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SWIG (Simplified Wrapper and Interface Generator) Version: 2.0.3 (29 March 2011) Tagline: SWIG is a compiler that integrates C and C++ with languages including Perl, Python, Tcl, Ruby, PHP, Java, Ocaml, Lua, Scheme (Guile, MzScheme, CHICKEN), Pike, C#, Modula-3, Common Lisp (CLISP, Allegro CL, CFFI, UFFI), Octave and R. SWIG reads annotated C/C++ header files and creates wrapper code (glue code) in order to make the corresponding C/C++ libraries available to the listed languages, or to extend C/C++ programs with a scripting language. Up-to-date SWIG related information can be found at http://www.swig.org A SWIG FAQ and other hints can be found on the SWIG Wiki: http://www.dabeaz.com/cgi-bin/wiki.pl License ======= Please see the LICENSE file for details of the SWIG license. Release Notes ============= Please see the CHANGES.current file for a detailed list of bug fixes and new features for the current release. The CHANGES file contains bug fixes and new features for older versions. A summary of changes in each release can be found in the RELEASENOTES file. Backwards Compatibility ======================= The developers strive their best to preserve backwards compatibility between releases, but this is not always possible as the overriding aim is to provide the best wrapping experience. Where backwards compatibility is known to be broken, it is clearly marked as an incompatibility in the CHANGES and CHANGES.current files. See the documentation for details of the SWIG_VERSION preprocessor symbol if you have backward compatibility issues and need to use more than one version of SWIG. Windows Installation ==================== Please see the Doc/Manual/Windows.html file for instructions on installing SWIG on Windows and running the examples. The Windows distribution is called swigwin and includes a prebuilt SWIG executable, swig.exe, included in the same directory as this README file. Otherwise it is exactly the same as the main SWIG distribution. There is no need to download anything else. Unix Installation ================= You must use GNU `make' to build SWIG. http://www.gnu.org/software/make/ PCRE needs to be installed on your system to build SWIG, in particular pcre-config must be available. If you have PCRE headers and libraries but not pcre-config itself or, alternatively, wish to override the compiler or linker flags returned by pcre-config, you may set PCRE_LIBS and PCRE_CFLAGS variables to be used instead. And if you don't have PCRE at all, the configure script will provide instructions for obtaining it. To build and install SWIG, simply type the following: % ./configure % make % make install By default SWIG installs itself in /usr/local. If you need to install SWIG in a different location or in your home directory, use the --prefix option to ./configure. For example: % ./configure --prefix=/home/yourname/projects % make % make install Note: the directory given to --prefix must be an absolute pathname. Do *NOT* use the ~ shell-escape to refer to your home directory. SWIG won't work properly if you do this. The file INSTALL details more about using configure. Also try % ./configure --help. The configure script will attempt to locate various packages on your machine including Tcl, Perl5, Python and all the other target languages that SWIG uses. Don't panic if you get 'not found' messages--SWIG does not need these packages to compile or run. The configure script is actually looking for these packages so that you can try out the SWIG examples contained in the 'Examples' directory without having to hack Makefiles. Note that the --without-xxx options, where xxx is a target language, have minimal effect. All they do is reduce the amount of testing done with 'make check'. The SWIG executable and library files installed cannot currently be configured with a subset of target languages. Please see the Documentation section below on installing documentation as none is installed by default. SWIG used to include a set of runtime libraries for some languages for working with multiple modules. These are no longer built during the installation stage. However, users can build them just like any wrapper module as described in the documentation, Doc/Manual/Modules.html. The CHANGES file also lists some examples which build the runtime library. Notes: (1) If you checked the code out via SVN, you will have to run ./autogen.sh before typing 'configure'. In addition, a full build of SWIG requires the a number of packages to be installed. Full instructions at http://www.swig.org/svn.html Macintosh OS X Installation ============================ SWIG is known to work on various flavors of OS X. Follow the Unix installation instructions above. However, as of this writing, there is still great deal of inconsistency with how shared libaries are handled by various scripting languages on OS X. We've