src/png/INSTALL


Installing libpng version 1.2.6 - August 15, 2004

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-1.2.6" or "lpng109" and "zlib-1.1.3"
or "zlib113") 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
          contrib
             gregbook
             msvctest
             pngminus
             pngsuite
             visupng
          projects
             beos
             borland
             msvc
             netware.txt
             wince.txt
          scripts
             makefile.*
          pngtest.png
          etc.
      zlib
          README
          *.h
          *.c
          contrib
          etc.

If the line endings in the files look funny, you may wish to get the other
distribution of libpng.  It is available in both tar.gz (UNIX style line
endings) and zip (DOS style line endings) formats.

If you are building libpng with MSVC, you can enter the libpng\msvc directory
and follow the instructions in msvc\README.txt.

You can build libpng for WindowsCE by entering the downloading and installing
the libpng\wince directory as instructed in the projects\wince.txt file, and
then following the instructions in the README* files.  Similarly, you can
build libpng for Netware as instructed in projects\netware.txt.

Else 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

 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
 makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6)
 makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6,
                       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
                       ftp://ftp.cs.wisc.edu/ghost)
 makefile.aix      =>  AIX/gcc makefile
 makefile.cygwin   =>  Cygwin/gcc makefile
 makefile.darwin   =>  Darwin makefile, can use on MacosX
 makefile.dec      =>  DEC Alpha UNIX makefile
 makefile.hpgcc    =>  FreeBSD makefile
 makefile.hpgcc    =>  HPUX makefile using gcc
 makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
 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 for IBM VisualAge/C++ version 4.0 or later
 makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
 makefile.ne0bsd  =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng0.so
 makefile.openbsd  =>  OpenBSD makefile
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
 makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng12.so.0.1.2.6)
 makefile.sunos    =>  Sun makefile
 makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.6)
 makefile.so9      =>  Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.6)
 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.mips     =>  MIPS makefile
 makefile.acorn    =>  Acorn makefile
 makefile.amiga    =>  Amiga makefile
 smakefile.ppc     =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
                       (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
 makefile.atari    =>  Atari makefile
 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
 makefile.watcom   =>  Watcom 10a+ Makefile, 32-bit flat memory model
 makevms.com       =>  VMS build script
 descrip.mms       =>  VMS makefile for MMS or MMK
 pngdef.pas        =>  Defines for a png32bd.dll with Borland C++ 4.5
 SCOPTIONS.ppc     =>  Used with smakefile.ppc

Copy the file (or files) that you need from the
scripts directory into this directory, for example

   MSDOS example: copy scripts\makefile.msc 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.
Look for "9782 zero samples" in the output of the test.  For more
confidence, you can run another test by typing "pngtest pngnow.png"
and looking for "289 zero samples" in the output.  Also, you can
run "pngtest -m *.png" in the "contrib/pngsuite" directory and compare
your output with the result shown in contrib/pngsuite/README.

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).
Some also allow you to run "make test-installed" after you have
run "make install".

If you encounter a compiler error message complaining about the
lines
      __png.h__ already includes setjmp.h;
      __dont__ include it again.;
This means you have compiled another module that includes setjmp.h,
which is hazardous because the two modules might not include exactly
the same setjmp.h.  If you are sure that you know what you are doing
and that they are exactly the same, then you can comment out or
delete the two lines.  Better yet, use the cexcept interface
instead, as demonstrated in contrib/visupng of the libpng distribution.

