fff5f7d5d8
Add pngprefix.h file generated by libpng configure/make process (which we
don't run during wxWidgets build, so this is something that will need to be
redone manually whenever libpng is upgraded, the procedure for doing this is
documented in docs/tech/tn0025.txt) in order to use "wx_" prefix for all
libpng public symbols. This should avoid at least some problems due to the
conflicts between the built-in libpng and shared libpng loaded into the
process as GTK+ libraries dependency under Unix.
Also rename wx_png_{warning,error} to use upper case PNG for consistency with
wx_PNG_stream_{reader,writer} and to avoid conflict with png_{warning,error}()
which we now rename to have "wx_" prefix.
Closes #14157.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74451 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
171 lines
6.0 KiB
Plaintext
171 lines
6.0 KiB
Plaintext
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Installing libpng
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On Unix/Linux and similar systems, you can simply type
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./configure [--prefix=/path]
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make check
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make install
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and ignore the rest of this document.
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If configure does not work on your system, or if you have a need to
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change configure.ac or Makefile.am, and you have a reasonably
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up-to-date set of tools, running ./autogen.sh in a git clone before
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running ./configure may fix the problem. To be really sure that you
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aren't using any of the included pre-built scripts, you can do this:
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./configure --enable-maintainer-mode
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make maintainer-clean
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./autogen.sh --maintainer --clean
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./autogen.sh --maintainer
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./configure [--prefix=/path] [other options]
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make
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make install
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make check
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Instead, you can use one of the custom-built makefiles in the
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"scripts" directory
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cp scripts/makefile.system makefile
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make test
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make install
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The files that are presently available in the scripts directory
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are listed and described in scripts/README.txt.
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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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If you wish to test with a particular zlib that is not first in the
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standard library search path, put ZLIBLIB, ZLIBINC, CPPFLAGS, LDFLAGS,
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and LD_LIBRARY_PATH in your environment before running "make test"
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or "make distcheck":
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ZLIBLIB=/path/to/lib export ZLIBLIB
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ZLIBINC=/path/to/include export ZLIBINC
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CPPFLAGS="-I$ZLIBINC" export CPPFLAGS
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LDFLAGS="-L$ZLIBLIB" export LDFLAGS
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LD_LIBRARY_PATH="$ZLIBLIB:$LD_LIBRARY_PATH" export LD_LIBRARY_PATH
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If you are using one of the makefile scripts, put ZLIBLIB and ZLIBINC
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in your environment and type "make ZLIBLIB=$ZLIBLIB ZLIBINC=$ZLIBINC test".
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If you want to use "cmake" (see www.cmake.org), type
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cmake . -DCMAKE_INSTALL_PREFIX=/path
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make
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make install
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You can rename the directories that you downloaded (they
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might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.7"
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or "zlib127") so that you have directories called "zlib" and "libpng".
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Your directory structure should look like this:
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.. (the parent directory)
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libpng (this directory)
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INSTALL (this file)
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README
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*.h
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*.c
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CMakeLists.txt => "cmake" script
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configuration files:
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configure.ac, configure, Makefile.am, Makefile.in,
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autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in,
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libpng-config.in, aclocal.m4, config.h.in, config.sub,
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depcomp, install-sh, mkinstalldirs, test-pngtest.sh
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contrib
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gregbook
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libtests
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pngminim
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pngminus
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pngsuite
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visupng
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projects
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visualc71
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vstudio
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scripts
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makefile.*
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*.def (module definition files)
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etc.
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pngtest.png
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etc.
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zlib
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README
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*.h
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*.c
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contrib
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etc.
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If the line endings in the files look funny, you may wish to get the other
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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 or visualc71 directory and follow the instructions
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in README.txt.
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Otherwise enter the zlib directory and follow the instructions in zlib/README,
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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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Copy the file (or files) that you need from the
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scripts directory into this directory, for example
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MSDOS example: copy scripts\makefile.msc makefile
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UNIX example: cp scripts/makefile.std makefile
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Read the makefile to see if you need to change any source or
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target directories to match your preferences.
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Then read pnglibconf.dfa to see if you want to make any configuration
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changes.
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Then just run "make" which will create the libpng library in
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this directory and "make test" which will run a quick test that reads
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the "pngtest.png" file and writes a "pngout.png" file that should be
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identical to it. Look for "9782 zero samples" in the output of the
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test. For more confidence, you can run another test by typing
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"pngtest pngnow.png" and looking for "289 zero samples" in the output.
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Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare
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your output with the result shown in contrib/pngsuite/README.
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Most of the makefiles will allow you to run "make install" to
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put the library in its final resting place (if you want to
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do that, run "make install" in the zlib directory first if necessary).
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Some also allow you to run "make test-installed" after you have
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run "make install".
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Further information can be found in the README and libpng-manual.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 might need to add to configure
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explicitly, 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 -O -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/libpng%NN%, or whatever.
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If you find that the configure script is out-of-date or is not supporting
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your platform properly, try running autogen.sh to regenerate "configure",
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"Makefile.in", and the other configuration files. Then try configure again.
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