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Installing libpng version 1.2.8 - December 3, 2004
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Before installing libpng, you must first install zlib. zlib
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can usually be found wherever you got libpng. zlib can be
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placed in another directory, at the same level as libpng.
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Note that your system might already have a preinstalled
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zlib, but you will still need to have access to the
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zlib.h and zconf.h include files that correspond to the
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version of zlib that's installed.
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Installing libpng version 1.2.13 - November 14, 2006
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On Unix/Linux and similar systems, you can simply type
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./configure [--prefix=$HOME]
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and ignore the rest of this document.
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If configure does not work on your system and you have a reasonably
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up-to-date set of tools, running ./autogen.sh before running ./configure
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may fix the problem. You can also run the individual commands in
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autogen.sh with the --force option, if supported by your version of
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the tools. If you run 'libtoolize --force', though, this will replace
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the distributed, patched, version of ltmain.sh with an unpatched version
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and your shared library builds may fail to produce libraries with the
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correct version numbers.
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Instead, you can use one of the custom-built makefiles in the
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cp scripts/makefile.system makefile
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Or you can use one of the "projects" in the "projects" directory.
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Before installing libpng, you must first install zlib, if it
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is not already on your system. zlib can usually be found
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wherever you got libpng. zlib can be placed in another directory,
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at the same level as libpng.
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If your system already has a preinstalled zlib you will still need
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to have access to the zlib.h and zconf.h include files that
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correspond to the version of zlib that's installed.
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You can rename the directories that you downloaded (they
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might be called "libpng-1.2.8" or "lpng109" and "zlib-1.2.1"
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might be called "libpng-1.2.13" or "lpng109" and "zlib-1.2.1"
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or "zlib121") so that you have directories called "zlib" and "libpng".
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Your directory structure should look like this:
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distribution of libpng. It is available in both tar.gz (UNIX style line
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endings) and zip (DOS style line endings) formats.
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If you are building libpng with MSVC, you can enter the
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libpng projects\visualc6 directory and follow the instructions in
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projects\visualc6\README.txt.
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Else enter the zlib directory and follow the instructions in zlib/README,
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then come back here and choose the appropriate makefile.sys in the scripts
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then come back here and run "configure" or choose the appropriate
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makefile.sys in the scripts directory.
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The files that are presently available in the scripts directory
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makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
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makefile.elf => Linux/ELF makefile symbol versioning,
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gcc, creates libpng12.so.0.1.2.8)
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gcc, creates libpng12.so.0.1.2.13)
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makefile.linux => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.8)
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(gcc, creates libpng12.so.0.1.2.13)
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makefile.gcmmx => Linux/ELF makefile
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(gcc, creates libpng12.so.0.1.2.8,
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(gcc, creates libpng12.so.0.1.2.13,
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uses assembler code tuned for Intel MMX platform)
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makefile.gcc => Generic makefile (gcc, creates static libpng.a)
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makefile.knr => Archaic UNIX Makefile that converts files with
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makefile.openbsd => OpenBSD makefile
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makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
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makefile.sggcc => Silicon Graphics (gcc,
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creates libpng12.so.0.1.2.8)
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creates libpng12.so.0.1.2.13)
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makefile.sunos => Sun makefile
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makefile.solaris => Solaris 2.X makefile (gcc,
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creates libpng12.so.0.1.2.8)
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creates libpng12.so.0.1.2.13)
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makefile.so9 => Solaris 9 makefile (gcc,
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creates libpng12.so.0.1.2.8)
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creates libpng12.so.0.1.2.13)
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makefile.32sunu => Sun Ultra 32-bit makefile
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makefile.64sunu => Sun Ultra 64-bit makefile
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makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
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Further information can be found in the README and libpng.txt
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files, in the individual makefiles, in png.h, and the manual pages
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libpng.3 and png.5.
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Using the ./configure script -- 16 December 2002.
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=================================================
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The ./configure script should work compatibly with what scripts/makefile.*
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did, however there are some options you need to add to configure explicitly,
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which previously was done semi-automatically (if you didn't edit
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scripts/makefile.* yourself, that is)
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CFLAGS="-Wall -O3 -funroll-loops \
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-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
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--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
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You can alternatively specify --includedir=/usr/include, /usr/local/include,
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/usr/include/png12, or whatever.
added
removed
INSTALL
