-README for libpng version 1.2.6 - August 15, 2004 (shared library 12.0)
+README for libpng version 1.4.4 - September 23, 2010 (shared library 14.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
-Libpng comes in several distribution formats. Get libpng-*.tar.gz
-or libpng-*.tar.bz2 if you want UNIX-style line endings in the text
-files, or lpng*.zip if you want DOS-style line endings.
+Libpng comes in several distribution formats. Get libpng-*.tar.gz,
+libpng-*.tar.xz or libpng-*.tar.bz2 if you want UNIX-style line endings
+in the text files, or lpng*.zip if you want DOS-style line endings.
Version 0.89 was the first official release of libpng. Don't let the
fact that it's the first release fool you. The libpng library has been in
critical or an ancillary chunk.
The changes made to the library, and bugs fixed are based on discussions
-on the PNG implementation mailing list <png-implement@ccrc.wustl.edu>
-and not on material submitted privately to Guy, Andreas, or Glenn. They will
-forward any good suggestions to the list.
+on the PNG-implement mailing list and not on material submitted
+privately to Guy, Andreas, or Glenn. They will forward any good
+suggestions to the list.
For a detailed description on using libpng, read libpng.txt. For
examples of libpng in a program, see example.c and pngtest.c. For usage
You can use zlib as a drop-in replacement for fread() and fwrite() if
you are so inclined.
-zlib should be available at the same place that libpng is.
-If not, it should be at ftp.uu.net in /graphics/png
-Eventually, it will be at ftp.uu.net in /pub/archiving/zip/zlib
+zlib should be available at the same place that libpng is, or at.
+ftp://ftp.info-zip.org/pub/infozip/zlib
You may also want a copy of the PNG specification. It is available
-as an RFC and a W3C Recommendation. Failing
-these resources you can try ftp.uu.net in the /graphics/png directory.
+as an RFC, a W3C Recommendation, and an ISO/IEC Standard. You can find
+these at http://www.libpng.org/pub/png/documents/
-This code is currently being archived at ftp.uu.net in the
-/graphics/png directory, and on CompuServe, Lib 20 (PNG SUPPORT)
+This code is currently being archived at libpng.sf.net in the
+[DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
at GO GRAPHSUP. If you can't find it in any of those places,
e-mail me, and I'll help you find it.
fix. Please mention "libpng" somewhere in the subject line. Thanks.
This release was created and will be supported by myself (of course
-based in a large way on Guy's and Andreas' earlier work), and the PNG group.
+based in a large way on Guy's and Andreas' earlier work), and the PNG
+development group.
-glennrp@users.sourceforge.net
-png-implement@ccrc.wustl.edu
+Send comments/corrections/commendations to png-mng-implement at
+lists.sourceforge.net (subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe) or to glennrp at users.sourceforge.net
You can't reach Guy, the original libpng author, at the addresses
-given in previous versions of this document. He and Andreas will read mail
-addressed to the png-implement list, however.
+given in previous versions of this document. He and Andreas will
+read mail addressed to the png-implement list, however.
Please do not send general questions about PNG. Send them to
-the address in the specification (png-group@w3.org). At the same
-time, please do not send libpng questions to that address, send them to me
-or to png-implement@ccrc.wustl.edu. I'll
+the (png-list at ccrc.wustl.edu, subscription required, write to
+majordomo at ccrc.wustl.edu with "subscribe png-list" in your message).
+On the other hand,
+please do not send libpng questions to that address, send them to me
+or to the png-implement list. I'll
get them in the end anyway. If you have a question about something
in the PNG specification that is related to using libpng, send it
to me. Send me any questions that start with "I was using libpng,
to others, if necessary.
Please do not send suggestions on how to change PNG. We have
-been discussing PNG for three years now, and it is official and
+been discussing PNG for nine years now, and it is official and
finished. If you have suggestions for libpng, however, I'll
-gladly listen. Even if your suggestion is not used for version
-1.0, it may be used later.
+gladly listen. Even if your suggestion is not used immediately,
+it may be used later.
Files in this distribution:
png.c => Basic interface functions common to library
png.h => Library function and interface declarations
pngconf.h => System specific library configuration
- pngasmrd.h => Header file for assembler-coded functions
pngerror.c => Error/warning message I/O functions
pngget.c => Functions for retrieving info from struct
pngmem.c => Memory handling functions
pngminus => Simple pnm2png and png2pnm programs
pngsuite => Test images
visupng => Contains a MSVC workspace for VisualPng
- projects => Contains project files and workspaces for building DLL
- beos => Contains a Beos workspace for building libpng
- borland => Contains a Borland workspace for building libpng
- and zlib
- msvc => Contains a Microsoft Visual C++ (MSVC) workspace
- for building libpng and zlib
- netware.txt => Contains instructions for downloading a set of
- project files for building libpng and zlib on
- Netware.
