create share library with WiringPI





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0















I want create a shared library, because I need this for JNI.



I have two files



PiezoSpeaker.c



#include "PiezoSpeaker.h"

#include <stdio.h>



#include <string.h>

#include <wiringPi.h>

#include <softTone.h>



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

(JNIEnv *env, jobject jobject, jint khz) {

wiringPiSetup();

softToneCreate(29);

softToneWrite (29, khz);

}



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

(JNIEnv *env, jobject jobject, jint khz, jint duration) {



}


and



PiezoSpeaker.h



/* DO NOT EDIT THIS FILE - it is machine generated */

#include <jni.h>

/* Header for class PiezoSpeaker */



#ifndef _Included_PiezoSpeaker

#define _Included_PiezoSpeaker

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (I)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

  (JNIEnv *, jobject, jint);



/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (II)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

  (JNIEnv *, jobject, jint, jint);



#ifdef __cplusplus

}

#endif

#endif


I compile this with gcc



gcc -c -fPIC -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/" -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/linux" -IwiringPi -Ipthread PiezoSpeaker.c



gcc -shared -o share.so PiezoSpeaker.o


I become the error, that the symbol is undefined. The gcc command is wrong, because it does not include the wiringPi Library. How can I link the library, that the WiringPi Lib is included?






java gcc java-native-interface wiringpi







share|improve this question


















  • 1





    -lWiringPi ? You may need a -L argument to tell the linker where to look.

    – Botje
    Nov 22 '18 at 15:55


















0















I want create a shared library, because I need this for JNI.



I have two files



PiezoSpeaker.c



#include "PiezoSpeaker.h"

#include <stdio.h>



#include <string.h>

#include <wiringPi.h>

#include <softTone.h>



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

(JNIEnv *env, jobject jobject, jint khz) {

wiringPiSetup();

softToneCreate(29);

softToneWrite (29, khz);

}



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

(JNIEnv *env, jobject jobject, jint khz, jint duration) {



}


and



PiezoSpeaker.h



/* DO NOT EDIT THIS FILE - it is machine generated */

#include <jni.h>

/* Header for class PiezoSpeaker */



#ifndef _Included_PiezoSpeaker

#define _Included_PiezoSpeaker

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (I)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

  (JNIEnv *, jobject, jint);



/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (II)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

  (JNIEnv *, jobject, jint, jint);



#ifdef __cplusplus

}

#endif

#endif


I compile this with gcc



gcc -c -fPIC -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/" -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/linux" -IwiringPi -Ipthread PiezoSpeaker.c



gcc -shared -o share.so PiezoSpeaker.o


I become the error, that the symbol is undefined. The gcc command is wrong, because it does not include the wiringPi Library. How can I link the library, that the WiringPi Lib is included?






java gcc java-native-interface wiringpi







share|improve this question


















  • 1





    -lWiringPi ? You may need a -L argument to tell the linker where to look.

    – Botje
    Nov 22 '18 at 15:55














0












0








0


0






I want create a shared library, because I need this for JNI.



I have two files



PiezoSpeaker.c



#include "PiezoSpeaker.h"

#include <stdio.h>



#include <string.h>

#include <wiringPi.h>

#include <softTone.h>



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

(JNIEnv *env, jobject jobject, jint khz) {

wiringPiSetup();

softToneCreate(29);

softToneWrite (29, khz);

}



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

(JNIEnv *env, jobject jobject, jint khz, jint duration) {



}


and



PiezoSpeaker.h



/* DO NOT EDIT THIS FILE - it is machine generated */

#include <jni.h>

/* Header for class PiezoSpeaker */



#ifndef _Included_PiezoSpeaker

#define _Included_PiezoSpeaker

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (I)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

  (JNIEnv *, jobject, jint);



/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (II)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

  (JNIEnv *, jobject, jint, jint);



#ifdef __cplusplus

}

#endif

#endif


I compile this with gcc



gcc -c -fPIC -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/" -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/linux" -IwiringPi -Ipthread PiezoSpeaker.c



gcc -shared -o share.so PiezoSpeaker.o


I become the error, that the symbol is undefined. The gcc command is wrong, because it does not include the wiringPi Library. How can I link the library, that the WiringPi Lib is included?






java gcc java-native-interface wiringpi







share|improve this question














I want create a shared library, because I need this for JNI.



I have two files



PiezoSpeaker.c



#include "PiezoSpeaker.h"

#include <stdio.h>



#include <string.h>

#include <wiringPi.h>

#include <softTone.h>



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

(JNIEnv *env, jobject jobject, jint khz) {

wiringPiSetup();

softToneCreate(29);

softToneWrite (29, khz);

}



JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

(JNIEnv *env, jobject jobject, jint khz, jint duration) {



}


and



PiezoSpeaker.h



/* DO NOT EDIT THIS FILE - it is machine generated */

#include <jni.h>

/* Header for class PiezoSpeaker */



#ifndef _Included_PiezoSpeaker

#define _Included_PiezoSpeaker

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (I)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__I

  (JNIEnv *, jobject, jint);



/*

 * Class:     PiezoSpeaker

 * Method:    tone

 * Signature: (II)V

 */

JNIEXPORT void JNICALL Java_PiezoSpeaker_tone__II

  (JNIEnv *, jobject, jint, jint);



#ifdef __cplusplus

}

#endif

#endif


I compile this with gcc



gcc -c -fPIC -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/" -I"/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt/include/linux" -IwiringPi -Ipthread PiezoSpeaker.c



gcc -shared -o share.so PiezoSpeaker.o


I become the error, that the symbol is undefined. The gcc command is wrong, because it does not include the wiringPi Library. How can I link the library, that the WiringPi Lib is included?






java gcc java-native-interface wiringpi




java gcc java-native-interface wiringpi






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 22 '18 at 8:34









HoonesHoones

203




203








  • 1





    -lWiringPi ? You may need a -L argument to tell the linker where to look.

    – Botje
    Nov 22 '18 at 15:55














  • 1





    -lWiringPi ? You may need a -L argument to tell the linker where to look.

    – Botje
    Nov 22 '18 at 15:55








1




1





-lWiringPi ? You may need a -L argument to tell the linker where to look.

– Botje
Nov 22 '18 at 15:55





-lWiringPi ? You may need a -L argument to tell the linker where to look.

– Botje
Nov 22 '18 at 15:55












0






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