Link Error ...HELLLPPP

Folk
I try to create a dll and call within my java code....but I get link error when I try to build my library...
here is how I call the library:
.java file
qcSys(command, byteImgLocal);
public native void qcSys(String command, byte[] byteImgLocal);
static
System.loadLibrary("qcSys");
.h file machine genrated
JNIEXPORT void JNICALL Java_SrDesign_qcSys(JNIEnv *, jobject, jstring, jbyteArray);
.c file
#include <StubPreamble.h>
#include <stdio.h>
#include "SrDesign.h"
void SrDesign_qcSys(struct HSrDesign *this,
struct Hjava_lang_String command, HArrayOfByte byteImage)
char *QCimage = unhand(byteImage)->body;
int length = obj_length(byteImage);
FILE *fp;
fp = popen(makeCString(command),"r");
fgets(QCimage, length, fp);
return;
now when I build the project in MVC++ 6 on windows 2000 I get bellow messages
warnning on line fp=popen(makeCString (command), "r");
1. 'popen' undefined; assuming extern returning int
2. 'makeCString' undefined; assuming extern retruning int
3. '=' : 'struct_iobuf *' differs in levels of indirection from int
linking...
qcSys.obj : error LNK2001 : unresolved external symbold _popen
qcSys.obj : error LNK2001 : unresolved external sysmbol _makeCString
Error executing link.exe
can somebody helllllp me please! I'm not familiar with MVC++

now when I build the project in MVC++ 6 on windows
2000 I get bellow messages
warnning on line fp=popen(makeCString (command),
"r");When you get warning you better pay attention to them.
1. 'popen' undefined; assuming extern returning intThis says that the compiler does not know what function 'popen' is.
Given that the method looks a lot like 'fopen' I question where you got it from.
Note that even though the compiler has no idea what you are talking about it has no problem compiling with a best guess.
2. 'makeCString' undefined; assuming extern retruning
intAgain the function is not defined. You need to figure out what it is.
3. '=' : 'struct_iobuf *' differs in levels of
indirection from int
linking...Bad, bad, bad idea to ignore any error that has anything to do with pointers.
Best guess you are not accessing this correctly.
qcSys.obj : error LNK2001 : unresolved external
symbold _popenEither you misspelled the name or you need to find your library that has this (it is not a C/C++ method.)
qcSys.obj : error LNK2001 : unresolved external
sysmbol _makeCString
Error executing link.exe
Same thing as above.

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    -----Original Message-----
    From: Chaudary Shahzad [SMTP:[email protected]]
    Sent: Friday, October 17, 1997 11:22 AM
    To: [email protected]
    Subject: Link error during fcompile
    Hi,
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