uses bcc)
  makefile.cegcc    =>  minge32ce for Windows CE makefile
  makefile.darwin   =>  Darwin makefile, for macOS (formerly Mac OS X)
  makefile.dec      =>  DEC Alpha UNIX makefile
@@ -29,10 +25,8 @@
  makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
  makefile.intel    =>  Intel C/C++ version 4.0 and later
  makefile.mips     =>  MIPS makefile
- makefile.msc      =>  Microsoft C makefile
  makefile.netbsd   =>  NetBSD/cc makefile, makes shared libpng.so
  makefile.openbsd  =>  OpenBSD makefile
- makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  SCO OSr5 ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics makefile
                        (gcc, creates shared libpng16.so.16.1.6.*)
@@ -45,7 +39,6 @@
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
- makefile.tc3      =>  Turbo C 3.0 makefile
  makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later
  makevms.com       =>  VMS build script
  smakefile.ppc     =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
diff --git a/scripts/def.c b/scripts/def.c
deleted file mode 100644
index 0e4fe74..0000000
--- a/scripts/def.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* def.c - define format of libpng.def
- *
- * Last changed in libpng version 1.6.16 [December 22, 2014]
- * Copyright (c) 2011-2014 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* Write the export file header: */
-PNG_DFN ";--------------------------------------------------------------"
-PNG_DFN "; LIBPNG module definition file for OS/2"
-PNG_DFN ";--------------------------------------------------------------"
-PNG_DFN ""
-PNG_DFN "; If you give the library an explicit name one or other files"
-PNG_DFN "; may need modifying to support the new name on one or more"
-PNG_DFN "; systems."
-PNG_DFN "LIBRARY"
-PNG_DFN "OS2 DESCRIPTION "PNG image compression library""
-PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
-PNG_DFN ""
-PNG_DFN "EXPORTS"
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
-        PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"
-
-#include "../png.h"
diff --git a/scripts/makefile.bor b/scripts/makefile.bor
deleted file mode 100644
index 6693772..0000000
--- a/scripts/makefile.bor
+++ /dev/null
@@ -1,170 +0,0 @@
-# Makefile for libpng
-# 16-bit Borland C++ (Note: All modules are compiled in C mode)
-# To build the library, do:
-#       "make -fmakefile.bor -DMODEL=c"
-# or:   "make -fmakefile.bor -DMODEL=l"
-#
-# ------------ Borland C++ ------------
-
-### Absolutely necessary for this makefile to work
-.AUTODEPEND
-
-## Where zlib.h, zconf.h and zlib_MODEL.lib are
-ZLIB_DIR=..\zlib
-
-## Compiler, linker, librarian and other tools
-CC=bcc
-LD=bcc
-LIB=tlib
-CP=copy
-
-!ifndef MODEL
-MODEL=l
-!endif
-
-MODEL_ARG=-m$(MODEL)
-
-#TARGET_CPU=3
-# 2 = 286, 3 = 386, etc.
-!ifndef TARGET_CPU
-TARGET_CPU=2
-!endif
-
-# Use this if you don't want Borland's fancy exception handling
-# (for Borland C++ 4.0 or later)
-#NOEHLIB=noeh$(MODEL).lib
-
-!ifdef DEBUG
-CDEBUG=-v
-LDEBUG=-v
-!else
-CDEBUG=
-LDEBUG=
-!endif
-
-# STACKOFLOW=1
-!ifdef STACKOFLOW
-CDEBUG=$(CDEBUG) -N
-LDEBUG=$(LDEBUG) -N
-!endif
-
-# -X- turn on dependency generation in the object file
-# -w  set all warnings on
-# -O2 optimize for speed
-# -Z  global optimization
-CPPFLAGS=-I$(ZLIB_DIR)
-CFLAGS=-O2 -Z -X- -w -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
-
-# -M  generate map file
-LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
-
-# Pre-built configuration
-# See scripts\pnglibconf.mak for more options
-!ifndef PNGLIBCONF_H_PREBUILT
-PNGLIBCONF_H_PREBUILT = scripts\pnglibconf.h.prebuilt
-!endif
-
-## Variables
-
-OBJS = \
-	png.obj \
-	pngerror.obj \
-	pngget.obj \
-	pngmem.obj \
-	pngpread.obj \
-	pngread.obj \
-	pngrio.obj \
-	pngrtran.obj \
-	pngrutil.obj \
-	pngset.obj \
-	pngtrans.obj \
-	pngwio.obj \
-	pngwrite.obj \
-	pngwtran.obj \
-	pngwutil.obj
-
-LIBOBJS = \
-	+png.obj \
-	+pngerror.obj \
-	+pngget.obj \
-	+pngmem.obj \
-	+pngpread.obj \
-	+pngread.obj \
-	+pngrio.obj \
-	+pngrtran.obj \
-	+pngrutil.obj \
-	+pngset.obj \
-	+pngtrans.obj \
-	+pngwio.obj \
-	+pngwrite.obj \
-	+pngwtran.obj \
-	+pngwutil.obj
-
-LIBNAME=libpng$(MODEL).lib
-
-## Implicit rules
-
-# Braces let make "batch" calls to the compiler,
-# 2 calls instead of 12; space is important.
