004
19.01.2010, 23:28 Uhr
~Grupto
Gast
|
Also ich habe jetzt folgenden code:
Ich habe C++ code:
// MyC.h
| C++: |
#ifndef MyC_
#define MyC_
#include <iostream>
template<class T> class MyC
{
public:
MyC<T>() {
data = new T[10];
memset(data, 0, 10*sizeof(T));
}
~MyC<T>() { delete [] data; }
void print(MyC<int>* mtx);
T* data;
};
template <> void
MyC<int>::print(MyC<int>* mtx)
{
// Hier z.B. mtx ausgeben oder andere
// Dinge mit mtx tun...
int a;
for (int i = 0; i <10; i++)
std::cout << mtx->data[i] << std::endl;
}
#endif
|
//MyB.h
| C++: |
#ifndef MyB_
#define MyB_
#include "MyC.h"
template<class T> class MyB
{
public:
MyB<T>() {
mydata = new T[10];
}
// do something with mtx
void Algorithm(MyC<T>*& mtx) {
for (int i= 0; i < 10; i++)
mtx->data[i] = i;
mtx->print(mtx);
memcpy(mtx->data,mydata,10*sizeof(T));
}
T* mydata;
};
#endif
|
Und so wie ich es vertanden habe brauche ich für diese Klassen jetz wrapper:
Also cpp-wrapper:
// myb_wrapper.h
| C++: |
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct WrapMyB_int_
{
void* ptr;
} WrapMyB_int;
WrapMyB_int myb_int_create(void);
void myb_int_algorithm(WrapMyB_int this_, WrapMyC_int arg);
void myb_int_delete(WrapMyB_int this_);
#ifdef __cplusplus
} /*end extern "C"*/
#endif
|
die myb_wrapper.cpp
| C++: |
#include "myb_wrapper.h"
#include "myc_wrapper.h"
#include "C++/MyB.h" //MyB<T>
WrapMyB_int myb_int_create(void)
{
WrapMyB_int tmp;
tmp.ptr = new MyB<int>();
return tmp;
}
void myb_int_algorithm(WrapMyB_int this_, WrapMyC_int arg)
{
MyB<int>* mb = static_cast<MyB<int>*> (this_.ptr);
//mb->Algorithm(arg);
}
void myb_int_delete(WrapMyB_int this_)
{
MyB<int>* mb = static_cast<MyB<int>*> (this_.ptr);
delete mb;
this_.ptr = NULL;
}
|
und analog:
//myc_wrapper.h
| C++: |
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct WrapMyC_int_
{
void* ptr;
} WrapMyC_int;
WrapMyC_int myc_int_create(void);
// WrapMyC_int myc_int_create_1(int* data);
// void myc_int_writetobuffer(WrapMyC_int this_, int* buffer);
void myc_int_delete(WrapMyC_int this_);
#ifdef __cplusplus
} /*end extern "C"*/
#endif
|
und die cpp myc_wrapper.cpp
| C++: |
#include "myc_wrapper.h"
#include "C++/MyC.h" //MyC<T>
WrapMyC_int myc_int_create(void)
{
WrapMyC_int tmp;
tmp.ptr = new MyC<int>();
return tmp;
}
// WrapMyC_int myc_int_create_1(int* data)
// {
//
// }
// void myc_int_writetobuffer(WrapMyC_int this_, int* buffer)
// {
// ||MLC||
// }
void myc_int_delete(WrapMyC_int this_)
{
MyC<int>* mc = static_cast<MyC<int>*> (this_.ptr);
delete mc;
this_.ptr = NULL;
}
|
Jetzt kompiliere ich folgendes:
| Code: |
g++ -c myb_wrapper.cpp
g++ -c myc_wrapper.cpp
|
und erhalte objekte davon.
Ich baue mir eine statische library über
| Code: |
ar -r libmyLib.a myc_wrapper.o myb_wrapper.o
|
Jetzt habe cih meinen C-Code:
//mainnew.c
| C++: |
//main.c
#include "myc_wrapper.h"
#include "myb_wrapper.h"
#include "stdlib.h"
int main()
{
int i;
int* data = calloc(10, sizeof(int));
for (i = 10; i > 0; i--)
data[10-i] = i;
/*...*/
//MyC<int> * mtx = new MyC<int>();
WrapMyC_int mtx = myc_int_create(); //konstruktor
//MyB<int>().Algorithm(mtx);
WrapMyB_int tmp = myb_int_create(); //konstruktor
//myb_int_algorithm(tmp, mtx); //methode
myc_int_delete(mtx); //destruktor
myb_int_delete(tmp); //destruktor
/*...*/
// //MyC<int>* mtx = convert_data_to_MyC(data);
// WrapMyC_int mtx2 = myc_int_create_1(data); //anderer konstruktor
//
// //MyB<int>().Algorithm(mtx);
// WrapMyB_int tmp2 = myb_int_create(); //konstruktor
// myb_int_algorithm(tmp2, mtx2); //methode
// myc_int_writetobuffer(mtx2, data);
//
// myc_int_delete(mtx2); //destruktor
// myb_int_delete(tmp2); //destruktor
//
// for (i = 0; i < 10; i++)
// printf("data[%d] = %d\n", i, data[i]);
free(data);
}
|
Die Lib heißt: libmyLib.a
Man kompiliert doch in gcc über -L lmylib.a.
