Hello!
As far as I know, C++ compiler normally compiles the .cpp files to object files (.o), then the linker can connect everything by the header (.h) files. For simplicity, I have the following files in my Strategy folder. (In the Source/VC++/compile.bat file I added the main Zorro folder, so it can see the files I include.)
cpptest.cpp
#include "func.h"
#include <zorro.h>
DLLFUNC void main(){
justafunction();
}
func.h
#pragma once
void justafunction();
func.cpp
#include "obj.h"
void justafunction(){
Something a;
a.asd();
}
obj.h
#pragma once
class Something{
public:
void hello();
void asd();
};
obj.cpp
#include "obj.h"
#include "func.h"
void Something::hello(){justafunction();}
void Something::asd(){printf("called asd");}
This is a demonstration of cross-linking: I am using a class in a function, but that class also using that function. If I wouldn't use header files, only the cpp, I wouldn't determine the include order, because if I start with the func.cpp, it will fail: it needs the obj.cpp. (I want to separate my huge code to smaller files, that's why I need all this.) It works fine in a simple Visual Studio console application, but compiling from Zorro, the compiler is not findig the definitions. The error of the above codes are the following when I try to run cpptest.cpp with Zorro:
cpptest.cpp compiling..
cpptest.cpp
ZorroDLL.cpp
Generating Code...
Creating library Cache\Imp.lib and object Cache\Imp.exp
cpptest.obj : error LNK2019: unresolved external symbol "void __cdecl justafunction(void)" (?justafunction@@YAXXZ) referenced in function _main
myStrategy\cpptest.dll : fatal error LNK1120: 1 unresolved externals
Error 061: Can't compile cpptest.dll
It looks like for me that the compiler did not build the .o files. Do you have any suggestions how can I do that automatically from Zorro UI (I mean when I compile the script normally, clicking on Test/Trade)?
Thank you very much!