JNI DLL VC++

[Ann]

I am working on the helloworld JNI program. I am using VC++ 6.0 to
generate a dll.
Are there any particular settings that I should take care of to
generate the dll.
I have included jni.h and helloworld.h in the vc++ project and have
also copied the .h files in the include directory of VC++.

However I am not able to build the .c file.
I am using JDK1.5

Please suggest a solution...

Thank You,
Ann

 

[Ann]

I am working on the helloworld JNI program. I am using VC++ 6.0 to
generate a dll.
Are there any particular settings that I should take care of to
generate the dll.
I have included jni.h and helloworld.h in the vc++ project and have
also copied the .h files in the include directory of VC++.

However I am not able to build the .c file.
I am using JDK1.5

Please suggest a solution...

Thank You,
Ann

Hi Ann,

I too have VC++ 6.0
If I remember correctly, the instructions suggest that
you use the 'cl' command which is from the command line
and does a compile and link. That's the way I do it and
it works fine (for java 1.4.2 anyway.)

 

[Jean-Francois Briere]

Just take a look at my answer here:

http://forum.java.sun.com/thread.jsp?forum=52&thread=558129&start=1&range=1

Cheers

 

[Ann]

Thank You for your response. But where is the cl.exe ?? Is it part of JDK??

 

[Ann]

Thank You Jean.
I will try this... too

Just take a look at my answer here:

http://forum.java.sun.com/thread.jsp?forum=52&thread=558129&start=1&range=1

Cheers

 

[sp]

an you explain the error message?
That is, you can't compile with VC++?
Have you set the LIB and INCLUDE ?
in VC++:

Tools->Options..
then appear a tabbed windows.
Click on Directories tab.
"Show directory for": Include file
and then Add:
<path_of_your_jdk>\jdk\Include
and
<path_of_your_jdk>\jdk\Include\win32

Then switch the combo "Show directory for" to Library files
and Add:
<path_of_your_jdk>\jdk\Lib


Then recompile.

 

[Ann]

Thank You for your response. But where is the cl.exe ?? Is it part of

JDK??

It is part of VC++, for me it is in
C:\Program Files\Microsoft Visual Studio\VC98\Bin

 

[Ann]

I gave this command
cl -IC:\Program Files\Java\jdk1.5.0\include -IC:\Program
Files\Java\jdk1.5.0\include\win32 -LD HelloWorldImp.c -Fehello.dll

However I am getting this error
The Dll mspdp60.dll could not be found in the specified path

Any suggestions??

 

[Ann]

I gave this command

cl -IC:\Program Files\Java\jdk1.5.0\include -IC:\Program
Files\Java\jdk1.5.0\include\win32 -LD HelloWorldImp.c -Fehello.dll

However it throws an error li
DLL msdp60.dll not found in the specified path.

Any Suggestions?
Thanks..

 

[andreas]

cl -IC:\Program Files\Java\jdk1.5.0\include -IC:\Program
Files\Java\jdk1.5.0\include\win32 -LD HelloWorldImp.c -Fehello.dll

However it throws an error li
DLL msdp60.dll not found in the specified path.

Any Suggestions?
Thanks..

that happens when you run cl.exe from command line because it won't find
the msdp60.dll . but note that cl.exe is part of your VS 6.0.

it is called when compiling and linking in VS 6.0

just build your program as a dll library (from within your IDE). there are
no other requirements
to get it to work with jni. at least, thats what i did and it worked fine...

andreas