C ++ wininet undefined引用,即使使用-lwininet链接器标志

时间:2017-07-28 12:02:22

标签: c++ c eclipse wininet

我是WinInet的新手,并且遵循简单的C ++代码:

void DoIt(std::string& host, std::string& username, std::string& password) {
    HINTERNET hInternet;
    HINTERNET hFtpSession;
    hInternet = InternetOpen(NULL, INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
    if (hInternet == NULL) {
        std::cout << "Error: " << GetLastError();
    } else {
        hFtpSession = InternetConnect(hInternet, host.c_str(), INTERNET_DEFAULT_FTP_PORT, username.c_str(), password.c_str(), INTERNET_SERVICE_FTP, 0, 0);
        if (hFtpSession == NULL) {
            std::cout << "Error: " << GetLastError();
        } else {
            if (!FtpPutFile(hFtpSession, "C:\\temp\\ftp\\myFile.txt", "/myFile.txt", FTP_TRANSFER_TYPE_BINARY, 0)) {
                std::cout << "Error: " << GetLastError();
            }
        }
    }
}

但是编译器的输出是:

Info: Configuration "Debug" uses tool-chain "MinGW GCC" that is unsupported on this system, attempting to build anyway.
Info: Internal Builder is used for build
g++ -O0 -g3 -Wall -std=c++11 -o main.o "..\\main.cpp" 
C:\Users\u007\AppData\Local\Temp\ccFEaWlK.o: In function `Z4DoItRSsS_S_':
C:\projects\ftp-test\Debug/../main.cpp:10: undefined reference to `_imp__InternetOpenA@20'
C:\projects\ftp-test\Debug/../main.cpp:14: undefined reference to `_imp__InternetConnectA@32'
C:\projects\ftp-test\Debug/../main.cpp:18: undefined reference to `_imp__FtpPutFileA@20'
collect2.exe: error: ld returned 1 exit status

(我链接到Eclipse链接器中的wininet.lib库) Adding <code>wininet.lib</code> in Eclipse

(我还尝试向编译器添加-lwininet选项,但它什么都不做)

我使用以下软件:

  • 操作系统:Windows 10 x64
  • IDE:Eclipse Neon 3
  • 编译器:MinGW (rubenvb-4.8-stdthread) 4.8.1 20130324 (prerelease)

我看到了以下链接:1 2 3但没有任何帮助我。

感谢您的任何建议。

1 个答案:

答案 0 :(得分:0)

基于g ++编译行,它缺少要链接到的库(wininet)。您需要在eclipse中添加该库,以便程序链接到它。