QuantLib using Swig to Java in MAC environment

First, Mac installation Boost method: http://blog.csdn.net/xujiezhige/article/details/8230493

Second, Swig, use sudo install Swig here

Third, how to convert a section C + + to Java:

Like having a example.c.

/*file:example.c*/#include<time.h>DoubleMy_variable =3.0; intFactintN) {if(N <=1)return 1; Else returnN*fact (n1); }  intMy_mod (intXinty) {return(%y); }      Char*Get_time () {time_t ltime; Time (&ltime); returnCTime (&ltime); } 

1. Now, in order to add these files to your favorite language, you need to write an interface file (interface files) into the swig. These C functions interface files may resemble the following:

/*example.i*/%Module Example%{ /*Put header files here or function declarations like below*/ extern Doublemy_variable;extern intFactintN); extern intMy_mod (intXinty); extern Char*get_time ();%}  extern Doublemy_variable;extern intFactintN); extern intMy_mod (intXinty); extern Char*get_time ();

2. Command line:

$ Swig-java EXAMPLE.I

If it is a C + + file

$ swig-c++-java example.i

There are 3 more files under directory:

Example.java , Examplejni.java, Example_wrap.cxx

3. Find the Java_home on your Mac, such as mine:

Library/java/javavirtualmachines/jdk1.8.0_77.jdk/contents/home/include

Command line: $

Cc-c Example.cpp example_wrap.cxx-i/library/java/javavirtualmachines/jdk1.8.0_77.jdk/contents/home/include/,

At this point will be an error that can not find the file Jni_md.h, find the include, at this time found that include a Darwin, the following jni_md.h copied to include below,

Then enter the above command line, through.

There are two more files under directory now:

EXAMPLE.O, EXAMPLE_WRAP.O

4. Enter the command line: cc-framework javavm-bundle example.o example_wrap.o-o libexample.jnilib

Generated a new file Libexample.jnilib, if not this file, directly Javac Main.java, will be error:

Exception in thread "main" java.lang.UnsatisfiedLinkError:no example in Java.library.path

At Java.lang.ClassLoader.loadLibrary (classloader.java:1867)

At Java.lang.Runtime.loadLibrary0 (runtime.java:870)

At Java.lang.System.loadLibrary (system.java:1122)

At Main.main (main.java:12)

5. Create a new Main.java under the folder, enter

 Public class Main {   publicstaticvoid  main (String argv[]) {     system.loadlibrary ( "Example");     System.out.println (Example.getmy_variable ());     System.out.println (Example.fact (5));     System.out.println (Example.get_time ());   } }

Note that if there is no system.loadlibrary ("example"); This sentence, will report the error:

Exception in thread "main" Java.lang.UnsatisfiedLinkError:exampleJNI.My_variable_get () D

At Examplejni.my_variable_get (Native Method)

At Example.getmy_variable (example.java:16)

At Main.main (main.java:13)

Input command line: $ javac Main.java, folder 3 more files: Example.class, Examplejni.class, Main.class

Input command line: $ java Main

Output:

3.0

120

Mon APR 25 10:56:18 2016

This is done using the Swig conversion to Java.

QuantLib using Swig to Java in MAC environment