Imported from libpng-1.2.3rc1.tar
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 2808d5b..3fdffc4 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -6,6 +6,6 @@
 
 Name: libpng12
 Description: Loads and saves PNG files
-Version: 1.2.2
+Version: 1.2.3rc1
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}/libpng12
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 4d12233..817c8e4 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -33,11 +33,22 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -50,12 +61,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -85,42 +99,61 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
-	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* pngtest pngout.png
+	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
+	pngtest pngout.png
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index 4b2fe85..3c0a0a6 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -33,11 +33,22 @@
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -50,12 +61,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -85,42 +99,61 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
-	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* pngtest pngout.png
+	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
+	pngtest pngout.png
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index ef8c3bd..b79bab6 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -1,7 +1,8 @@
 # makefile for libpng using gcc (generic, static library)
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
 # Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Location of the zlib library and include files
@@ -18,13 +19,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 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, that location must already exist before
+# you execute make install.
+DESTDIR=
+
 CDEBUG = -g -DPNG_DEBUG=5
 LDDEBUG =
 CRELEASE = -O2
@@ -56,14 +67,17 @@
 	$(LD) -o $@ pngtest$(O) $(LDFLAGS)
 
 install: libpng.a
-	-@if [ ! -d $(INCPATH)  ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/libpng  ]; then mkdir $(INCPATH)/libpng; fi
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@rm $(INCPATH)/png.h
-	-@rm $(INCPATH)/pngconf.h
-	cp png.h pngconf.h $(INCPATH)/libpng
-	chmod 644 $(INCPATH)/libpng/png.h $(INCPATH)/libpng/pngconf.h
-	cp libpng.a $(LIBPATH)
+	-@if [ ! -d $(DESTDIR)$(INCPATH)  ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/libpng  ]; then mkdir \
+	$(DESTDIR)$(INCPATH)/libpng; fi
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@rm $(DESTDIR)$(INCPATH)/png.h
+	-@rm $(DESTDIR)$(INCPATH)/pngconf.h
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/libpng
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h \
+	$(DESTDIR)$(INCPATH)/libpng/pngconf.h
+	(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
+	cp libpng.a $(DESTDIR)$(LIBPATH)
 
 clean:
 	/bin/rm -f *.o libpng.a pngtest pngout.png
diff --git a/scripts/makefile.atari b/scripts/makefile.atari
index c51ad6e..bc4d570 100644
--- a/scripts/makefile.atari
+++ b/scripts/makefile.atari
@@ -1,4 +1,5 @@
 # makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 # modified for LC56/ATARI assumes libz.lib is in same dir and uses default
@@ -10,6 +11,18 @@
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = $(LBR)(png.o) $(LBR)(pngset.o) $(LBR)(pngget.o) $(LBR)(pngrutil.o)\
 	$(LBR)(pngtrans.o) $(LBR)(pngwutil.o)\
@@ -25,12 +38,14 @@
 	$(CC) $(CFLAGS) $(LDFLAGS) -o$@ pngtest.o
 
 install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	-@rm -f $(prefix)/include/png.h
-	-@rm -f $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.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
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index c0e957e..4fc6d59 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -14,7 +14,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=
@@ -39,6 +39,18 @@
 prefix=/usr/local
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
+
 LIBNAME=libpng12
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
@@ -49,12 +61,15 @@
 
 .SUFFIXES:      .c .o
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 	cp $(LIBNAME).so* /boot/home/config/lib
@@ -74,41 +89,56 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index b7e3a59..a25c554 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -8,6 +8,16 @@
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
+
 # To enable assembler optimizations, add '-DPNG_USE_PNGGCCRD' to
 # $CFLAGS, and include pnggccrd.o in $OBJS, below.
 
@@ -21,8 +31,8 @@
 prefix=/usr
 
 # Where the zlib library and include files are located
-ZLIBLIB=${prefix}/lib
-ZLIBINC=${prefix}/include
+ZLIBLIB=$(DESTDIR)$(LIBPATH)
+ZLIBINC=$(DESTDIR)$(INCPATH)
 #ZLIBLIB=../zlib
 #ZLIBINC=../zlib
 
@@ -39,10 +49,10 @@
 CFLAGS=$(MINGW_CCFLAGS) -I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
 	-fomit-frame-pointer
 
+LIBNAME=libpng12
 PNGMAJ = 0
-#PNGDLL = $12
-PNGMIN = 1.2.2
-PNGMIN_BASE = 1.2.2
+PNGDLL = 12
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(PNGDLL).dll
@@ -53,18 +63,19 @@
 EXE=.exe
 
