[Dev-C++] JNI and dll

[Jean P. D. <dav...@vi...>]

Hi every one,
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with this it worked
compiler                                   compiler C++
linker(=E9diteur de lien)
-DBUILDING_DLL=3D1             -DBUILDING_DLL=3D1
--no-export-all-symbols --add-stdcall-alias
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but I still have   dllwrap.exe: no export definition file provided.  ???
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Jean Pierre Daviau
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=3D  IN JAVA file
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  static
  {
    System.loadLibrary("tn");
  }
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D       for  reference    =
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I red the doc and other things.  They all talk about the command lines.
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I tried to put command lines exerps in compiler  parameters and=20
make parameters without success.
for example
-shared -o mydll.dll mydll.o
gcc -o myprog myprog.ca -L./ -lmydll
etc.
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If I create a dll windows project.  The winmain reference is added.
As you can see there is no main in the c file because it is caled by the
main in Java.class.
here is the output of the compiler in DEVC++
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---
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Compilateur: Default compiler
Building Makefile: "C:\Documents and Settings\Jean
Pierre\Bureau\DEVC++\checkRegistration\Makefile.win"
Finding dependencies for file: C:\Documents and Settings\Jean
Pierre\Bureau\DEVC++\checkRegistration\serie.c
Ex=E9cution de  make...
make.exe -f "C:\Documents and Settings\Jean
Pierre\Bureau\DEVC++\checkRegistration\Makefile.win" all
windres.exe -i serial_private.rc -I rc -o serial_private.res -O coff
--include-dir C:/JDK11~1.8/lib
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dllwrap.exe --output-def libserial.def --implib libserial.a serie.o
serial_private.res -L"C:/Dev-Cpp/lib" -L"F:/unzipM_soft/w32api-2.0/lib"
-L"C:/jdk1.1.8/lib" -L"C:/jdk1.1.8/bin" --no-export-all-symbols
--add-stdcall-alias   -o serial.dll
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dllwrap.exe: no export definition file provided.
Creating one, but that may not be what you want
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Ex=E9cution termin=E9e
Compilation OK

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____
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#include "Serial.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stddef.h>
#define JNI_FALSE  0=20
#define JNI_TRUE   1=20
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     char alphabet[] =3D "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ "
         "abcdefghijklmnopqrstuvwxyz_-";
     const int alphas =3D sizeof alphabet - 1;
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JNIEXPORT jstring JNICALL Java_Serial_numero
     (JNIEnv *env, jobject jobjc, jstring jstr){=20
jthrowable exc;
jboolean iscopy;
jstring ret;
jsize len;
int i, j;
const char *fmt;
char ligne[11];
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fmt =3D (*env)->GetStringUTFChars(env, jstr, &iscopy);
len =3D (*env)->GetStringLength(env, jstr);
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printf("The string '%s' received by C has %d characters.\n", fmt, len );
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for(i=3D0;i<11;i++){
  for(j=3D0;j<alphas;j++){
    if(alphabet[j] =3D=3D fmt[i]){
    printf("%2d- %c ",i, fmt[i]);
  ligne[i] =3D alphabet[65-j];
  printf("%c\n",  ligne[i]);
  /*printf( "Completed set, checking for exceptions..\n" );*/
   exc =3D (*env)->ExceptionOccurred( env );
  break;
  }
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  }
}
ligne[11] =3D '\0';=20
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printf("The string mixed by C is : %s\n", ligne);
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ret =3D (jstring)(*env)->NewStringUTF(env, ligne);
(*env)->ReleaseStringUTFChars(env, jstr, fmt);
 if (exc)
 {
   printf( "Exception detected..\n" );
  (*env)->ExceptionDescribe( env );
  (*env)->ExceptionClear(env);
 }
return ret;
}
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