-.c.obj:
-	$(CC) $(CPPFLAGS) $(CFLAGS) -c {$*.c }
-
-.c.exe:
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $*.c \
-	  $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
-## Major targets
-
-all: libpng pngtest
-
-# try !include scripts\pnglibconf.mak for more options
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
-
-libpng: $(LIBNAME)
-
-pngtest: pngtest$(MODEL).exe
-
-test: pngtest$(MODEL).exe
-	pngtest$(MODEL)
-
-## Minor Targets
-
-png.obj: png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.obj: pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.obj: pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.obj: pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.obj: pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.obj: pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.obj: pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.obj: pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.obj: pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-$(LIBNAME): $(OBJS)
-	-del $(LIBNAME)
-	$(LIB) $(LIBNAME) @&&|
-$(LIBOBJS), libpng$(MODEL)
-|
-
-pngtest$(MODEL).obj: pngtest.c png.h pngconf.h pnglibconf.h
-	$(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
-
-pngtest$(MODEL).exe: pngtest$(MODEL).obj
-	$(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
-# Clean up anything else you want
-clean:
-	-del pnglibconf.h
-	-del *.obj
-	-del *.exe
-	-del *.lib
-	-del *.lst
-	-del *.map
-
-# End of makefile for libpng
diff --git a/scripts/makefile.knr b/scripts/makefile.knr
deleted file mode 100644
index 307453f..0000000
--- a/scripts/makefile.knr
+++ /dev/null
@@ -1,116 +0,0 @@
-# makefile for libpng
-# Copyright (C) 2002, 2006, 2009, 2014 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# This makefile requires the file ansi2knr.c, which you can get
-# from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
-# If you have libjpeg, you probably already have ansi2knr.c in the jpeg
-# source distribution.
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location.  Example:
-#
-#    make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-CC = cc
-CPPFLAGS = -I../zlib
-CFLAGS = -O
-LDFLAGS = -L. -L../zlib/ -lpng -lz -lm
-# flags for ansi2knr
-ANSI2KNRFLAGS=
-
-RANLIB = ranlib
-#RANLIB = echo
-
-CP = cp
-RM_F = rm -f
-
-# Pre-built configuration
-# See scripts/pnglibconf.mak for more options
-PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
-	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: ansi2knr libpng.a pngtest
-
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
-
-# general rule to allow ansi2knr to work
-.c.o:
-	./ansi2knr $*.c T$*.c
-	$(CC) $(CPPFLAGS) $(CFLAGS) -c T$*.c
-	rm -f T$*.c $*.o
-	mv T$*.o $*.o
-
-ansi2knr: ansi2knr.c
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr ansi2knr.c
-
-libpng.a: ansi2knr $(OBJS)
-	ar rc $@  $(OBJS)
-	$(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
-	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
-	./pngtest
-
-install: libpng.a png.h pngconf.h pnglibconf.h
-	-@mkdir $(DESTDIR)$(INCPATH)
-	-@mkdir $(DESTDIR)$(INCPATH)/libpng
-	-@mkdir $(DESTDIR)$(LIBPATH)
-	-@rm -f $(DESTDIR)$(INCPATH)/png.h
-	-@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
-	cp png.h $(DESTDIR)$(INCPATH)/libpng
-	cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
-	cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
-	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
-	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
-	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
-	(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
-	cp libpng.a $(DESTDIR)$(LIBPATH)
-	chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
-
-clean:
-	$(RM_F) *.o libpng.a pngtest pngout.png ansi2knr pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO
-writelock:
-	chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index f4ed37f..32eb859 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -50,8 +50,7 @@