tried to resolve these differences to the extent of our knowledge. Users of OS X should be aware that Darwin handles shared libraries and linking in a radically different way than most Unix systems. In order to test SWIG and run the examples, SWIG configures itself to use flat namespaces and to allow undefined symbols (-flat_namespace -undefined suppress). This mostly closely follows the Unix model and makes it more likely that the SWIG examples will work with whatever installation of software you might have. However, this is generally not the recommended technique for building larger extension modules. Instead, you should utilize Darwin's two-level namespaces. Some details about this can be found here http://developer.apple.com/documentation/ReleaseNotes/DeveloperTools/TwoLevelNamespaces.html Needless to say, you might have to experiment a bit to get things working at first. Testing ======= If you want to test SWIG before installation, type the following: % make -k check 'make -k check' requires at least one of the target languages to be installed. If it fails, it may mean that you have an uninstalled language module or that the file 'Examples/Makefile' has been incorrectly configured. It may also fail due to compiler issues such as broken C++ compiler. Even if 'make -k check' fails, there is a pretty good chance SWIG still works correctly---you will just have to mess around with one of the examples and some makefiles to get it to work. Some tests may also fail due to missing dependency packages, eg PCRE or Boost, but this will require careful analysis of the configure output. The testing suite executed by 'make -k check' is designed to stress-test many parts of the implementation including obscure corner cases. If some of these tests fail or generate warning messages, there is no reason for alarm---the test may be related to some new SWIG feature or a difficult bug that we're trying to resolve. Chances are that SWIG will work just fine for you. Note that if you have more than one CPU/core, then you can use parallel make to speed up the check as it does take quite some time to run, for example: % make -j2 -k check Also, SWIG's support for C++ is sufficiently advanced that certain tests may fail on older C++ compilers (for instance if your compiler does not support member templates). These errors are harmless if you don't intend to use these features in your own programs. Note: The test-suite currently contains over 500 tests. If you have many different target languages installed and a slow machine, it might take more than an hour to run the test-suite. Examples ======== The Examples directory contains a variety of examples of using SWIG and it has some browsable documentation. Simply point your browser to the file "Example/index.html". The Examples directory also includes Visual C++ project (.dsp) files for building some of the examples on Windows. Known Issues ============ There are minor known bugs, details of which are in the bug tracker, see http://www.swig.org/bugs.html. Troubleshooting =============== In order to operate correctly, SWIG relies upon a set of library files. If after building SWIG, you get error messages like this, % swig foo.i :1. Unable to find 'swig.swg' :3. Unable to find 'tcl8.swg' it means that SWIG has either been incorrectly configured or installed. To fix this: 1. Make sure you remembered to do a 'make install' and that the installation actually worked. Make sure you have write permission on the install directory. 2. If that doesn't work, type 'swig -swiglib' to find out where SWIG thinks its library is located. 3. If the location is not where you expect, perhaps you supplied a bad option to configure. Use ./configure --prefix=pathname to set the SWIG install location. Also, make sure you don't include a shell escape character such as ~ when you specify the path. 4. The SWIG library can be changed by setting the SWIG_LIB environment variable. However, you really shouldn't have to do this. If you are having other troubles, you might look at the SWIG Wiki at http://www.dabeaz.com/cgi-bin/wiki.pl. Documentation ============= The Doc/Manual directory contains the most recent set of updated documentation for this release. The documentation is available in three different formats, each of which contains identical content. These format are, pdf (Doc/Manual/SWIGDocumentation.pdf), single page html (Doc/Manual/SWIGDocumentation.html) or multiple page html (other files in Doc/Manual). Please select your chosen format and copy/install to wherever takes your fancy. There is some technical developer documentation available in the Doc/Devel subdirectory. This is not necessarily up-to-date, but it has some information on SWIG internals. Participate! ============ Please report any errors and submit patches (if possible)! We only have access to a limited variety of hardware (Linux, Solaris, OS-X, and Windows). All