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# README - Fast Light Tool Kit (FLTK) Version 1.4.0
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## WHAT IS FLTK?
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The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
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a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11),
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Microsoft(r) Windows(r), and MacOS(r) X. FLTK provides
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modern GUI functionality without the bloat and supports 3D
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graphics via OpenGL(r) and its built-in GLUT emulation. It
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was originally developed by Mr. Bill Spitzak and is
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currently maintained by a small group of developers across
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the world with a central repository in the US.
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## LICENSING
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FLTK comes with complete free source code. FLTK is available
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under the terms of the GNU Library General Public License.
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Contrary to popular belief, it can be used in commercial
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software! (Even Bill Gates could use it.)
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## ON-LINE DOCUMENTATION
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All of the documentation is in HTML in the subdirectory
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"documentation". The "index.html" file should be your
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starting point. PostScript(tm) and PDF versions of this
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documentation is also available from the FLTK web site at:
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http://www.fltk.org/documentation.php
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## BUILDING AND INSTALLING FLTK UNDER UNIX AND Mac OS X
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In most cases you can just type "make". This will run
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configure with the default (no) options and then compile
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everything.
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FLTK uses GNU autoconf to configure itself for your UNIX
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platform. The main things that the configure script will
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look for are the X11, OpenGL (or Mesa), and JPEG header and
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library files. Make sure that they are in the standard
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include/library locations. If they aren't you need to
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define the CFLAGS, CXXFLAGS, and LDFLAGS environment
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variables.
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If you aren't using "gcc", "g++", "c++", or "CC" for your
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C++ compiler, you'll also need to set the CXX environment
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variable. Similarly, if you aren't using "gcc" or "cc" for
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your C compiler you'll need to set the CC environment
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variable.
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You can run configure yourself to get the exact setup you
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need. Type "./configure <options>". Options include:
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--enable-cygwin - Enable the Cygwin libraries (Windows)
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--enable-debug - Enable debugging code & symbols
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--disable-gl - Disable OpenGL support
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--enable-shared - Enable generation of shared libraries
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--enable-threads - Enable multithreading support
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--enable-xdbe - Enable the X double-buffer extension
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--enable-xft - Enable the Xft library (anti-aliased fonts)
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--bindir=/path - Set the location for executables
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[default = /usr/local/bin]
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--libdir=/path - Set the location for libraries
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[default = /usr/local/lib]
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--includedir=/path - Set the location for include files.
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[default = /usr/local/include]
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--prefix=/dir - Set the directory prefix for files
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[default = /usr/local]
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When the configure script is done you can just run the
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"make" command. This will build the library, FLUID tool, and
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all of the test programs.
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To install the library, become root and type "make
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install". This will copy the "fluid" executable to
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"bindir", the header files to "includedir", and the library
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files to "libdir".
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To install additional files and icons to be used by the main
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desktop environments such as KDE, GNOME and XFCE, you will also
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need to run "make install-desktop" as root.
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## SVN USERS
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If you've just checked out a fresh copy of FLTK from SVN,
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you'll need to generate an initial version of 'configure'
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by running 'make makeinclude'. (We don't include a copy
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of configure in svn)
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## MAKE TARGETS
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make -- builds the library + test programs (does not install)
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make install -- builds and installs
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make clean -- clean for a rebuild
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make distclean -- like 'clean', but also removes docs, configure, fltk-config
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( cd src; make ) -- builds just the fltk libraries
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## BUILDING FLTK UNDER MICROSOFT WINDOWS
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There are two ways to build FLTK under Microsoft Windows.
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The first is to use the Visual C++ project files under the
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"ide/" directory. See the file ide/README.IDE for more info.
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The second method is to use a GNU-based development tool.
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To build with the Cygwin or MinGW tools, use the supplied
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configure script as specified in the UNIX section above:
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sh configure ...options...
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## BUILDING HTML DOCUMENTATION
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If you want to build the HTML documentation:
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( cd documentation && make html )
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If you want to build the PDF documentation:
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( cd documentation && make pdf )
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FLTK uses doxygen for documentation, so you'll at least need doxygen
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installed for creating html docs, and LaTeX for creating PDF docs.
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## INTERNET RESOURCES
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FLTK is available on the 'net in a bunch of locations:
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- WWW: http://www.fltk.org/
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http://www.fltk.org/str.php [for reporting bugs]
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http://www.fltk.org/software.php [source code]
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To join the FLTK mailing list, go the following web page:
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http://www.fltk.org/newsgroups.php
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## REPORTING BUGS
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To report a bug in FLTK, use the form at:
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http://www.fltk.org/str.php
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For general support and questions, please use the FLTK
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mailing list at "fltk@fltk.org".
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## TRADEMARKS
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Microsoft and Windows are registered trademarks of Microsoft
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Corporation. UNIX is a registered trademark of the X/Open
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Group, Inc. OpenGL is a registered trademark of Silicon
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Graphics, Inc. Mac OS is a registered trademark of Apple
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Computers, Inc.
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## COPYRIGHT
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FLTK is copyright 1998-2016 by Bill Spitzak and others,
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see the CREDITS file for more info.
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This library is free software. Distribution and use rights are
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outlined in the file "COPYING" which should have been included with
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this file. If this file is missing or damaged, see the license at:
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http://www.fltk.org/COPYING.php
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