 # for pgcc version 2.95.1, -O3 is buggy; don't use it.
 
 CPPFLAGS=-I$(ZLIBINC) # -DPNG_DEBUG=5
-CFLAGS= -W -Wall -O3 -funroll-loops \
-	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
+CFLAGS=-W -Wall -O3 -funroll-loops $(ALIGN) # $(WARNMORE) -g
 
 LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng16 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
diff --git a/scripts/makefile.msc b/scripts/makefile.msc
deleted file mode 100644
index 539d62e..0000000
--- a/scripts/makefile.msc
+++ /dev/null
@@ -1,100 +0,0 @@
-# makefile for libpng
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-# Copyright (C) 2006, 2009, 2014 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
-
-# -------- Microsoft C 5.1 and later, does not use assembler code --------
-MODEL=L
-CPPFLAGS=-I..\zlib
-CFLAGS=-Oait -Gs -nologo -W3 -A$(MODEL)
-#-Ox generates bad code with MSC 5.1
-CC=cl
-LD=link
-LDFLAGS=/e/st:0x1500/noe
-CP=copy
-O=.obj
-
-# Pre-built configuration
-# See scripts\pnglibconf.mak for more options
-PNGLIBCONF_H_PREBUILT = scripts\pnglibconf.h.prebuilt
-
-#uncomment next to put error messages in a file
-ERRFILE= >> pngerrs
-
-# variables
-OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
-OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
-OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
-
-all: libpng.lib
-
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
-	del libpng.lib
-	lib libpng $(OBJS1);
-	lib libpng $(OBJS2);
-	lib libpng $(OBJS3);
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c $(ERRFILE)
-
-pngtest.exe: pngtest.obj libpng.lib
-	$(LD) $(LDFLAGS) pngtest.obj,,,libpng.lib ..\zlib\zlib.lib ;
-
-test: pngtest.exe
-	pngtest
-
-# End of makefile for libpng
-
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 6f4ba64..f6d7b58 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -44,8 +44,7 @@
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CPPFLAGS=-I$(ZLIBINC) # -DPNG_DEBUG=5
-CFLAGS= -W -Wall -O \
-	# $(WARNMORE) -g -DPNG_DEBUG=5
+CFLAGS=-W -Wall -O # $(WARNMORE) -g
 LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
 
 INCPATH=$(prefix)/include
diff --git a/scripts/makefile.solaris-x86 b/scripts/makefile.solaris-x86
deleted file mode 100644
index 4c07b06..0000000
--- a/scripts/makefile.solaris-x86
+++ /dev/null
@@ -1,243 +0,0 @@
-# makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006-2008, 2010-2014 Glenn Randers-Pehrson
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-CP=cp
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, libpng16.so*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk.  If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
-	-Wmissing-declarations -Wtraditional -Wcast-align \
-	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CPPFLAGS=-I$(ZLIBINC) # -DPNG_DEBUG=5
-CFLAGS=-W -Wall -O # $(WARNMORE) -g
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location.  Example:
-#
-#    make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-# Pre-built configuration
-# See scripts/pnglibconf.mak for more options
-PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
-	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES:      .c .o .pic.o
-
-.c.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
-
-.c.pic.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
-
-libpng.a: $(OBJS)
-	$(AR_RC) $@ $(OBJS)
-	$(RANLIB) $@
-
-libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
-	-e s!@exec_prefix@!$(exec_prefix)! \
-	-e s!@libdir@!$(LIBPATH)! \
-	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
-	( cat scripts/libpng-config-head.in; \
-	echo prefix=\"$(prefix)\"; \
-	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo cppflags=\""; \
-	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng16 -lz -lm\"; \
-	cat scripts/libpng-config-body.in ) > libpng-config
-	chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
-	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
-	@case "`type ld`" in *ucb*) \
-	echo; \
-	echo '## WARNING:'; \
-	echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
-	echo '## and /usr/ucb/ld.  If they do, you need to adjust your PATH'; \
-	echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
-	echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
-	echo '## at all.  If it is, things are likely to break because of'; \
-	echo '## the libucb dependency that is created.'; \
-	echo; \
-	;; \
-	esac
-	$(LD) -G -h $(LIBSOMAJ) \
