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Java cygwin build correction for later versions of Cygwin. C# tutorial added.

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@4791 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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William S Fulton 2003-05-13 10:04:20 +00:00
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@ -5,13 +5,13 @@ SWIG Tutorial
<p> <p>
So you want to get going in a hurry? To illustrate the use of SWIG, So you want to get going in a hurry? To illustrate the use of SWIG,
suppose you have some C functions you want added to Tcl, Perl, Python and Java. suppose you have some C functions you want added to Tcl, Perl, Python, Java and C#.
Specifically, let's say you have them in a file 'example.c' Specifically, let's say you have them in a file 'example.c'
<ul><tt><pre> <ul><tt><pre>
/* File : example.c */ /* File : example.c */
#include &lt;time.h&gt #include &lt;time.h&gt;
double My_variable = 3.0; double My_variable = 3.0;
int fact(int n) { int fact(int n) {
@ -132,7 +132,7 @@ SWIG will also generate JNI code for accessing C/C++ code from Java. Here is an
<blockquote><tt><pre> <blockquote><tt><pre>
$ swig -java example.i $ swig -java example.i
$ gcc -c example.c example_wrap.c -I/c/jdk1.3.1/include -I/c/jdk1.3.1/include/win32 $ gcc -c example.c example_wrap.c -I/c/jdk1.3.1/include -I/c/jdk1.3.1/include/win32
$ gcc -shared example.o example_wrap.o -Wl,--add-stdcall-alias -o example.dll $ gcc -shared example.o example_wrap.o -mno-cygwin -Wl,--add-stdcall-alias -o example.dll
$ cat main.java $ cat main.java
public class main { public class main {
public static void main(String argv[]) { public static void main(String argv[]) {
@ -150,6 +150,31 @@ Mon Mar 4 18:20:31 2002
$ $
</pre></tt></blockquote> </pre></tt></blockquote>
<h3> Building a C# module </h3>
SWIG will also generate code for accessing C/C++ code from C# using PInvoke. Here is an example building a C# module (shown for Linux, see the <a href="http://swig.cs.uchicago.edu/cgi-bin/wiki.pl?SwigFaq/SharedLibraries">SWIG Wiki Shared Libraries</a> page for help with other operating systems). It uses the open source <a href="http://www.southern-storm.com.au/portable_net.html">DotGNU Portable.NET</a> C# compiler which runs on most Unix systems, but works equally well using other C# compilers:
<blockquote><tt><pre>
$ swig -csharp example.i
$ gcc -c -fpic example.c example_wrap.c
$ gcc -shared example.o example_wrap.o -o libexample.so
$ cscc -o runme *.cs
$ cat runme.cs
using System;
public class runme {
static void Main() {
Console.WriteLine(example.My_variable);
Console.WriteLine(example.fact(5));
Console.WriteLine(example.get_time());
}
}
$ ilrun runme
3
120
Tue May 13 10:45:45 2003
$
</pre></tt></blockquote>
<h3> SWIG for the truly lazy </h3> <h3> SWIG for the truly lazy </h3>
As it turns out, it is not always necessary to write a special interface As it turns out, it is not always necessary to write a special interface