SWIG Tcl Examples

The following examples illustrate the use of SWIG with Tcl.

• simple. A minimal example showing how SWIG can be used to wrap a C function and a global variable.
• constants. This shows how preprocessor macros and certain C declarations are turned into constants.
• variables. How SWIG can be used to wrap C global variables.
• value. How to pass and return structures by value.
• class. How wrap a simple C++ class.
• reference. C++ references.
• pointer. Simple pointer handling.
• funcptr. Pointers to functions.

Compilation Issues

• To create a Tcl extension, SWIG is run with the following options:

  % swig -tcl interface.i
  

• Please see the Windows page in the main manual for information on using the examples on Windows.

• The compilation of examples is done using the file Example/Makefile. This makefile performs a manual module compilation which is platform specific. Typically, the steps look like this (Linux):

  unix % swig -tcl interface.i
  unix % gcc -fpic -c interface_wrap.c -I/usr/local/include
  unix % gcc -shared interface_wrap.o $(OBJS) -o interface.so
  unix % tclsh8.3
  % load ./interface.so
  % blah ...
  

Compatibility

• Linux
• Solaris