 LDFLAGS=-L. $(MINGW_LDFLAGS) -L$(ZLIBLIB) -lpng -lz
-LDSFLAGS=-shared -L.  $(MINGW_LDFLAGS) -Wl,--enable-auto-image-base
-LDEXTRA=-Wl,--out-implib=$(IMPLIB) $(SHAREDDEF)
+LDSFLAGS=-shared -L.  $(MINGW_LDFLAGS) -Wl,--export-all
+LDEXTRA=-Wl,--out-implib=$(IMPLIB)
 
 RANLIB=ranlib
 #RANLIB=echo
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+
 BINPATH=$(prefix)/bin
 MANPATH=$(prefix)/man
 MAN3PATH=$(MANPATH)/man3
-DOCPATH=$(prefix)/doc/libpng-$(PNGMIN_BASE)
+MAN5PATH=$(MANPATH)/man5
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -75,12 +86,15 @@
 .SUFFIXES:      .c .o .pic.o
 
 %.o : %.c
-	$(CC) -c $(CFLAGS) -DPNG_STATIC -DZLIB_STATIC -o $@ $<
+	$(CC) -c $(CFLAGS) -o $@ $<
 
 %.pic.o : %.c
 	$(CC) -c $(CFLAGS) -DPNG_BUILD_DLL -o $@ $<
 
-all: all-static all-shared
+all: all-static all-shared libpng.pc
+
+libpng.pc: scripts/libpng.pc.in
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 static: all-static
 
@@ -95,7 +109,7 @@
 	@echo '    You can ignore the single "control reaches end of non-void function"'
 	@echo '    warning and multiple "<variable> defined but not used" warnings:'
 	@echo ""
-	$(CC) -c $(CFLAGS) -DPNG_STATIC -DZLIB_STATIC -o $@ $*.c
+	$(CC) -c $(CFLAGS) -o $@ $*.c
 
 pnggccrd.pic.o:	png.h pngconf.h
 	@echo ""
@@ -125,7 +139,7 @@
 	$(CC) $(CFLAGS) -c $< -o $@
 
 pngtest.o: pngtest.c
-	$(CC) $(CFLAGS) -DPNG_STATIC -DZLIB_STATIC -c $< -o $@
+	$(CC) $(CFLAGS) -c $< -o $@
 
 test: test-static test-shared
 
@@ -137,30 +151,38 @@
 
 install: install-static install-shared
 
-install-static: $(STATLIB) install-headers install-docs install-man
-	-@if [ ! -d $(LIBPATH) ]; then mkdir -p $(LIBPATH); fi
-	install -m 755 $(STATLIB) $(LIBPATH)
+install-static: $(STATLIB) install-headers install-man
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir -p $(DESTDIR)$(LIBPATH); fi
+	install -m 644 $(STATLIB) $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@rm -f $(DESTDIR)$(LIBPATH)/$(STATLIB)
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a $(STATLIB))
 
-install-shared: $(SHAREDLIB) install-headers install-docs install-man
-	-@if [ ! -d $(LIBPATH) ]; then mkdir -p $(LIBPATH); fi
-	-@if [ ! -d $(BINPATH) ]; then mkdir -p $(BINPATH); fi
-	install -m 755 $(IMPLIB) $(LIBPATH)
-	install -s -m 755 $(SHAREDLIB) $(BINPATH)
+install-shared: $(SHAREDLIB) libpng.pc install-headers install-man
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir -p $(DESTDIR)$(LIBPATH); fi
+	-@if [ ! -d $(DESTDIR)$(BINPATH) ]; then mkdir -p $(DESTDIR)$(BINPATH); fi
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir -p $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	install -m 644 $(IMPLIB) $(DESTDIR)$(LIBPATH)/$(LIBNAME).dll.a
+	-@rm -f $(DESTDIR)$(LIBPATH)/$(IMPLIB)
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).dll.a $(IMPLIB))
+	install -s -m 755 $(SHAREDLIB) $(DESTDIR)$(BINPATH)
+	install -m 644 libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/$(LIBNAME).pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
 install-headers:
-	-@if [ ! -d $(INCPATH)]; then mkdir -p $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/libpng  ]; then mkdir -p $(INCPATH)/libpng; fi
-	-@rm -f ${INCPATH)/png.h
-	-@rm -f ${INCPATH)/pngconf.h
-	install -m 644 png.h pngconf.h $(INCPATH)
-
-install-docs:
-	-@if [ ! -d $(DOCPATH) ]; then mkdir -p $(DOCPATH); fi
-	install -m 644 $(DOCS) $(DOCPATH)
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir -p $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then mkdir -p $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	-@rm -f $(DESTDIR)$(INCPATH)/png.h
+	-@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+	install -m 644 png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	-@rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-man:
-	-@if [ ! -d $(MAN3PATH) ]; then mkdir -p $(MAN3PATH); fi
-	install -m 644 libpngpf.3 libpng.3 $(MAN3PATH)
+	-@if [ ! -d $(DESTDIR)$(MAN3PATH) ]; then mkdir -p $(DESTDIR)$(MAN3PATH); fi
+	-@if [ ! -d $(DESTDIR)$(MAN5PATH) ]; then mkdir -p $(DESTDIR)$(MAN5PATH); fi
+	install -m 644 libpngpf.3 libpng.3 $(DESTDIR)$(MAN3PATH)
+	install -m 644 png.5 $(DESTDIR)$(MAN5PATH)
 