contributions help. If you would like to join the SWIG development team or contribute a language module to the distribution, please contact the swig-devel mailing list, details at http://www.swig.org/mail.html. -- The SWIG Maintainers This file contains the changes for the current release. See the CHANGES file for changes in older releases. See the RELEASENOTES file for a summary of changes in each release. Version 2.0.3 (29 March 2011) =========================== 2011-03-29: wsfulton [R] Apply patch #3239076 from Marie White fixing strings for R >= 2.7.0 2011-03-29: wsfulton [Tcl] Apply patch #3248280 from Christian Delbaere which adds better error messages when the incorrect number or type of arguments are passed to overloaded methods. 2011-03-29: wsfulton [Tcl] Apply patch #3224663 from Christian Delbaere. 1. Fix when function returns a NULL value, a "NULL" command will be created in the Tcl interpreter and calling this command will cause a segmentation fault. 2. Previous implementation searches for class methods using a linear search causing performance issues in wrappers for classes with many member functions. The patch adds a method hash table to classes and changes method name lookup to use the hash table instead of doing a linear search. 2011-03-26: wsfulton [C#, Java] SF bug #3195112 - fix wrapping of enums that are type char, for example: enum { X = 'X'; } 2011-03-21: vadz Allow setting PCRE_CFLAGS and PCRE_LIBS during configuration to override the values returned by pcre-config, e.g. to allow using a static version of PCRE library. 2011-03-17: wsfulton [UTL] Add missing headers in generated STL wrappers to fix compilation with gcc-4.6. 2011-03-17: wsfulton Fix regression introduced in swig-2.0.2 where filenames with spaces were not found when used with %include and %import. Reported by Shane Liesegang. 2011-03-15: wsfulton [UTL] Fix overloading when using const char[], problem reported by David Maxwell. Similarly for char[ANY] and const char[ANY]. 2011-03-15: wsfulton [C#] Apply patch #3212624 fixing std::map Keys property. 2011-03-14: olly [PHP] Fix handling of overloaded methods/functions where some return void and others don't - whether this worked or not depended on the order they were encountered in (SF#3208299). 2011-03-13: klickverbot [D] Extended support for C++ namespaces (nspace feature). 2011-03-12: olly [PHP] Fix sharing of type information between multiple SWIG-wrapped modules (SF#3202463). 2011-03-09: wsfulton [Python] Fix SF #3194294 - corner case bug when 'NULL' is used as the default value for a primitive type parameter in a method declaration. 2011-03-07: olly [PHP] Don't use zend_error_noreturn() for cases where the function returns void - now this issue can only matter if you have a function or method which is directed and returns non-void. 2011-03-06: olly [PHP] Add casts to the typemaps for long long and unsigned long long to avoid issues when they are used with shorter types via %apply. 2011-03-02: wsfulton Templated smart pointers overloaded with both const and non const operator-> generated uncompilable code when the pointee was a class with either public member variables or static methods. Regression in 2.0.x reported as working in 1.3.40 by xantares on swig-user mailing list. This file contains a brief overview of the changes made in each release. A detailed description of changes are available in the CHANGES.current and CHANGES files. Release Notes ============= SWIG-2.0.3 summary: - A bug fix release including a couple of fixes for regressions in the 2.0 series. SWIG-2.0.2 summary: - Support for the D language has been added. - Various bug fixes and minor enhancements. - Bug fixes particular to the Clisp, C#, Go, MzScheme, Ocaml, PHP, R, Ruby target languages. SWIG-2.0.1 summary: - Support for the Go language has been added. - New regular expression (regex) encoder for renaming symbols based on the Perl Compatible Regular Expressions (PCRE) library. - Numerous fixes in reporting file and line numbers in error and warning messages. - Various bug fixes and improvements in the C#, Lua, Perl, PHP, Ruby and Python language modules. SWIG-2.0.0 summary: - License changes, see LICENSE file and http://www.swig.org/legal.html. - Much better nested class/struct support. - Much improved template partial specialization and explicit specialization handling. - Namespace support improved with the 'nspace' feature where namespaces can be automatically translated into Java packages or C# namespaces. - Improved typemap and symbol table debugging. - Numerous subtle typemap matching rule changes when using the default (SWIGTYPE) type. These now work much like C++ class template partial specialization matching. - Other small enhancements for typemaps. Typemap fragments are also now official and documented. - Warning and error display refinements. - Wrapping of shared_ptr is improved and documented now. - Numerous