1 2Installing libpng version 1.2.38 - July 16, 2009 3 4On Unix/Linux and similar systems, you can simply type 5 6 ./configure [--prefix=/path] 7 make check 8 make install 9 10and ignore the rest of this document. 11 12If configure does not work on your system and you have a reasonably 13up-to-date set of tools, running ./autogen.sh before running ./configure 14may fix the problem. You can also run the individual commands in 15autogen.sh with the --force option, if supported by your version of 16the tools. If you run 'libtoolize --force', though, this will replace 17the distributed, patched, version of ltmain.sh with an unpatched version 18and your shared library builds may fail to produce libraries with the 19correct version numbers. 20 21Instead, you can use one of the custom-built makefiles in the 22"scripts" directory 23 24 cp scripts/makefile.system makefile 25 make test 26 make install 27 28Or you can use one of the "projects" in the "projects" directory. 29 30If you want to use "cmake" (see www.cmake.org), copy CMakeLists.txt 31from the "scripts" directory to this directory and type 32 33 cmake . [-DPNG_MMX=YES] -DCMAKE_INSTALL_PREFIX=/path 34 make 35 make install 36 37Before installing libpng, you must first install zlib, if it 38is not already on your system. zlib can usually be found 39wherever you got libpng. zlib can be placed in another directory, 40at the same level as libpng. 41 42If your system already has a preinstalled zlib you will still need 43to have access to the zlib.h and zconf.h include files that 44correspond to the version of zlib that's installed. 45 46You can rename the directories that you downloaded (they 47might be called "libpng-1.2.38" or "lpng109" and "zlib-1.2.1" 48or "zlib121") so that you have directories called "zlib" and "libpng". 49 50Your directory structure should look like this: 51 52 .. (the parent directory) 53 libpng (this directory) 54 INSTALL (this file) 55 README 56 *.h 57 *.c 58 contrib 59 gregbook 60 pngminus 61 pngsuite 62 visupng 63 projects 64 beos 65 c5builder (Borland) 66 visualc6 (msvc) 67 netware.txt 68 wince.txt 69 scripts 70 makefile.* 71 pngtest.png 72 etc. 73 zlib 74 README 75 *.h 76 *.c 77 contrib 78 etc. 79 80If the line endings in the files look funny, you may wish to get the other 81distribution of libpng. It is available in both tar.gz (UNIX style line 82endings) and zip (DOS style line endings) formats. 83 84If you are building libpng with MSVC, you can enter the 85libpng projects\visualc6 directory and follow the instructions in 86projects\visualc6\README.txt. 87 88You can build libpng for WindowsCE by downloading and installing 89the projects\wince directory as instructed in the projects\wince.txt file, and 90then following the instructions in the README* files. Similarly, you can 91build libpng for Netware or Beos as instructed in projects\netware.txt 92or projects\beos. 93 94Else enter the zlib directory and follow the instructions in zlib/README, 95then come back here and run "configure" or choose the appropriate 96makefile.sys in the scripts directory. 97 98The files that are presently available in the scripts directory 99include 100 101 CMakeLists.txt => "cmake" script 102 makefile.std => Generic UNIX makefile (cc, creates static libpng.a) 103 makefile.elf => Linux/ELF makefile symbol versioning, 104 gcc, creates libpng12.so.0.1.2.38) 105 makefile.linux => Linux/ELF makefile 106 (gcc, creates libpng12.so.0.1.2.38) 107 makefile.gcc => Generic makefile (gcc, creates static libpng.a) 108 makefile.knr => Archaic UNIX Makefile that converts files with 109 ansi2knr (Requires ansi2knr.c from 110 ftp://ftp.cs.wisc.edu/ghost) 111 makefile.aix => AIX/gcc makefile 112 makefile.cygwin => Cygwin/gcc makefile 113 makefile.darwin => Darwin makefile, can use on MacosX 114 makefile.dec => DEC Alpha UNIX makefile 115 makefile.freebsd => FreeBSD makefile 116 makefile.hpgcc => HPUX makefile using gcc 117 makefile.hpux => HPUX (10.20 and 11.00) makefile 118 makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit 119 makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static) 120 makefile.intel => Intel C/C++ version 4.0 and later 121 libpng.icc => Project file for IBM VisualAge/C++ version 4.0 or later 122 makefile.netbsd => NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so. 123 makefile.ne12bsd => NetBSD/cc makefile, uses PNGGCCRD, 124 makes libpng12.so 125 makefile.openbsd => OpenBSD makefile 126 makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) 127 makefile.sggcc => Silicon Graphics (gcc, 128 creates libpng12.so.0.1.2.38) 129 makefile.sunos => Sun makefile 130 makefile.solaris => Solaris 2.X makefile (gcc, 131 creates libpng12.so.0.1.2.38) 132 makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc, 133 creates libpng12.so.0.1.2.38) 134 makefile.so9 => Solaris 9 makefile (gcc, 135 creates libpng12.so.0.1.2.38) 136 makefile.32sunu => Sun Ultra 32-bit makefile 137 makefile.64sunu => Sun Ultra 64-bit makefile 138 makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc 139 makefile.mips => MIPS makefile 140 makefile.acorn => Acorn makefile 141 makefile.amiga => Amiga makefile 142 smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler 143 (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc) 144 makefile.atari => Atari makefile 145 makefile.beos => BEOS makefile for X86 146 makefile.bor => Borland makefile (uses bcc) 147 makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode) 148 makefile.tc3 => Turbo C 3.0 makefile 149 makefile.dj2 => DJGPP 2 makefile 150 makefile.msc => Microsoft C makefile 151 makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later 152 makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def) 153 pngos2.def => OS/2 module definition file used by makefile.os2 154 makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model 155 makevms.com => VMS build script 156 descrip.mms => VMS makefile for MMS or MMK 157 SCOPTIONS.ppc => Used with smakefile.ppc 158 159Copy the file (or files) that you need from the 160scripts directory into this directory, for example 161 162 MSDOS example: copy scripts\makefile.msc makefile 163 UNIX example: cp scripts/makefile.std makefile 164 165Read the makefile to see if you need to change any source or 166target directories to match your preferences. 167 168Then read pngconf.h to see if you want to make any configuration 169changes. 170 171Then just run "make" which will create the libpng library in 172this directory and "make test" which will run a quick test that reads 173the "pngtest.png" file and writes a "pngout.png" file that should be 174identical to it. Look for "9782 zero samples" in the output of the 175test. For more confidence, you can run another test by typing 176"pngtest pngnow.png" and looking for "289 zero samples" in the output. 177Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare 178your output with the result shown in contrib/pngsuite/README. 179 180Most of the makefiles will allow you to run "make install" to 181put the library in its final resting place (if you want to 182do that, run "make install" in the zlib directory first if necessary). 183Some also allow you to run "make test-installed" after you have 184run "make install". 185 186If you encounter a compiler error message complaining about the 187lines 188 __png.h__ already includes setjmp.h; 189 __dont__ include it again.; 190This means you have compiled another module that includes setjmp.h, 191which is hazardous because the two modules might not include exactly 192the same setjmp.h. If you are sure that you know what you are doing 193and that they are exactly the same, then you can comment out or 194delete the two lines. Better yet, use the cexcept interface 195instead, as demonstrated in contrib/visupng of the libpng distribution. 196 197Further information can be found in the README and libpng.txt 198files, in the individual makefiles, in png.h, and the manual pages 199libpng.3 and png.5. 200