 clean:
 	/bin/rm -f *.pic.o *.o $(STATLIB) $(IMPLIB) $(SHAREDLIB) \
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index cefb724..936d467 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -25,12 +25,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -43,12 +54,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -fno-common -o $@ $*.c
 
-all: libpng.a $(LIBNAME).dylib pngtest
+all: libpng.a $(LIBNAME).dylib pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).dylib: $(LIBNAME).$(PNGMAJ).dylib
 	ln -sf $(LIBNAME).$(PNGMAJ).dylib $(LIBNAME).dylib
 
@@ -57,7 +71,7 @@
 
 $(LIBNAME).$(PNGVER).dylib: $(OBJSDLL)
 	$(CC) -dynamiclib \
-	 -install_name $(LIBPATH)/$(LIBNAME).$(PNGMAJ).dylib \
+	 -install_name $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ).dylib \
 	 -current_version $(PNGMIN) -compatibility_version $(PNGMIN) \
 	 -o $(LIBNAME).$(PNGVER).dylib \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
@@ -69,42 +83,54 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h $(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).dylib
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.dylib
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).dylib
-	-@/bin/rm -f $(LIBPATH)/libpng.dylib
-	-@/bin/rm -f $(LIBPATH)/libpng.3.dylib
-	-@/bin/rm -f $(LIBPATH)/libpng.3.*.dylib
-	cp $(LIBNAME).$(PNGVER).dylib $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).$(PNGVER).dylib
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.dylib
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).dylib
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.dylib
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.3.dylib
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.3.*.dylib
+	cp $(LIBNAME).$(PNGVER).dylib $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGVER).dylib
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.3.dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib libpng.3.$(PNGMIN).dylib; \
 	ln -sf $(LIBNAME).$(PNGVER).dylib $(LIBNAME).$(PNGMAJ).dylib; \
 	ln -sf $(LIBNAME).$(PNGMAJ).dylib $(LIBNAME).dylib)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	rm -f *.o libpng.a $(LIBNAME).*dylib pngtest pngout.png
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index 55b1695..fb80cd1 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -1,5 +1,5 @@
 # makefile for libpng on DEC Alpha Unix
-# Copyright (C) 2000 Glenn Randers-Pehrson
+# Copyright (C) 2000-2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
@@ -7,6 +7,17 @@
 prefix=/usr/local
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
@@ -17,7 +28,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -32,12 +43,15 @@
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
 
-all: $(LIBNAME).so libpng.a pngtest
+all: $(LIBNAME).so libpng.a pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -54,41 +68,56 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* pngtest pngout.png
diff --git a/scripts/makefile.dj2 b/scripts/makefile.dj2
index 8ba1770..09045c2 100644
--- a/scripts/makefile.dj2
+++ b/scripts/makefile.dj2
@@ -1,10 +1,13 @@
 # DJGPP (DOS gcc) makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
-# where make install puts libpng.a and png.h
+# where make install will put libpng.a and png.h
 #prefix=/usr/local
 prefix=.
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
 
 CC=gcc
 CFLAGS=-I../zlib -O
diff --git a/scripts/makefile.freebsd b/scripts/makefile.freebsd
index 3423768..717e755 100644
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -3,8 +3,23 @@
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
+.include <bsd.own.mk>
+
 # where make install puts libpng.a and png.h
 prefix=/usr/local
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 PNGMAJ= 5
 .if (${OBJFORMAT} == "elf")
@@ -49,23 +64,22 @@
 	./pngtest
 
