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我成功地将 libnfc 与 GNU/Linux 和 C/C++ 一起使用。现在我需要在Windows下编写一个桥接库，这样我就可以很容易地用C#访问libnfc。简而言之：
我无法链接libnfc.dll。

#include <iostream>
#include "libnfc_read_only\include\nfc\nfc.h"
using namespace std;

int main() {
    cout << nfc_version() << "\n";
    return 0;
}

C:\Users\peter\nfc_access>x86_64-w64-mingw32-g++ -o test test.cpp -Llibnfc_build\libnfc -llibnfc

C:\Users\peter\nfc_access>x86_64-w64-mingw32-g++ -o test test.cpp -Llibnfc_build\libnfc -llibnfc
c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skippi
ng incompatible libnfc_build\libnfc/libnfc.dll.a when searching for -llibnfc
c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skippi
ng incompatible libnfc_build\libnfc/libnfc.dll when searching for -llibnfc
c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skippi
ng incompatible libnfc_build\libnfc/libnfc.dll.a when searching for -llibnfc
c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/bin/ld.exe: skippi
ng incompatible libnfc_build\libnfc/libnfc.dll when searching for -llibnfc
c:/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot
 find -llibnfc
collect2: ld returned 1 exit status

当我尝试将我的 dll 与此链接时，也会发生同样的情况。

C:\Users\peter\nfc_access>file libnfc_build/libnfc/libnfc.*
libnfc_build/libnfc/libnfc.dll;   PE32 executable for MS Windows (DLL) (console) Intel 80386 32-bit
libnfc_build/libnfc/libnfc.dll.a; current ar archive

我做错了什么？

// 编辑 C:\Users\peter\nfc_access>file bar_dll.dll lib_bar_dll.a bar_dll.dll; 适用于 MS Windows (DLL) 的 PE32+ 可执行文件（控制台）Mono/.Net 程序集 lib_bar_dll.a；当前的 ar 档案

我无法链接到这个 dll！但是在这种情况下，“Mono/.Net”是什么意思？这是本机代码！

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1 回答 1

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解决了！

C:\Users\peter\nfc_access>g++ -o touchatag_bridge.dll touchatag_bridge.cpp -Wl,--out-implib,touchata
g_bridge.a -Llibnfc_build\libnfc -llibnfc -m32 -shared
Creating library file: touchatag_bridge.a

选项-m32解决了它 - 万岁！

于 2012-06-24T10:00:29.167 回答