Further information can be found in the README and libpng.txt
files, in the individual makefiles, in png.h, and the manual pages
libpng.3 and png.5.
Commit	Line	Data
	1
	2	Installing libpng version 1.2.6 - August 15, 2004
	3
	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.
	11
	12	You can rename the directories that you downloaded (they
	13	might be called "libpng-1.2.6" or "lpng109" and "zlib-1.1.3"
	14	or "zlib113") so that you have directories called "zlib" and "libpng".
	15
	16	Your directory structure should look like this:
	17
	18	.. (the parent directory)
	19	libpng (this directory)
	20	INSTALL (this file)
	21	README
	22	*.h
	23	*.c
	24	contrib
	25	gregbook
	26	msvctest
	27	pngminus
	28	pngsuite
	29	visupng
	30	projects
	31	beos
	32	borland
	33	msvc
	34	netware.txt
	35	wince.txt
	36	scripts
	37	makefile.*
	38	pngtest.png
	39	etc.
	40	zlib
	41	README
	42	*.h
	43	*.c
	44	contrib
	45	etc.
	46
	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.
	50
	51	If you are building libpng with MSVC, you can enter the libpng\msvc directory
	52	and follow the instructions in msvc\README.txt.
	53
	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.
	58
	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
	61	directory.
	62
	63	The files that are presently available in the scripts directory
	64	include
	65
	66	makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
	67	makefile.linux => Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6)
	68	makefile.gcmmx => Linux/ELF makefile (gcc, creates libpng12.so.0.1.2.6,
	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/gcc makefile
	75	makefile.cygwin => Cygwin/gcc makefile
	76	makefile.darwin => Darwin makefile, can use on MacosX
	77	makefile.dec => DEC Alpha UNIX makefile
	78	makefile.hpgcc => FreeBSD makefile
	79	makefile.hpgcc => HPUX makefile using gcc
	80	makefile.hpux => HPUX (10.20 and 11.00) makefile
	81	makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
	82	makefile.intel => Intel C/C++ version 4.0 and later
	83	libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later
	84	makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
	85	makefile.ne0bsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng0.so
	86	makefile.openbsd => OpenBSD makefile
	87	makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
	88	makefile.sggcc => Silicon Graphics (gcc, creates libpng12.so.0.1.2.6)
	89	makefile.sunos => Sun makefile
	90	makefile.solaris => Solaris 2.X makefile (gcc, creates libpng12.so.0.1.2.6)
	91	makefile.so9 => Solaris 9 makefile (gcc, creates libpng12.so.0.1.2.6)
	92	makefile.32sunu => Sun Ultra 32-bit makefile
	93	makefile.64sunu => Sun Ultra 64-bit makefile
	94	makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
	95	makefile.mips => MIPS makefile
	96	makefile.acorn => Acorn makefile
	97	makefile.amiga => Amiga makefile
	98	smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
	99	(Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
	100	makefile.atari => Atari makefile
	101	makefile.beos => BEOS makefile for X86
	102	makefile.bor => Borland makefile (uses bcc)
	103	makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
	104	makefile.bd32 => To make a png32bd.dll with Borland C++ 4.5
	105	makefile.tc3 => Turbo C 3.0 makefile
	106	makefile.dj2 => DJGPP 2 makefile
	107	makefile.msc => Microsoft C makefile
	108	makefile.vcawin32 => makefile for Microsoft Visual C++ 5.0 and later (uses
	109	assembler code tuned for Intel MMX platform)
	110	makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later (does
	111	not use assembler code)
	112	makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
	113	pngos2.def => OS/2 module definition file used by makefile.os2
	114	makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
	115	makevms.com => VMS build script
	116	descrip.mms => VMS makefile for MMS or MMK
	117	pngdef.pas => Defines for a png32bd.dll with Borland C++ 4.5
	118	SCOPTIONS.ppc => Used with smakefile.ppc
	119
	120	Copy the file (or files) that you need from the
	121	scripts directory into this directory, for example
	122
	123	MSDOS example: copy scripts\makefile.msc makefile
	124	UNIX example: cp scripts/makefile.std makefile
	125
	126	Read the makefile to see if you need to change any source or
	127	target directories to match your preferences.
	128
	129	Then read pngconf.h to see if you want to make any configuration
	130	changes.
	131
	132	Then just run "make test" which will create the libpng library in
	133	this directory and run a quick test that reads the "pngtest.png"
	134	file and writes a "pngout.png" file that should be identical to it.
	135	Look for "9782 zero samples" in the output of the test. For more
	136	confidence, you can run another test by typing "pngtest pngnow.png"
	137	and looking for "289 zero samples" in the output. Also, you can
	138	run "pngtest -m *.png" in the "contrib/pngsuite" directory and compare
	139	your output with the result shown in contrib/pngsuite/README.
	140
	141	Most of the makefiles will allow you to run "make install" to
	142	put the library in its final resting place (if you want to
	143	do that, run "make install" in the zlib directory first if necessary).
	144	Some also allow you to run "make test-installed" after you have
	145	run "make install".
	146
	147	If you encounter a compiler error message complaining about the
	148	lines
	149	__png.h__ already includes setjmp.h;
	150	__dont__ include it again.;
	151	This means you have compiled another module that includes setjmp.h,
	152	which is hazardous because the two modules might not include exactly
	153	the same setjmp.h. If you are sure that you know what you are doing
	154	and that they are exactly the same, then you can comment out or
	155	delete the two lines. Better yet, use the cexcept interface
	156	instead, as demonstrated in contrib/visupng of the libpng distribution.
	157
	158	Further information can be found in the README and libpng.txt
	159	files, in the individual makefiles, in png.h, and the manual pages
	160	libpng.3 and png.5.