2 Installing libpng version 1.2.0 - September 1, 2001
4 Before installing libpng, you must first install zlib. zlib
5 can usually be found wherever you got libpng. zlib can be
6 placed in another directory, at the same level as libpng.
7 Note that your system might already have a preinstalled
8 zlib, but you will still need to have access to the
9 zlib.h and zconf.h include files that correspond to the
10 version of zlib that's installed.
12 You can rename the directories that you downloaded (they
13 might be called "libpng-1.2.0" or "lpng109" and "zlib-1.1.3"
14 or "zlib113") so that you have directories called "zlib" and "libpng".
16 Your directory structure should look like this:
18 .. (the parent directory)
19 libpng (this directory)
47 If the line endings in the files look funny, you may wish to get the other
48 distribution of libpng. It is available in both tar.gz (UNIX style line
49 endings) and zip (DOS style line endings) formats.
51 If you are building libpng with MSVC, you can enter the libpng\msvc directory
52 and follow the instructions in msvc\README.txt.
54 You can build libpng for WindowsCE by entering the downloading and installing
55 the libpng\wince directory as instructed in the projects\wince.txt file, and
56 then following the instructions in the README* files. Similarly, you can
57 build libpng for Netware as instructed in projects\netware.txt.
59 Else enter the zlib directory and follow the instructions in zlib/README,
60 then come back here and choose the appropriate makefile.sys in the scripts
63 The files that are presently available in the scripts directory
66 makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
67 makefile.linux => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0)
68 makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0,
69 uses assembler code tuned for Intel MMX platform)
70 makefile.gcc => Generic makefile (gcc, creates static libpng.a)
71 makefile.knr => Archaic UNIX Makefile that converts files with
72 ansi2knr (Requires ansi2knr.c from
73 ftp://ftp.cs.wisc.edu/ghost)
74 makefile.aix => AIX makefile
75 makefile.cygwin => Cygwin/gcc makefile
76 makefile.dec => DEC Alpha UNIX makefile
77 makefile.hpgcc => HPUX makefile using gcc
78 makefile.hpux => HPUX (10.20 and 11.00) makefile
79 makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
80 makefile.intel => Intel C/C++ version 4.0 and later
81 libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
82 makefile.macosx => MACOS X Makefile
83 makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD
84 makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
85 makefile.sggcc => Silicon Graphics (gcc, creates libpng.so.2.1.2.0)
86 makefile.sunos => Sun makefile
87 makefile.solaris => Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0)
88 makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
89 makefile.mips => MIPS makefile
90 makefile.acorn => Acorn makefile
91 makefile.amiga => Amiga makefile
92 smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
93 (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
94 makefile.atari => Atari makefile
95 makefile.beos => BEOS makefile for X86
96 makefile.bor => Borland makefile (uses bcc)
97 makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
98 makefile.bd32 => To make a png32bd.dll with Borland C++ 4.5
99 makefile.tc3 => Turbo C 3.0 makefile
100 makefile.dj2 => DJGPP 2 makefile
101 makefile.msc => Microsoft C makefile
102 makefile.vcawin32 => makefile for Microsoft Visual C++ 5.0 and later (uses
103 assembler code tuned for Intel MMX platform)
104 makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later (does
105 not use assembler code)
106 makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
107 pngos2.def => OS/2 module definition file used by makefile.os2
108 makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
109 makevms.com => VMS build script
110 descrip.mms => VMS makefile for MMS or MMK
111 pngdef.pas => Defines for a png32bd.dll with Borland C++ 4.5
112 SCOPTIONS.ppc => Used with smakefile.ppc
114 Copy the file (or files) that you need from the
115 scripts directory into this directory, for example
117 MSDOS example: copy scripts\makefile.msc makefile
118 UNIX example: cp scripts/makefile.std makefile
120 Read the makefile to see if you need to change any source or
121 target directories to match your preferences.
123 Then read pngconf.h to see if you want to make any configuration
126 Then just run "make test" which will create the libpng library in
127 this directory and run a quick test that reads the "pngtest.png"
128 file and writes a "pngout.png" file that should be identical to it.
129 Look for "9782 zero samples" in the output of the test. For more
130 confidence, you can run another test by typing "pngtest pngnow.png"
131 and looking for "289 zero samples" in the output. Also, you can
132 run "pngtest -m *.png" in the "contrib/pngsuite" directory and compare
133 your output with the result shown in contrib/pngsuite/README.
135 Most of the makefiles will allow you to run "make install" to
136 put the library in its final resting place (if you want to
137 do that, run "make install" in the zlib directory first if necessary).
139 Further information can be found in the README and libpng.txt
140 files, in the individual makefiles, in png.h, in the README files in
141 subdirectories of the LIB directory, and the manual pages libpng.3 and png.5.