 install: libpng.a libpng.so.${PNGVER}
-	-@mkdir $(prefix)/include/libpng
+	-@mkdir $(DESTDIR)$(INCPATH)/libpng
 	${INSTALL} -o ${INCOWN} -g ${INCGRP} -m ${INCMODE} \
-		png.h pngconf.h $(prefix)/include/libpng
-	ln -sf libpng/png.h $(prefix)/include/png.h
-	ln -sf libpng/pngconf.h $(prefix)/include/pngconf.h
+		png.h pngconf.h $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); rm -f png.h pngconf.h; ln -sf libpng/*.h .)
 	${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
-		libpng.a libpng.so.${PNGVER} $(prefix)/lib
-	$(RANLIB) $(prefix)/lib/libpng.a
-	ln -sf libpng.so.${PNGVER} $(prefix)/lib/libpng.so
+		libpng.a libpng.so.${PNGVER} $(DESTDIR)$(LIBPATH)
+	$(RANLIB) $(DESTDIR)$(LIBPATH)/libpng.a
+	ln -sf libpng.so.${PNGVER} $(DESTDIR)$(LIBPATH)/libpng.so
 	/sbin/ldconfig -R
 	${INSTALL} -o ${MANOWN} -g ${MANGRP} -m ${MANMODE} \
-		libpng.3 libpngpf.3 $(prefix)/man/man3
+		libpng.3 libpngpf.3 $(DESTDIR)$(MANPATH)/man3
 	${INSTALL} -o ${MANOWN} -g ${MANGRP} -m ${MANMODE} \
-		png.5 $(prefix)/man/man5
+		png.5 $(DESTDIR)$(MANPATH)/man5
 
 clean:
-	rm -f *.o libpng.a libpng.so libpng.so.${PNGVER} pngtest pngout.png
+	rm -f *.o *.so libpng.a libpng.so.${PNGVER} pngtest pngout.png
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index 18a5070..a9b376b 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -15,7 +15,7 @@
 
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=gcc
@@ -62,6 +62,17 @@
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -74,7 +85,10 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest pngtest-static
+all: libpng.a $(LIBNAME).so pngtest pngtest-static libpng.pc
+
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 pnggccrd.o:	pnggccrd.c png.h pngconf.h
 	$(CC) -c $(CFLAGS) -o $@ $*.c
@@ -82,7 +96,7 @@
 pnggccrd.pic.o:	pnggccrd.c png.h pngconf.h
 	$(CC) -c $(CFLAGS) -fPIC -o $@ pnggccrd.c
 
-$(LIBNAME).a: $(OBJS)
+libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
@@ -99,7 +113,7 @@
 pngtest: pngtest.o $(LIBNAME).so
 	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
 
-pngtest-static: pngtest.o $(LIBNAME).a
+pngtest-static: pngtest.o libpng.a
 	$(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
 
 test: pngtest pngtest-static
@@ -113,41 +127,56 @@
 	./pngtest-static
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 081a01e..a504005 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -35,12 +35,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -53,12 +64,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).sl pngtest
+all: libpng.a $(LIBNAME).sl pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).sl: $(LIBNAME).sl.$(PNGMAJ)
 	ln -f -s $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl
 
@@ -77,41 +91,57 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then \
+	mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).sl.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).sl
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).sl.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).sl
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).sl.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) $(LIBNAME).sl.$(PNGMAJ); \
 	ln -sf $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
+	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(SHAREDLIB).sl $(SHAREDLIB).sl.$(PNGMAJ)* \
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 996cb95..f31692d 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -19,14 +19,25 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 # where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
-LIBPATH=$prefix/lib
-INCPATH=$prefix/include
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -39,12 +50,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) +z -o $@ $*.c
 
-all: libpng.a $(LIBNAME).sl pngtest
+all: libpng.a $(LIBNAME).sl pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).sl: $(LIBNAME).sl.$(PNGMAJ)
 	ln -sf $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl
 
@@ -63,41 +77,56 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).sl.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).sl
-	-@/bin/rm -f $(LIBPATH)/libpng.sl
-	-@/bin/rm -f $(LIBPATH)/libpng.sl.3
-	-@/bin/rm -f $(LIBPATH)/libpng.sl.3.*
-	cp $(LIBNAME).sl.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).sl
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.sl.3.*
+	cp $(LIBNAME).sl.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).sl.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3; \
 	ln -sf $(LIBNAME).sl.$(PNGVER) libpng.sl.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).sl.$(PNGVER) $(LIBNAME).sl.$(PNGMAJ); \
 	ln -sf $(LIBNAME).sl.$(PNGMAJ) $(LIBNAME).sl)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).sl $(LIBNAME).sl.$(PNGMAJ)* \
diff --git a/scripts/makefile.knr b/scripts/makefile.knr
index 4d7707b..1e59fda 100644
--- a/scripts/makefile.knr
+++ b/scripts/makefile.knr
@@ -1,4 +1,5 @@
 # makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
@@ -9,6 +10,18 @@
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 CC=cc
 CFLAGS=-I../zlib -O
@@ -46,17 +59,18 @@
 	./pngtest
 
 install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	-@rm -f $(prefix)/include/png.h
-	-@rm -f $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.h
-	cp libpng.a $(prefix)/lib
-	chmod 644 $(prefix)/lib/libpng.a
+	-@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
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.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
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index a87721f..633d00c 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -5,12 +5,12 @@
 
