No need to use System.loadLibrary("totocpp");
System.loadLibrary("toto"); in java. Use this libraries in
JNI.Can you send the Android.mk file.
On Fri, Nov 6, 2009 at 11:54 AM, Nightwolf <[email protected]> wrote:
> Do you use exactly this code?
> There should be two underscore symbols.
>
> #ifdef __cplusplus
> extern "C" {
> #endif
>
> On 4 ноя, 13:47, zenoname <[email protected]> wrote:
> > Hello,
> >
> > I'm trying to create a simple project with the Android NDK.
> > I created a jni library which is calling a function from a shared C*
> > library.
> > I make it work with a C library but as soon as I try with a C++
> > library it crashes (when calling the c++ function)
> > As many posts I read I suspect a name mangling problem but whatever I
> > tried it doesn't change the problem
> >
> > Here is a summary of what I've done : I created a jni library linking
> > two simple libs (jnilib my jni interface with java, libtoto.so my c
> > library, libtotocpp.so my cpp lib). The c* libs simply export a
> > function returning a int. If I call GetNumber() form the C lib no
> > problem. If I call the GetNumberCPP() from my C++ lib it crashes
> >
> > Here are the code and compilation stuffs.
> >
> > If anyone could tell me what's wrong that would be very very cool :)
> >
> > Thanks.
> >
> > - jnilib.c (arm-eabi-gcc -shared jnilib.c -o libjnilib.so libtoto.so
> > libtotocpp.so -nostdlib -Bdynamic)
> > Here if I don't call GetNumberCPP() all works
> >
> > #include "toto.h"
> > #include "toto.hpp"
> >
> > #ifdef _cplusplus
> > extern "C"
> > {
> > #endif
> > jstring Java_amob_jnscapi_jnscapi_initserver (JNIEnv* env,
> > jobject thiz )
> > {
> > char version[50];
> > sprintf(version,"%d %d",GetNumberC(),GetNumberCPP());
> > return (*env)->NewStringUTF(env, version);
> > }
> > #ifdef _cplusplus
> > }
> >
> > - libtoto.so (arm-eabi-gcc -shared toto.c -o libtoto.so -nostdlib -
> > Bdynamic)
> >
> > #include "toto.h"
> > int GetNumberC()
> > {
> > return 33;
> > }
> >
> > - libtotocpp.so (arm-eabi-g++ -shared toto.cpp -o libtotocpp.so -
> > nostdlib -Bdynamic)
> >
> > #include "toto.hpp"
> > #ifdef _cplusplus
> > extern "C"
> > {
> > #endif
> > int GetNumberCPP()
> > {
> > return 56;
> > }
> > #ifdef _cplusplus
> > }
> > #endif
> >
> > - In my java class I tried to load all libs ...
> >
> > System.loadLibrary("totocpp");
> > System.loadLibrary("toto");
> > System.loadLibrary("jnilib");
>
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