C++ unary scope operator (::) fixes. - Better support for boolean expressions. - Various bug fixes and improvements in the Allegrocl, C#, Java, Lua, Octave, PHP, Python, R, Ruby and XML modules. SWIG-1.3.40 summary: - SWIG now supports directors for PHP. - PHP support improved in general. - Octave 3.2 support added. - Various bug fixes/enhancements for Allegrocl, C#, Java, Octave, Perl, Python, Ruby and Tcl. - Other generic fixes and minor new features. SWIG-1.3.39 summary: - Some new small feature enhancements. - Improved C# std::vector wrappers. - Bug fixes: mainly Python, but also Perl, MzScheme, CFFI, Allegrocl and Ruby SWIG-1.3.38 summary: - Output directory regression fix and other minor bug fixes SWIG-1.3.37 summary: - Python 3 support added - SWIG now ships with a version of ccache that can be used with SWIG. This enables the files generated by SWIG to be cached so that repeated use of SWIG on unchanged input files speeds up builds quite considerably. - PHP 4 support removed and PHP support improved in general - Improved C# array support - Numerous Allegro CL improvements - Bug fixes/enhancements for Python, PHP, Java, C#, Chicken, Allegro CL, CFFI, Ruby, Tcl, Perl, R, Lua. - Other minor generic bug fixes and enhancements SWIG-1.3.36 summary: - Enhancement to directors to wrap all protected members - Optimisation feature for objects returned by value - A few bugs fixes in the PHP, Java, Ruby, R, C#, Python, Lua and Perl modules - Other minor generic bug fixes SWIG-1.3.35 summary: - Octave language module added - Bug fixes in Python, Lua, Java, C#, Perl modules - A few other generic bugs and runtime assertions fixed SWIG-1.3.34 summary: - shared_ptr support for Python - Support for latest R - version 2.6 - Various minor improvements/bug fixes for R, Lua, Python, Java, C# - A few other generic bug fixes, mainly for templates and using statements SWIG-1.3.33 summary: - Fix regression for Perl where C++ wrappers would not compile - Fix regression parsing macros SWIG-1.3.32 summary: - shared_ptr support for Java and C# - Enhanced STL support for Ruby - Windows support for R - Fixed long-standing memory leak in PHP Module - Numerous fixes and minor enhancements for Allegrocl, C#, cffi, Chicken, Guile, Java, Lua, Ocaml, Perl, PHP, Python, Ruby, Tcl. - Improved warning support SWIG-1.3.31 summary: - Python modern classes regression fix SWIG-1.3.30 summary: - Python-2.5 support - New language module: R - Director support added for C# - Numerous director fixes and improvements - Improved mingw/msys support - Better constants support in Guile and chicken modules - Support for generating PHP5 class wrappers - Important Java premature garbage collection fix - Minor improvements/fixes in cffi, php, allegrocl, perl, chicken, lua, ruby, ocaml, python, java, c# and guile language modules - Many many other bug fixes SWIG-1.3.29 summary: - Numerous important bug fixes - Few minor new features - Some performance improvements in generated code for Python SWIG-1.3.28 summary: - More powerful renaming (%rename) capability. - More user friendly warning handling. - Add finer control for default constructors and destructors. We discourage the use of the 'nodefault' option, which disables both constructors and destructors, leading to possible memory leaks. Use instead 'nodefaultctor' and/or 'nodefaultdtor'. - Automatic copy constructor wrapper generation via the 'copyctor' option/feature. - Better handling of Windows extensions and types. - Better runtime error reporting. - Add the %catches directive to catch and dispatch exceptions. - Add the %naturalvar directive for more 'natural' variable wrapping. - Better default handling of std::string variables using the %naturalvar directive. - Add the %allowexcept and %exceptionvar directives to handle exceptions when accessing a variable. - Add the %delobject directive to mark methods that act like destructors. - Add the -fastdispatch option to enable smaller and faster overload dispatch mechanism. - Template support for %rename, %feature and %typemap improved. - Add/doc more debug options, such as -dump_module, -debug_typemaps, etc. - Unified typemap library (UTL) potentially providing core typemaps for all scripting languages based on the recently evolving Python typemaps. - New language module: Common Lisp with CFFI. - Python, Ruby, Perl and Tcl use the new UTL, many old reported and hidden errors with typemaps are now fixed. - Initial Java support for languages using the UTL via GCJ, you can now use Java libraries in your favorite script language using gcj + swig. - Tcl support for std::wstring. - PHP4 module update, many error fixes and actively maintained again. - Allegrocl support for C++, also enhanced C support. - Ruby support for bang methods. - Ruby support for user classes as native exceptions. - Perl improved dispatching in overloaded functions via the new cast and rank mechanism. - Perl