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=gcc
 
-# where "make install" puts libpng.a, libpng12/libpng12.so*,
+# where "make install" puts libpng12.a, libpng12/libpng12.so*,
 # libpng12/png.h and libpng12/pngconf.h
 prefix=/usr/local
 
@@ -41,6 +41,17 @@
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -53,12 +64,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -73,7 +87,7 @@
 pngtest: pngtest.o $(LIBNAME).so
 	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
 
-pngtest-static: pngtest.o $(LIBNAME).a
+pngtest-static: pngtest.o libpng.a
 	$(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
 
 test: pngtest pngtest-static
@@ -87,42 +101,56 @@
 	./pngtest-static
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -sf $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -sf $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -sf $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -sf $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
+	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
 
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNMAJ)* \
diff --git a/scripts/makefile.macosx b/scripts/makefile.macosx
index 5acb765..d32a221 100644
--- a/scripts/makefile.macosx
+++ b/scripts/makefile.macosx
@@ -15,17 +15,31 @@
 ZLIBINC=../zlib
 
 CC=cc
-CFLAGS=-fno-common -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
-LDSHARED=cc -lz -dynamiclib -compatibility_version $(VER) -current_version $(VER)
 
 PNGMAJ = 0
-PNGMIN = 1.2.2
-VER = $(PNGMAJ).$(PNGMIN)
+PNGMIN = 1.2.3rc1
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+CFLAGS=-fno-common -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
+LDSHARED=cc -lz -dynamiclib -compatibility_version $(PNGVER) \
+-current_version $(PNGVER)
+
 LIBNAME=libpng12
 SHAREDLIB_POSTFIX=dylib
-LIBPATH=$(prefix)/lib
 INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 #RANLIB=echo
 RANLIB=ranlib
@@ -34,15 +48,18 @@
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
 
-all: libpng.a pngtest shared
+all: libpng.a pngtest shared libpng.pc
 
-shared: $(LIBNAME).$(VER).$(SHAREDLIB_POSTFIX)
+shared: $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
+
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
 	$(RANLIB) $@
 
-$(LIBNAME).$(VER).$(SHAREDLIB_POSTFIX): $(OBJS)
+$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX): $(OBJS)
 	$(LDSHARED) -o $@ $(OBJS)
 
 pngtest: pngtest.o libpng.a
@@ -53,51 +70,67 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.$(SHAREDLIB_POSTFIX)
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).$(SHAREDLIB_POSTFIX)
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGMAJ)*.$(SHAREDLIB_POSTFIX)
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(SHAREDLIB_POSTFIX)
 	-@/bin/rm -f libpng.$(SHARED_POSTFIX)
 	-@/bin/rm -f libpng.3.$(SHARED_POSTFIX)
 	-@/bin/rm -f libpng.3.*.$(SHARED_POSTFIX)
-	cp $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
-	(cd $(LIBPATH); \
-	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) ]
+	cp $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX)
+	(cd $(DESTDIR)$(LIBPATH); \
+	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) \
 	libpng.$(SHARED_POSTFIX); \
-	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) ]
+	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) \
 	libpng.3.$(SHARED_POSTFIX); \
-	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) ]
+	ln -f -s $(LIBNAME).$(PNGVER).$(SHARED_POSTFIX) \
 	libpng.3.$(PNGMIN).$(SHARED_POSTFIX); \
 	ln -sf $(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
 	$(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX); \
 	ln -sf $(LIBNAME).$(PNGMAJ).$(SHAREDLIB_POSTFIX) \
 	$(LIBNAME).$(SHAREDLIB_POSTFIX))
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -sf libpng12.pc libpng.pc)
 
