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Sun, 27 February 2011 06:23

Novo
Messages: 1358
Registered: December 2006

Ultimate Contributor

Executable can be used as DLL. No changes to UPP is required. A proof of this is attached.

Explanation of how this can be done on Windows.

1) Create an application, which uses UPP. Let's name it exe_dll.

#include <Core/Core.h>

using namespace Upp;

extern String test_function(int i);

CONSOLE_APP_MAIN
{
	Cout() << test_function(1) << EOL;
}

2) Export required symbols via def file

EXPORTS
        ?FormatInt@Upp@@YA?AVString@1@H@Z
        ?MemoryAlloc@Upp@@YAPAXI@Z
        ?MemoryFree@Upp@@YAXPAX@Z
        ?LFree@String0@Upp@@AAEXXZ

3) Compile application. This will create an exe_dll.lib export library.

4) Create a DLL, which is not using UPP. Let's name this DLL test_dll.

#include <Core/Core.h>

using namespace Upp;

__declspec(dllexport) String test_function(int i)
{
	return FormatInt(++i);
}

Although Core.h is included, DLL itself is not linked against UPP.

5) Link test_dll against exe_dll.lib. As a result you will get a test_dll.lib library.

6) Link exe_dll application against test_dll.lib.

7) run exe_dll.

This is a long way. But I believe this work-flow can be automated.

I hope this approach will be useful for the UPP community.

Attachment: exe_dll.zip
(Size: 166.21KB, Downloaded 348 times)

Regards,
Novo

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