Es klappt für keine der Varianten:
1 Variante:
| Code: |
gcc -o mainnew mainnew.c -lmyLib
warning: no newline at end of file
/usr/bin/ld: cannot find -lmyLib.a
collect2: ld gab 1 als Ende-Status zurück
|
2 Variante
| Code: |
gcc -o mainnew mainnew.c libmyLib.a
mainnew.c:42:2: warning: no newline at end of file
libmyLib.a(myb_wrapper.o): In function `MyC<int>::print(MyC<int>*)':
myb_wrapper.cpp:(.text+0xf6): multiple definition of `MyC<int>::print(MyC<int>*)'
libmyLib.a(myc_wrapper.o):myc_wrapper.cpp:(.text+0x100): first defined here
libmyLib.a(myc_wrapper.o): In function `__static_initialization_and_destruction_0(int, int)':
myc_wrapper.cpp:(.text+0x23): undefined reference to `std::ios_base::Init::Init()'
libmyLib.a(myc_wrapper.o): In function `__tcf_0':
myc_wrapper.cpp:(.text+0x6c): undefined reference to `std::ios_base::Init::~Init()'
libmyLib.a(myc_wrapper.o): In function `myc_int_delete':
myc_wrapper.cpp:(.text+0x9c): undefined reference to `operator delete(void*)'
libmyLib.a(myc_wrapper.o): In function `myc_int_create':
myc_wrapper.cpp:(.text+0xb9): undefined reference to `operator new(unsigned int)'
myc_wrapper.cpp:(.text+0xe2): undefined reference to `operator delete(void*)'
libmyLib.a(myc_wrapper.o): In function `MyC<int>::print(MyC<int>*)':
myc_wrapper.cpp:(.text+0x126): undefined reference to `std::cout'
myc_wrapper.cpp:(.text+0x12b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
myc_wrapper.cpp:(.text+0x133): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
myc_wrapper.cpp:(.text+0x13b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
libmyLib.a(myc_wrapper.o): In function `MyC<int>::~MyC()':
myc_wrapper.cpp:(.text._ZN3MyCIiED1Ev[MyC<int>::~MyC()]+0x18): undefined reference to `operator delete[](void*)'
libmyLib.a(myc_wrapper.o): In function `MyC<int>::MyC()':
myc_wrapper.cpp:(.text._ZN3MyCIiEC1Ev[MyC<int>::MyC()]+0xf): undefined reference to `operator new[](unsigned int)'
libmyLib.a(myc_wrapper.o):(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
libmyLib.a(myb_wrapper.o): In function `__static_initialization_and_destruction_0(int, int)':
myb_wrapper.cpp:(.text+0x31): undefined reference to `std::ios_base::Init::Init()'
libmyLib.a(myb_wrapper.o): In function `__tcf_0':
myb_wrapper.cpp:(.text+0x7a): undefined reference to `std::ios_base::Init::~Init()'
libmyLib.a(myb_wrapper.o): In function `myb_int_delete':
myb_wrapper.cpp:(.text+0x93): undefined reference to `operator delete(void*)'
libmyLib.a(myb_wrapper.o): In function `myb_int_create':
myb_wrapper.cpp:(.text+0xaf): undefined reference to `operator new(unsigned int)'
myb_wrapper.cpp:(.text+0xd8): undefined reference to `operator delete(void*)'
libmyLib.a(myb_wrapper.o): In function `MyC<int>::print(MyC<int>*)':
myb_wrapper.cpp:(.text+0x11c): undefined reference to `std::cout'
myb_wrapper.cpp:(.text+0x121): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
myb_wrapper.cpp:(.text+0x129): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
myb_wrapper.cpp:(.text+0x131): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
libmyLib.a(myb_wrapper.o): In function `MyB<int>::MyB()':
myb_wrapper.cpp:(.text._ZN3MyBIiEC1Ev[MyB<int>::MyB()]+0xe): undefined reference to `operator new[](unsigned int)'
libmyLib.a(myb_wrapper.o):(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld gab 1 als Ende-Status zurück
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3 Variante
| Code: |
gcc -o mainnew mainnew.c -libmyLib.a
mainnew.c:42:2: warning: no newline at end of file
/usr/bin/ld: cannot find -libmyLib.a
collect2: ld gab 1 als Ende-Status zurück
|
4 Variante
| Code: |
gcc -o mainnew mainnew.c -L libmyLib.a
mainnew.c:42:2: warning: no newline at end of file
/tmp/cc2XoFP3.o: In function `main':
mainnew.c:(.text+0x57): undefined reference to `myc_int_create'
mainnew.c:(.text+0x6b): undefined reference to `myb_int_create'
mainnew.c:(.text+0x7f): undefined reference to `myc_int_delete'
mainnew.c:(.text+0x8a): undefined reference to `myb_int_delete'
collect2: ld gab 1 als Ende-Status zurück
|
Was mache ich falsch? |