-install: install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	rm -f *.o libpng.a pngtest pngout.png \
-	$(LIBNAME).$(VER).$(SHAREDLIB_POSTFIX) \
+	$(LIBNAME).$(PNGVER).$(SHAREDLIB_POSTFIX) \
 	$(LIBNAME).$(SHAREDLIB_POSTFIX)
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
diff --git a/scripts/makefile.mips b/scripts/makefile.mips
index 602a2f9..320b185 100644
--- a/scripts/makefile.mips
+++ b/scripts/makefile.mips
@@ -1,9 +1,22 @@
 # makefile for libpng
+# Copyright (C) Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 CC=cc
 CFLAGS=-I../zlib -O -systype sysv -DSYSV -w -Dmips
@@ -30,17 +43,18 @@
 	./pngtest
 
 install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	-@rm -f $(prefix)/include/png.h
-	-@rm -f $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.h
-	cp libpng.a $(prefix)/lib
-	chmod 644 $(prefix)/lib/libpng.a
+	-@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
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.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
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 98be5df..b8ad349 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -13,7 +13,7 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.2
+SHLIB_MINOR=	1.2.3rc1
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 348f838..fc1c6e4 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -13,7 +13,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.2
+SHLIB_MINOR=	1.2.3rc1
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 4a080b5..852a198 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -7,7 +7,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.2
+SHLIB_MINOR=	1.2.3rc1
 
 LIB=	png
 SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
@@ -65,6 +65,8 @@
 	${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
 		-m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include/libpng
 	${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
+		-m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
+	${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
 		-m ${NONBINMODE} ${DOCS} ${DESTDIR}${PREFIX}/share/doc/png
 
 .include <bsd.lib.mk>
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index fceeaa7..bc01201 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -1,6 +1,7 @@
 # makefile for SCO OSr5  ELF and Unixware 7 with Native cc
 # Contributed by Mike Hopkirk (hops@sco.com) modified from Makefile.lnx
 #   force ELF build dynamic linking, SONAME setting in lib and RPATH in app
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
@@ -25,12 +26,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 INCPATH=$(prefix)/include/libpng
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -43,12 +55,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -67,43 +82,60 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	-@/bin/rm -f $(INCPATH)/png.h
-	-@/bin/rm -f $(INCPATH)/pngconf.h
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/pngconf.h
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
+
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* pngtest pngout.png
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index eb7571e..94d4f3f 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -5,6 +5,18 @@
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 # Where the zlib library and include files are located
 ZLIBLIB=/usr/local/lib32
@@ -24,12 +36,24 @@
 LDSHARED=CC $(ABI) -shared
 
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 # See "man dso" for info about shared objects
-LIBS=libpng12.so.$(PNGMAJ).$(PNGVER)
+LIBS=libpng12.so.$(PNGVER)
 LIBNAME=libpng12
+INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib32
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 RANLIB=echo
 #RANLIB=ranlib
@@ -38,12 +62,15 @@
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
 
-all: libpng.a $(LIBNAME).so.$(PNGVER) pngtest
+all: libpng.a $(LIBNAME).so.$(PNGVER) pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so.$(PNGVER): $(OBJS)
 	$(LDSHARED) -o $@ $(OBJS)
 	rm -f $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)
@@ -58,41 +85,57 @@
 
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	rm -f *.o libpng.a pngtest pngout.png
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index d201416..1c5c815 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -31,7 +31,7 @@
 # See "man dso" for info about shared objects
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 RANLIB=echo
@@ -40,14 +40,28 @@
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
 #LIBPATH=$(prefix)/lib32
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = pnggccrd.o 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: libpng.a pngtest shared
+all: libpng.a pngtest shared libpng.pc
 
-shared: $(LIBNAME).so.$(PNGMAJ).$(PNGVER)
+shared: $(LIBNAME).so.$(PNGVER)
+
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
@@ -66,41 +80,58 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
+
 
 clean:
 	rm -f *.o libpng.a pngtest pngout.png $(LIBNAME).so \
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index 6640ecd..69f8335 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -1,6 +1,7 @@
 # makefile for libpng on Solaris 9 (beta) with Forte cc
 # Updated by Chad Schrock for Solaris 9
 # Contributed by William L. Sebok, based on makefile.linux
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1998-2001 Greg Roelofs
 # Copyright (C) 1996-1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
@@ -35,12 +36,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -53,12 +65,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -88,41 +103,58 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then mkdir \
+	$(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
+
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index 1a857a3..a701078 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -32,12 +32,23 @@
 # read libpng.txt or png.h to see why PNGMAJ is 0.  You should not
 # have to change it.
 PNGMAJ = 0
-PNGMIN = 1.2.2
+PNGMIN = 1.2.3rc1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
 INCPATH=$(prefix)/include
 LIBPATH=$(prefix)/lib
+MANPATH=$(prefix)/man
+
+# 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
@@ -50,12 +61,15 @@
 .c.pic.o:
 	$(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
 
