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Problem running C++ implementaion in Netbeans 6.8 (cygwin compiler)  RSS feed

 
Greenhorn
Posts: 2
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Hi All,

I would like to summarize the steps followed to run the JNI code:

1. Wrote a Java program named "HelloWorld.java" in eclipse:




2. Using External Tools Configurations, tried creating a Header file for the above class. The system generated header file:



3. Wrote the C implementation of the HelloWorld class as:




I am using Netbeans 6.8 IDE to create the C Source file.
Compiler: Cygwin (gcc 3.4.4)

When I compile the above code, I am getting a no. of errors in <jni.h>

The output window of Netbeans looks something like this:

MS-DOS style path detected: C:\Program Files\Java\jdk1.5.0_11\include\jni.h.gch
Preferred POSIX equivalent is: /cygdrive/c/Program Files/Java/jdk1.5.0_11/include/jni.h.gch
CYGWIN environment variable option "nodosfilewarning" turns off this warning.
Consult the user's guide for more details about POSIX paths:
http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
from HelloWorld.c:2:
In file included from HelloWorld.h:8,
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:169: error: conflicting types for 'JNINativeMethod'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:169: error: previous declaration of 'JNINativeMethod' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:182: error: redefinition of typedef 'JNIEnv'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:182: error: previous declaration of 'JNIEnv' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:196: error: redefinition of typedef 'JavaVM'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:196: error: previous declaration of 'JavaVM' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:199: error: redefinition of `struct JNINativeInterface_'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:762: error: redefinition of `struct JNIEnv_'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1840: error: redefinition of `struct JavaVMOption'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1843: error: redefinition of typedef 'JavaVMOption'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1843: error: previous declaration of 'JavaVMOption' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1845: error: redefinition of `struct JavaVMInitArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1851: error: redefinition of typedef 'JavaVMInitArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1851: error: previous declaration of 'JavaVMInitArgs' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1853: error: redefinition of `struct JavaVMAttachArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1858: error: redefinition of typedef 'JavaVMAttachArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1858: error: previous declaration of 'JavaVMAttachArgs' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1862: error: redefinition of `struct JDK1_1InitArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1884: error: redefinition of typedef 'JDK1_1InitArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1884: error: previous declaration of 'JDK1_1InitArgs' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1886: error: redefinition of `struct JDK1_1AttachArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1888: error: redefinition of typedef 'JDK1_1AttachArgs'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1888: error: previous declaration of 'JDK1_1AttachArgs' was here
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1895: error: redefinition of `struct JNIInvokeInterface_'
C:\Program Files\Java\jdk1.5.0_11\include\jni.h:1911: error: redefinition of `struct JavaVM_'
make: * [build/Debug/Cygwin-Windows/HelloWorld.o] Error 1
BUILD FAILED (exit value 2, total time: 1s)



I dont think so that any change in jni.h is needed. Its something which compiler is not understanding. Don't know what.

Please help.
 
It is sorta covered in the JavaRanch Style Guide.
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