- wince.txt => Contains instructions for downloading a Microsoft
- Visual C++ (Windows CD Toolkit) workspace for
- building libpng and zlib on WindowsCE
+ projects => Contains project files and workspaces for
+ building a DLL
+ c5builder => Contains a Borland workspace for building
+ libpng and zlib
+ visualc6 => Contains a Microsoft Visual C++ (MSVC)
+ workspace for building libpng and zlib
scripts => Directory containing scripts for building libpng:
descrip.mms => VMS makefile for MMS or MMK
- makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
+ makefile.std => Generic UNIX makefile (cc, creates static
+ libpng.a)
+ makefile.elf => Linux/ELF makefile symbol versioning,
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.linux => Linux/ELF makefile
- (gcc, creates libpng12.so.0.1.2.5)
- makefile.gcmmx => Linux/ELF makefile (gcc, creates
- libpng12.so.0.1.2.5, uses assembler code
- tuned for Intel MMX platform)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
makefile.freebsd => FreeBSD makefile
makefile.hpgcc => HPUX makefile using gcc
makefile.hpux => HPUX (10.20 and 11.00) makefile
+ makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64 bit
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
- libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later
- makefile.macosx => MACOS X Makefile
- makefile.netbsd => NetBSD/cc makefile, PNGGCCRD, makes libpng.so.
- makefile.ne0bsd => NetBSD/cc makefile, PNGGCCRD, makes libpng0.so
+ makefile.mingw => Mingw/gcc makefile
+ makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
+ makefile.ne14bsd => NetBSD/cc makefile, makes
+ libpng14.so
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
- makefile.sggcc => Silicon Graphics (gcc, creates libpng12.so.0.1.2.5)
+ makefile.sggcc => Silicon Graphics
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
- (gcc, creates libpng12.so.0.1.2.5)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.so9 => Solaris 9 makefile
- (gcc, creates libpng12.so.0.1.2.5)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.beos => BEOS makefile for X86
makefile.bor => Borland makefile (uses bcc)
makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
- makefile.bd32 => To make a png32bd.dll with Borland C++ 4.5
makefile.tc3 => Turbo C 3.0 makefile
makefile.dj2 => DJGPP 2 makefile
makefile.msc => Microsoft C makefile
- makefile.vcawin32 => makefile for Microsoft Visual C++ 5.0 and
- later (uses assembler code tuned for Intel MMX
- platform)
makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and
later (does not use assembler code)
makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
- pngos2.def => OS/2 module definition file used by makefile.os2
+ png32ce.def => module definition for makefile.cegccg
+ pngos2.def => OS/2 module definition file used by
+ makefile.os2
+ pngwin.def => module definition file used by
+ makefile.cygwin and makefile.mingw
makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
makevms.com => VMS build script
- pngdef.pas => Defines for a png32bd.dll with Borland C++ 4.5
SCOPTIONS.ppc => Used with smakefile.ppc
- mangle => Directory containing scripts to build libpng12m.so:
- mangle.in => Function-decoration macros added to png.h by the
- makefiles.
- makefile.linux => Linux/ELF makefile
- (gcc, creates libpng12m.so.0.1.2.5)
- makefile.gcmmx => Linux/ELF makefile (gcc, creates
- libpng12.so.0m.1.2.5, uses assembler code
- tuned for Intel MMX platform)
- makefile.sgi => Silicon Graphics (cc, creates libpng12m.so)
- makefile.sggcc => Silicon Graphics (gcc, creates libpng12m.so)
Good luck, and happy coding.
--Glenn Randers-Pehrson
- Internet: randeg@alum.rpi.edu
+-Glenn Randers-Pehrson (current maintainer, since 1998)
+ Internet: glennrp at users.sourceforge.net
--Andreas Eric Dilger
- Internet: adilger@enel.ucalgary.ca
+-Andreas Eric Dilger (former maintainer, 1996-1997)
+ Internet: adilger at enel.ucalgary.ca
Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
--Guy Eric Schalnat
+-Guy Eric Schalnat (original author and former maintainer, 1995-1996)
(formerly of Group 42, Inc)
- Internet: gschal@infinet.com
+ Internet: gschal at infinet.com
projects / wxWidgets.git / blobdiff