-all: libpng.a $(LIBNAME).so pngtest
+all: libpng.a $(LIBNAME).so pngtest libpng.pc
 
 libpng.a: $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
 
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
 	ln -f -s $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 
@@ -85,41 +99,57 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(INCPATH) ]; then mkdir $(INCPATH); fi
-	-@if [ ! -d $(INCPATH)/$(LIBNAME) ]; then mkdir $(INCPATH)/$(LIBNAME); fi
-	cp png.h pngconf.h $(INCPATH)/$(LIBNAME)
-	chmod 644 $(INCPATH)/$(LIBNAME)/png.h $(INCPATH)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/png.h $(INCPATH)/pngconf.h
-	-@/bin/rm -f $(INCPATH)/libpng
-	ln -f -s $(INCPATH)/$(LIBNAME) $(INCPATH)/libpng
+	-@if [ ! -d $(DESTDIR)$(INCPATH) ]; then mkdir $(DESTDIR)$(INCPATH); fi
+	-@if [ ! -d $(DESTDIR)$(INCPATH)/$(LIBNAME) ]; then \
+	mkdir $(DESTDIR)$(INCPATH)/$(LIBNAME); fi
+	cp png.h pngconf.h $(DESTDIR)$(INCPATH)/$(LIBNAME)
+	chmod 644 $(DESTDIR)$(INCPATH)/$(LIBNAME)/png.h \
+	$(DESTDIR)$(INCPATH)/$(LIBNAME)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/png.h $(DESTDIR)$(INCPATH)/pngconf.h
+	-@/bin/rm -f $(DESTDIR)$(INCPATH)/libpng
+	(cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
+	ln -f -s $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	cp libpng.a $(LIBPATH)/$(LIBNAME).a
-	chmod 644 $(LIBPATH)/$(LIBNAME).a
-	-@/bin/rm -f $(LIBPATH)/libpng.a
-	ln -f -s $(LIBPATH)/$(LIBNAME).a $(LIBPATH)/libpng.a
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	cp libpng.a $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	chmod 644 $(DESTDIR)$(LIBPATH)/$(LIBNAME).a
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.a
+	(cd $(DESTDIR)$(LIBPATH); ln -f -s $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER)
-	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
-	-@/bin/rm -f $(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* $(LIBPATH)/$(LIBNAME).so
-	-@/bin/rm -f $(LIBPATH)/libpng.so
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3
-	-@/bin/rm -f $(LIBPATH)/libpng.so.3.*
-	cp $(LIBNAME).so.$(PNGVER) $(LIBPATH)
-	chmod 755 $(LIBPATH)/$(LIBNAME).so.$(PNGVER)
-	(cd $(LIBPATH); \
+	-@if [ ! -d $(DESTDIR)$(LIBPATH) ]; then mkdir $(DESTDIR)$(LIBPATH); fi
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGMAJ)* \
+	$(DESTDIR)$(LIBPATH)/$(LIBNAME).so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3
+	-@/bin/rm -f $(DESTDIR)$(LIBPATH)/libpng.so.3.*
+	cp $(LIBNAME).so.$(PNGVER) $(DESTDIR)$(LIBPATH)
+	chmod 755 $(DESTDIR)$(LIBPATH)/$(LIBNAME).so.$(PNGVER)
+	(cd $(DESTDIR)$(LIBPATH); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) libpng.so.3.$(PNGMIN); \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so; \
 	ln -f -s $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ))
-	-@if [ ! -d $(LIBPATH)/pkgconfig ]; then mkdir $(LIBPATH)/pkgconfig; fi
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
-	cp libpng.pc $(LIBPATH)/pkgconfig/libpng12.pc
-	chmod 644 $(LIBPATH)/pkgconfig/libpng12.pc
+	-@if [ ! -d $(DESTDIR)$(LIBPATH)/pkgconfig ]; then \
+	mkdir $(DESTDIR)$(LIBPATH)/pkgconfig; fi
+	cp libpng.pc $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	chmod 644 $(DESTDIR)$(LIBPATH)/pkgconfig/libpng12.pc
+	(cd $(DESTDIR)$(LIBPATH)/pkgconfig; ln -f -s libpng12.pc libpng.pc)
 
-install: install-static install-shared
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(MANPATH) ]; then mkdir $(MANPATH); fi
+	-@if [ ! -d $(MANPATH)/man3 ]; then mkdir $(MANPATH)/man3; fi
+	-@/bin/rm -f $(MANPATH)/man3/libpng.3
+	-@/bin/rm -f $(MANPATH)/man3/libpngpf.3
+	cp libpng.3 $(MANPATH)/man3
+	cp libpngpf.3 $(MANPATH)/man3
+	-@if [ ! -d $(MANPATH)/man5 ]; then mkdir $(MANPATH)/man5; fi
+	-@/bin/rm -f $(MANPATH)/man5/png.5
+	cp png.5 $(MANPATH)/man5
+
+install: install-static install-shared install-man
 
