| 1 | |
| 2 | Installing libpng version 1.2.20 - September 8, 2007 |
| 3 | |
| 4 | On Unix/Linux and similar systems, you can simply type |
| 5 | |
| 6 | ./configure [--prefix=/path] |
| 7 | make check |
| 8 | make install |
| 9 | |
| 10 | and ignore the rest of this document. |
| 11 | |
| 12 | If configure does not work on your system and you have a reasonably |
| 13 | up-to-date set of tools, running ./autogen.sh before running ./configure |
| 14 | may fix the problem. You can also run the individual commands in |
| 15 | autogen.sh with the --force option, if supported by your version of |
| 16 | the tools. If you run 'libtoolize --force', though, this will replace |
| 17 | the distributed, patched, version of ltmain.sh with an unpatched version |
| 18 | and your shared library builds may fail to produce libraries with the |
| 19 | correct version numbers. |
| 20 | |
| 21 | Instead, 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 | |
| 28 | Or you can use one of the "projects" in the "projects" directory. |
| 29 | |
| 30 | If you want to use "cmake" (see www.cmake.org), copy CMakeLists.txt |
| 31 | from the "scripts" directory to this directory and type |
| 32 | |
| 33 | cmake . [-DPNG_MMX=YES] -DCMAKE_INSTALL_PREFIX=/path |
| 34 | make |
| 35 | make install |
| 36 | |
| 37 | Before installing libpng, you must first install zlib, if it |
| 38 | is not already on your system. zlib can usually be found |
| 39 | wherever you got libpng. zlib can be placed in another directory, |
| 40 | at the same level as libpng. |
| 41 | |
| 42 | If your system already has a preinstalled zlib you will still need |
| 43 | to have access to the zlib.h and zconf.h include files that |
| 44 | correspond to the version of zlib that's installed. |
| 45 | |
| 46 | You can rename the directories that you downloaded (they |
| 47 | might be called "libpng-1.2.20" or "lpng109" and "zlib-1.2.1" |
| 48 | or "zlib121") so that you have directories called "zlib" and "libpng". |
| 49 | |
| 50 | Your 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 | |
| 80 | If the line endings in the files look funny, you may wish to get the other |
| 81 | distribution of libpng. It is available in both tar.gz (UNIX style line |
| 82 | endings) and zip (DOS style line endings) formats. |
| 83 | |
| 84 | If you are building libpng with MSVC, you can enter the |
| 85 | libpng projects\visualc6 directory and follow the instructions in |
| 86 | projects\visualc6\README.txt. |
| 87 | |
| 88 | You can build libpng for WindowsCE by downloading and installing |
| 89 | the projects\wince directory as instructed in the projects\wince.txt file, and |
| 90 | then following the instructions in the README* files. Similarly, you can |
| 91 | build libpng for Netware or Beos as instructed in projects\netware.txt |
| 92 | or projects\beos. |
| 93 | |
| 94 | Else enter the zlib directory and follow the instructions in zlib/README, |
| 95 | then come back here and run "configure" or choose the appropriate |
| 96 | makefile.sys in the scripts directory. |
| 97 | |
| 98 | The files that are presently available in the scripts directory |
| 99 | include |
| 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.0.1.2.20) |
| 105 | makefile.linux => Linux/ELF makefile |
| 106 | (gcc, creates libpng12.so.0.1.2.20) |
| 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.0.1.2.20) |
| 129 | makefile.sunos => Sun makefile |
| 130 | makefile.solaris => Solaris 2.X makefile (gcc, |
| 131 | creates libpng12.so.0.1.2.20) |
| 132 | makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc, |
| 133 | creates libpng12.so.0.1.2.20) |
| 134 | makefile.so9 => Solaris 9 makefile (gcc, |
| 135 | creates libpng12.so.0.1.2.20) |
| 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 | |
| 159 | Copy the file (or files) that you need from the |
| 160 | scripts directory into this directory, for example |
| 161 | |
| 162 | MSDOS example: copy scripts\makefile.msc makefile |
| 163 | UNIX example: cp scripts/makefile.std makefile |
| 164 | |
| 165 | Read the makefile to see if you need to change any source or |
| 166 | target directories to match your preferences. |
| 167 | |
| 168 | Then read pngconf.h to see if you want to make any configuration |
| 169 | changes. |
| 170 | |
| 171 | Then just run "make" which will create the libpng library in |
| 172 | this directory and "make test" which will run a quick test that reads |
| 173 | the "pngtest.png" file and writes a "pngout.png" file that should be |
| 174 | identical to it. Look for "9782 zero samples" in the output of the |
| 175 | test. For more confidence, you can run another test by typing |
| 176 | "pngtest pngnow.png" and looking for "289 zero samples" in the output. |
| 177 | Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare |
| 178 | your output with the result shown in contrib/pngsuite/README. |
| 179 | |
| 180 | Most of the makefiles will allow you to run "make install" to |
| 181 | put the library in its final resting place (if you want to |
| 182 | do that, run "make install" in the zlib directory first if necessary). |
| 183 | Some also allow you to run "make test-installed" after you have |
| 184 | run "make install". |
| 185 | |
| 186 | If you encounter a compiler error message complaining about the |
| 187 | lines |
| 188 | __png.h__ already includes setjmp.h; |
| 189 | __dont__ include it again.; |
| 190 | This means you have compiled another module that includes setjmp.h, |
| 191 | which is hazardous because the two modules might not include exactly |
| 192 | the same setjmp.h. If you are sure that you know what you are doing |
| 193 | and that they are exactly the same, then you can comment out or |
| 194 | delete the two lines. Better yet, use the cexcept interface |
| 195 | instead, as demonstrated in contrib/visupng of the libpng distribution. |
| 196 | |
| 197 | Further information can be found in the README and libpng.txt |
| 198 | files, in the individual makefiles, in png.h, and the manual pages |
| 199 | libpng.3 and png.5. |