Re: [Swig-user] Problem with Java wrapper: java.lang.UnsatisfiedLinkError error

[Xavier M. <xa...@te...>]

Hallo

sorry for the 3 mails.

I finally got the solution from the examples makefile...
I've got to use  by linking

$(GCC) -shared   -mno-cygwin -mthreads -Wl,--add-stdcall-alias -D__WIN32__


xm


Xavier Marduel wrote:
> Hi,
> I've already managed to create a java wrapper of c code on linux, and 
> also on windows, but using the code on Windows fails:
>
> I've created the dll named "narecord.dll" and "narecord.lib", I've got a 
> test program in java  which looks usual (as in the examples)
>
> dll was created with :
> gcc.exe -shared -dll -mno-cygwin -Wl,--out-implib,narecord.lib 
> -D__WIN32__   -o narecord.dll OBJ_SHARED.x86-mingw32/narecord_wrap.o 
> (others .o) (other .a)
>
> but I've got the following error msg:
>
> java code:
>
> pstring_t = new pstring_t();
>
>  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> Exception in thread "main" java.lang.UnsatisfiedLinkError: 
> narecordJNI.new_pstring_t()J
>        at narecordJNI.new_pstring_t(Native Method)
>        at pstring_t.<init>(pstring_t.java:46)
>        at narecord_driver.main(narecord_driver.java:529)
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>
> ie the library seems to be correctly loaded (i guess) because the code
>
> public class narecord_driver {
>  static
>  {
>    try
>    {
>        System.loadLibrary("narecord");
>    }
>    catch (UnsatisfiedLinkError e)
>    {
>      System.err.println("Native code library failed to load. See the 
> chapter on Dynamic Linking Problems in the SWIG Java documentation for 
> help.\n" + e);
>      System.exit(1);
>    }
>  }
>
> does not throw any exception.
>
> With the dll viewer "depends.exe" (dependancy walker) I can see that my 
> function is indeed inside the dll
> (well, it is named  "Java_narecordJNI_new_1pstring_1t@8" but I also 
> guess it is correct) so what's wrong ?
>
> Can anyone tell me what I'm doing wrong ?
>
> many thanks in advance,
>
> xm
>
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