 clean:
 	/bin/rm -f *.o libpng.a $(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* \
diff --git a/scripts/makefile.std b/scripts/makefile.std
index 15e569a..85ac06c 100644
--- a/scripts/makefile.std
+++ b/scripts/makefile.std
@@ -1,9 +1,22 @@
 # makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
@@ -35,17 +48,18 @@
 	./pngtest
 
 install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	-@rm -f $(prefix)/include/png.h
-	-@rm -f $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.h
-	cp libpng.a $(prefix)/lib
-	chmod 644 $(prefix)/lib/libpng.a
+	-@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
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.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
diff --git a/scripts/makefile.sunos b/scripts/makefile.sunos
index cdce372..5f29960 100644
--- a/scripts/makefile.sunos
+++ b/scripts/makefile.sunos
@@ -1,9 +1,22 @@
 # makefile for libpng
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # 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, that location must already exist before
+# you execute make install.
+DESTDIR=
 
 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
@@ -39,17 +52,18 @@
 	./pngtest
 
 install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	-@rm -f $(prefix)/include/png.h
-	-@rm -f $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.h
-	cp libpng.a $(prefix)/lib
-	chmod 644 $(prefix)/lib/libpng.a
+	-@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
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
+	chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.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
diff --git a/scripts/pngdef.pas b/scripts/pngdef.pas
index d22c308..72ba08f 100644
--- a/scripts/pngdef.pas
+++ b/scripts/pngdef.pas
@@ -7,8 +7,8 @@
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.2.2';
-  PNG_LIBPNG_VER        =  10202;
+  PNG_LIBPNG_VER_STRING = '1.2.3rc1';
+  PNG_LIBPNG_VER        =  10203;
 
 type
   png_uint_32 = Cardinal;
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index 35c904f..6f8a923 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.2
+; Version 1.2.3rc1
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -197,8 +197,6 @@
   png_init_mmx_flags
 
 ; Added at version 1.2.2:
-  png_zalloc
-  png_zfree
   png_handle_as_unknown
 
 ; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
diff --git a/scripts/xmakefile.freebsd b/scripts/xmakefile.freebsd
deleted file mode 100644
index e07077d..0000000
--- a/scripts/xmakefile.freebsd
+++ /dev/null
@@ -1,77 +0,0 @@
-# makefile for libpng under FreeBSD
-# Copyright (C) 2002 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-# For conditions of distribution and use, see copyright notice in png.h
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-
-# Building shared libraries is handled by the FreeBSD external Makefile,
-# which uses this makefile.
-
-.if ${MACHINE_ARCH} == "i386"
-CFLAGS+= -I. -O -DPNG_USE_PNGGCCRD
-.else
-CFLAGS+= -I. -O -DPNG_USE_PNGGCCRD -DPNG_NO_ASSEMBLER_CODE
-.endif
-LDFLAGS+=-L. -lpng -lz -lm
-
-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 pnggccrd.o
-
-all: libpng.a pngtest
-
-libpng.a: $(OBJS)
-	ar rc $@  $(OBJS)
-	$(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
-	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
-	./pngtest
-
-install: libpng.a
-	-@mkdir $(prefix)/include
-	-@mkdir $(prefix)/include/libpng
-	-@mkdir $(prefix)/lib
-	cp png.h $(prefix)/include
-	cp pngconf.h $(prefix)/include
-	chmod 644 $(prefix)/include/png.h
-	chmod 644 $(prefix)/include/pngconf.h
-	cp png.h $(prefix)/include/libpng
-	cp pngconf.h $(prefix)/include/libpng
-	chmod 644 $(prefix)/include/libpng/png.h
-	chmod 644 $(prefix)/include/libpng/pngconf.h
-	cp libpng.a $(prefix)/lib
-	chmod 644 $(prefix)/lib/libpng.a
-	$(RANLIB) $(prefix)/lib/libpng.a
-
-clean:
-	rm -f *.o libpng.a pngtest pngout.png
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
-	chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h
-pngerror.o: png.h pngconf.h
-pngrio.o: png.h pngconf.h
-pngwio.o: png.h pngconf.h
-pngmem.o: png.h pngconf.h
-pngset.o: png.h pngconf.h
-pngget.o: png.h pngconf.h
-pngread.o: png.h pngconf.h
-pngrtran.o: png.h pngconf.h
-pngrutil.o: png.h pngconf.h
-pngtest.o: png.h pngconf.h
-pngtrans.o: png.h pngconf.h
-pngwrite.o: png.h pngconf.h
-pngwtran.o: png.h pngconf.h
-pngwutil.o: png.h pngconf.h
-pngpread.o: png.h pngconf.h
-pnggccrd.o: png.h pngconf.h
-