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HOWTO Create and Deploy a Sample DLL using MinGW

A sample DLL

The DLL we will build will consist of a single source file "example_dll.cpp":

#include <stdio.h>
#include "example_dll.h"

__stdcall void hello(const char *s)
        printf("Hello %s\n", s);
int Double(int x)
        return 2 * x;
void CppFunc(void)
void MyClass::func(void)

The following header "example_dll.h" declares the interface of the DLL, and is used both when building the DLL and when building an executable that uses the DLL:


  1. ifndef EXAMPLE_DLL_H

HOWTO Create an Import Library for a DLL using MinGW

This page is about how to "call into" an existing DLL, using your mingw program. for information on creating your own DLL library, see DLL.

Usually (read: for all DLLs created with MinGW and also a few others) MinGW links fine against a DLL. No special import library is necessary (see sampleDLL).

However there are situations when it won't. Then one needs a so-called import library to help the linker. The rest of this page gives hints as to how to create such import libraries when there is only the DLL available.

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Site maintenance completed May 25th, 2012 at 12:38 UTC