improved backward compatibility, 5.004 and later tested and working. - Python improved backward compatibility, 1.5.2 and later tested and working. - Python can use the same cast/rank mechanism via the -castmode option. - Python implicit conversion mechanism similar to C++, via the %implicitconv directive (replaces and improves the implicit.i library). - Python threading support added. - Python STL support improved, iterators are supported and STL containers can use now the native PyObject type. - Python many performance options and improvements, try the -O option to test all of them. Python runtime benchmarks show up to 20 times better performance compared to 1.3.27 and older versions. - Python support for 'multi-inheritance' on the python side. - Python simplified proxy classes, now swig doesn't need to generate the additional 'ClassPtr' classes. - Python extended support for smart pointers. - Python better support for static member variables. - Python backward compatibility improved, many projects that used to work only with swig-1.3.21 to swig-1.3.24 are working again with swig-1.3.28 - Python test-suite is now 'valgrinded' before release, and swig also reports memory leaks due to missing destructors. - Minor bug fixes and improvements to the Lua, Ruby, Java, C#, Python, Guile, Chicken, Tcl and Perl modules. SWIG-1.3.27 summary: - Fix bug in anonymous typedef structures which was leading to strange behaviour SWIG-1.3.26 summary: - New language modules: Lua, CLISP and Common Lisp with UFFI. - Big overhaul to the PHP module. - Change to the way 'extern' is handled. - Minor bug fixes specific to C#, Java, Modula3, Ocaml, Allegro CL, XML, Lisp s-expressions, Tcl, Ruby and Python modules. - Other minor improvements and bug fixes. SWIG-1.3.25 summary: - Improved runtime type system. Speed of module loading improved in modules with lots of types. SWIG_RUNTIME_VERSION has been increased from 1 to 2, but the API is exactly the same; only internal changes were made. - The languages that use the runtime type system now support external access to the runtime type system. - Various improvements with typemaps and template handling. - Fewer warnings in generated code. - Improved colour documentation. - Many C# module improvements (exception handling, prevention of early garbage collection, C# attributes support added, more flexible type marshalling/asymmetric types.) - Minor improvements and bug fixes specific to the C#, Java, TCL, Guile, Chicken, MzScheme, Perl, Php, Python, Ruby and Ocaml modules). - Various other bug fixes and memory leak fixes. SWIG-1.3.24 summary: - Improved enum handling - More runtime library options - More bugs fixes for templates and template default arguments, directors and other areas. - Better smart pointer support, including data members, static members and %extend. SWIG-1.3.23 summary: - Improved support for callbacks - Python docstring support and better error handling - C++ default argument support for Java and C# added. - Improved c++ default argument support for the scripting languages plus option to use original (compact) default arguments. - %feature and %ignore/%rename bug fixes and mods - they might need default arguments specified to maintain compatible behaviour when using the new default arguments wrapping. - Runtime library changes: Runtime code can now exist in more than one module and so need not be compiled into just one module - Further improved support for templates and namespaces - Overloaded templated function support added - More powerful default typemaps (mixed default typemaps) - Some important %extend and director code bug fixes - Guile now defaults to using SCM API. The old interface can be obtained by the -gh option. - Various minor improvements and bug fixes for C#, Chicken, Guile, Java, MzScheme, Perl, Python and Ruby - Improved dependencies generation for constructing Makefiles. SWIG-1.3.22 summary: - Improved exception handling and translation of C errors or C++ exceptions into target language exceptions. - Improved enum support, mapping to built-in Java 1.5 enums and C# enums or the typesafe enum pattern for these two languages. - Python - much better STL suppport and support for std::wstring, wchar_t and FILE *. - Initial support for Modula3 and Allegro CL. - 64 bit TCL support. - Java and C#'s proxy classes are now nearly 100% generated from typemaps and/or features for finer control on the generated code. - SWIG runtime library support deprecation. - Improved documentation. SWIG now additionally provides documentation in the form of a single HTML page as well as a pdf document. - Enhanced C++ friend declaration support. - Better support for reference counted classes. - Various %fragment improvements. - RPM fixes. - Various minor improvements and bug fixes for C#, Chicken, Guile, Java, MzScheme, Perl, Php, Python, Ruby and XML.
Source: readme-2.0.3.txt, updated 2011-03-29