-	 -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
-	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
-	./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
-	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
-	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
-	cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
-	chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
-	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
-	-@$(RM_F) $(DI)/libpng
-	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
-	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-	cp libpng.a $(DL)/$(LIBNAME).a
-	chmod 644 $(DL)/$(LIBNAME).a
-	-@$(RM_F) $(DL)/libpng.a
-	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
-	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
-	-@$(RM_F) $(DL)/$(LIBSO)
-	-@$(RM_F) $(DL)/$(LIBSOREL)
-	-@$(RM_F) $(DL)/$(OLDSO)
-	cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
-	chmod 755 $(DL)/$(LIBSOREL)
-	(cd $(DL); \
-	$(LN_SF) $(LIBSOREL) $(LIBSO); \
-	$(LN_SF) $(LIBSO) $(OLDSO))
-	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
-	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
-	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
-	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
-	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
-	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
-	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
-	-@$(RM_F) $(DM)/man3/libpng.3
-	-@$(RM_F) $(DM)/man3/libpngpf.3
-	cp libpng.3 $(DM)/man3
-	cp libpngpf.3 $(DM)/man3
-	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
-	-@$(RM_F) $(DM)/man5/png.5
-	cp png.5 $(DM)/man5
-
-install-config: libpng-config
-	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
-	-@$(RM_F) $(DB)/libpng-config
-	-@$(RM_F) $(DB)/$(LIBNAME)-config
-	cp libpng-config $(DB)/$(LIBNAME)-config
-	chmod 755 $(DB)/$(LIBNAME)-config
-	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location.  Use test-dd to test it
-# before then.
-
-test-dd:
-	echo
-	echo Testing installed dynamic shared library in $(DL).
-	$(CC) -I$(DI) $(CPPFLAGS) \
-	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-	   -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
-	   -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
-	./pngtestd pngtest.png
-
-test-installed:
-	echo
-	echo Testing installed dynamic shared library.
-	$(CC) $(CPPFLAGS) \
-	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
-	   -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
-	   -L$(ZLIBLIB) -R$(ZLIBLIB)
-	./pngtesti pngtest.png
-
-clean:
-	$(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
-	libpng-config $(LIBSO) $(LIBSOMAJ)* \
-	libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO
-writelock:
-	chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
diff --git a/scripts/makefile.tc3 b/scripts/makefile.tc3
deleted file mode 100644
index 1d01502..0000000
--- a/scripts/makefile.tc3
+++ /dev/null
@@ -1,100 +0,0 @@
-# Makefile for libpng
-# TurboC/C++ (Note: All modules are compiled in C mode)
-
-# To use, do "make -fmakefile.tc3"
-
-# ----- Turbo C++ 3.0 -----
-
-MODEL=l
-CPPFLAGS=-I..\zlib
-CFLAGS=-O2 -Z -m$(MODEL)
-CC=tcc
-LD=tcc
-LIB=tlib
-LDFLAGS=-m$(MODEL) -L..\zlib
-CP=copy
-
-# Pre-built configuration
-# See scripts\pnglibconf.mak for more options
-!ifndef PNGLIBCONF_H_PREBUILT
-PNGLIBCONF_H_PREBUILT = scripts\pnglibconf.h.prebuilt
-!endif
-
-O=.obj
-E=.exe
-
-# variables
-OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
-OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
-OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
-OBJSL1 = +png$(O) +pngset$(O) +pngget$(O) +pngrutil$(O) +pngtrans$(O)
-OBJSL2 = +pngwutil$(O) +pngmem$(O) +pngpread$(O) +pngread$(O) +pngerror$(O)
-OBJSL3 = +pngwrite$(O) +pngrtran$(O) +pngwtran$(O) +pngrio$(O) +pngwio$(O)
-
-all: libpng$(MODEL).lib pngtest$(E)
-
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
-
-pngtest: pngtest$(E)
-
-test: pngtest$(E)
-	pngtest$(E)
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-		  $(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
-
-libpng$(MODEL).lib: $(OBJS1) $(OBJS2) $(OBJS3)
-	$(LIB) libpng$(MODEL) +$(OBJSL1)
-	$(LIB) libpng$(MODEL) +$(OBJSL2)
-	$(LIB) libpng$(MODEL) +$(OBJSL3)
-
-pngtest$(E): pngtest$(O) libpng$(MODEL).lib
-	$(LD) $(LDFLAGS) pngtest.obj libpng$(MODEL).lib zlib_$(MODEL).lib
-
-# End of makefile for libpng