-README for libpng version 1.2.6 - August 15, 2004 (shared library 12.0)
+README for libpng version 1.2.34 - December 18, 2008 (shared library 12.0)
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.lzma, or libpng-*.tar.bz2 if you want UNIX-style line
+endings in the text files, or lpng*.7z or lpng*.zip if you want DOS-style
+line endings. You can get UNIX-style line endings from the *.zip file
+by using "unzip -a" but there seems to be no simple way to recover
+UNIX-style line endings from the *.7z file. The *.tar.lzma file is
+recommended for *NIX users instead.
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>
+on the png-mng-implement mailing list
and not on material submitted privately to Guy, Andreas, or Glenn. They will
forward any good suggestions to the list.
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.simplesystems.org/pub/png/src/
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/pngdocs.html
-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.
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.
-glennrp@users.sourceforge.net
-png-implement@ccrc.wustl.edu
+Send comments/corrections/commendations to png-mng-implement at lists.sf.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.
+addressed to the png-mng-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-mng-misc at lists.sourceforge.net, subscription required, visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement to subscribe)
+On the other hand,
+please do not send libpng questions to that address, send them to me
+or to the png-mng-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 twelve 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:
TODO => Things not implemented in the current library
Y2KINFO => Statement of Y2K compliance
example.c => Example code for using libpng functions
+ libpng-*-*-diff.txt => Diff from previous release
libpng.3 => manual page for libpng (includes libpng.txt)
libpng.txt => Description of libpng and its functions
libpngpf.3 => manual page for libpng's private functions
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
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
+ c5builder => Contains a Borland workspace for building libpng
and zlib
- msvc => Contains a Microsoft Visual C++ (MSVC) workspace
+ visualc6 => 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
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.elf => Linux/ELF makefile symbol versioning,
+ gcc, creates libpng12.so.0.1.2.34)
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 libpng12.so.0.1.2.34)
+ makefile.gcmmx => Linux/ELF makefile
+ (gcc, creates libpng12.so.0.1.2.34,
+ uses assembler code tuned for Intel MMX platform)
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.ne12bsd => NetBSD/cc makefile, PNGGCCRD, makes libpng12.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 libpng12.so.0.1.2.34)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
- (gcc, creates libpng12.so.0.1.2.5)
+ (gcc, creates libpng12.so.0.1.2.34)
makefile.so9 => Solaris 9 makefile
- (gcc, creates libpng12.so.0.1.2.5)
+ (gcc, creates libpng12.so.0.1.2.34)
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
+ 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
pngos2.def => OS/2 module definition file used by makefile.os2
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)
+ Internet: glennrp at users.sourceforge.net
--Andreas Eric Dilger
- Internet: adilger@enel.ucalgary.ca
- Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
+-Andreas Eric Dilger (former maintainer, 1996-1997)
+ Internet: adilger at enel.ucalgary.ca
+ Web: http://members.shaw.ca/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