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+
+Installing libpng version 1.00 March 7, 1998
+
+Before installing libpng, you must first install zlib. zlib
+can usually be found wherever you got libpng. zlib can be
+placed in another directory, at the same level as libpng.
+Note that your system might already have a preinstalled
+zlib, but you will still need to have access to the
+zlib.h and zconf.h include files that correspond to the
+version of zlib that's installed.
+
+You can rename the directories that you downloaded (they
+might be called "libpng-1.00 or "lpng100" and "zlib-1.1.1"
+or "zlib111") so that you have directories called "zlib" and "libpng".
+
+Your directory structure should look like this:
+
+ .. (the parent directory)
+ libpng (this directory)
+ INSTALL (this file)
+ README
+ *.h
+ *.c
+ scripts
+ makefile.*
+ pngtest.png
+ etc.
+ zlib
+ README
+ *.h
+ *.c
+ contrib
+ etc.
+
+First enter the zlib directory and follow the instructions
+in zlib/README. Then come back here and choose the
+appropriate makefile.sys in the scripts directory.
+The files that are presently available in the scripts directory
+include
+
+ descrip.mms => VMS makefile for MMS or MMK
+ makefile.std => Generic UNIX makefile
+ makefile.knr => Archaic UNIX Makefile that converts files with ansi2knr
+ makefile.dec => DEC Alpha UNIX makefile
+ makefile.sgi => Silicon Graphics IRIX makefile
+ makefile.sun => Sun makefile
+ makefile.s2x => Solaris 2.X makefile (gcc, creates libpng.so.2.1.00)
+ makefile.lnx => Linux/ELF makefile (gcc, creates libpng.so.2.1.00)
+ makefile.mip => MIPS makefile
+ makefile.aco => Acorn makefile
+ makefile.ama => Amiga makefile
+ makefile.atr => Atari makefile
+ makefile.bor => Borland makefile
+ build.bat => MS-DOS batch file for Borland compiler
+ makefile.dj2 => DJGPP 2 makefile
+ makefile.msc => Microsoft C makefile
+ makefile.tc3 => Turbo C 3.0 makefile
+ makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
+ pngos2.def => OS/2 module definition file used by makefile.os2
+ makefile.wat => Watcom 10a+ Makefile, 32-bit flat memory model
+ makevms.com => VMS build script
+
+Copy the file (or files) that you need from the
+scripts directory into this directory, for example
+
+ MSDOS example: copy scripts\makefile.msd makefile
+ UNIX example: cp scripts/makefile.std makefile
+
+Read the makefile to see if you need to change any source or
+target directories to match your preferences.
+
+Then read pngconf.h to see if you want to make any configuration
+changes.
+
+Then just run "make test" which will create the libpng library in
+this directory and run a quick test that reads the "pngtest.png"
+file and writes a "pngout.png" file that should be identical to it.
+
+Most of the makefiles will allow you to run "make install" to
+put the library in its final resting place (if you want to
+do that, run "make install" in the zlib directory first if necessary).
+
+Further information can be found in the README and libpng.txt
+files, in the individual makefiles, and in png.h, and the manual
+pages libpng.3 and png.5.