-README for libpng version 1.2.20 - September 8, 2007 (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-implement mailing list
-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
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.
-Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-(subscription required; visit
+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 (png-list at ccrc.wustl.edu, subscription required, write to
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
- c5builder => Contains a Borland workspace for building libpng
- and zlib
- 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
- 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 libpng12.so.0.1.2.20)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.linux => Linux/ELF makefile
- (gcc, creates libpng12.so.0.1.2.20)
- makefile.gcmmx => Linux/ELF makefile
- (gcc, creates libpng12.so.0.1.2.20,
- 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.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.netbsd => NetBSD/cc makefile, PNGGCCRD, makes libpng.so.
- makefile.ne12bsd => NetBSD/cc makefile, PNGGCCRD, makes libpng12.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.0.1.2.20)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
- (gcc, creates libpng12.so.0.1.2.20)
+ (gcc, creates libpng14.so.14.1.4.4)
makefile.so9 => Solaris 9 makefile
- (gcc, creates libpng12.so.0.1.2.20)
+ (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.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
SCOPTIONS.ppc => Used with smakefile.ppc
Good luck, and happy coding.
--Glenn Randers-Pehrson (current maintainer)
+-Glenn Randers-Pehrson (current maintainer, since 1998)
Internet: glennrp at users.sourceforge.net
-Andreas Eric Dilger (former maintainer, 1996-1997)