编译时错误：未定义对 CryptoPP::StringStore::TransferTo2 的引用

问题描述

我正在尝试运行示例程序以使用 C++ 中的 Cryptopp 库创建 SHA-1 哈希。我已经在我的系统上安装了这些软件包（运行 Ubuntu 20.04）：

sudo apt-get install libcrypto++-dev libcrypto++-doc libcrypto++-utils

这是我尝试运行的示例程序的代码：

// test.cpp
#include "cryptopp/cryptlib.h"
#include "cryptopp/sha.h"
#include "cryptopp/files.h"
#include "cryptopp/hex.h"
#include <iostream>

int main(int argc,char *argv[])
{
    using namespace CryptoPP;

    HexEncoder encoder(new FileSink(std::cout));

    std::string msg = "Yoda said,Do or do not. There is no try.";
    std::string digest;

    SHA1 hash;
    hash.Update((const byte *)msg.data(),msg.size());
    digest.resize(hash.DigestSize());
    hash.Final((byte *)&digest[0]);

    std::cout << "Message: " << msg << std::endl;

    std::cout << "Digest: ";
    StringSource(digest,true,new Redirector(encoder));
    std::cout << std::endl;

    return 0;
}

使用给定命令编译程序后，出现以下错误：


elon@starlink:~/$ g++ -o test test.cpp -lcryptopp -lpthread

/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP12StringSourceE[_ZTVN8CryptoPP12StringSourceE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP12StringSourceE[_ZTVN8CryptoPP12StringSourceE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,unsigned long&,std::__cxx11::basic_string<char,std::char_traits<char>,std::allocator<char> > const&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP12StringSourceE[_ZTVN8CryptoPP12StringSourceE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,unsigned long,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE[_ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE[_ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE[_ZTVN8CryptoPP14SourceTemplateINS_11StringStoreEEE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14InputRejectingINS_6FilterEEE[_ZTVN8CryptoPP14InputRejectingINS_6FilterEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14InputRejectingINS_6FilterEEE[_ZTVN8CryptoPP14InputRejectingINS_6FilterEEE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14InputRejectingINS_6FilterEEE[_ZTVN8CryptoPP14InputRejectingINS_6FilterEEE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP17SimpleProxyFilterE[_ZTVN8CryptoPP17SimpleProxyFilterE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP17SimpleProxyFilterE[_ZTVN8CryptoPP17SimpleProxyFilterE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP17SimpleProxyFilterE[_ZTVN8CryptoPP17SimpleProxyFilterE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP23CustomSignalPropagationINS_4SinkEEE[_ZTVN8CryptoPP23CustomSignalPropagationINS_4SinkEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP22CustomFlushPropagationINS_4SinkEEE[_ZTVN8CryptoPP22CustomFlushPropagationINS_4SinkEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP11UnflushableINS_6FilterEEE[_ZTVN8CryptoPP11UnflushableINS_6FilterEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP11UnflushableINS_6FilterEEE[_ZTVN8CryptoPP11UnflushableINS_6FilterEEE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP11UnflushableINS_6FilterEEE[_ZTVN8CryptoPP11UnflushableINS_6FilterEEE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP10BufferlessINS_6FilterEEE[_ZTVN8CryptoPP10BufferlessINS_6FilterEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP10BufferlessINS_6FilterEEE[_ZTVN8CryptoPP10BufferlessINS_6FilterEEE]+0x128): undefined reference to `CryptoPP::Filter::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP10BufferlessINS_6FilterEEE[_ZTVN8CryptoPP10BufferlessINS_6FilterEEE]+0x130): undefined reference to `CryptoPP::Filter::copyRangeto2(CryptoPP::BufferedTransformation&,bool) const'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP4SinkE[_ZTVN8CryptoPP4SinkE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP13AutoSignalingINS_14InputRejectingINS_22BufferedTransformationEEEEE[_ZTVN8CryptoPP13AutoSignalingINS_14InputRejectingINS_22BufferedTransformationEEEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o:(.data.rel.ro._ZTVN8CryptoPP14InputRejectingINS_22BufferedTransformationEEE[_ZTVN8CryptoPP14InputRejectingINS_22BufferedTransformationEEE]+0xd8): undefined reference to `CryptoPP::BufferedTransformation::Skip(unsigned long)'
/usr/bin/ld: /tmp/ccZ6zru9.o: in function `CryptoPP::SourceTemplate<CryptoPP::StringStore>::Pump2(unsigned long&,bool)':
test.cpp:(.text._ZN8CryptoPP14SourceTemplateINS_11StringStoreEE5Pump2ERmb[_ZN8CryptoPP14SourceTemplateINS_11StringStoreEE5Pump2ERmb]+0x5b): undefined reference to `CryptoPP::StringStore::TransferTo2(CryptoPP::BufferedTransformation&,bool)'
collect2: error: ld returned 1 exit status

加密++版本：

elon@starlink:~/$ grep Library cryptopp/cryptlib.h 
/*!     \mainpage Crypto++ Library 8.5 API Reference
/// \details LibraryVersion can help detect inadvertent mixing and matching of library
. . .

g++ 版本：

elon@starlink:~/$ gcc --version
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
copyright (C) 2019 Free Software Foundation,Inc.

有谁知道为什么程序编译失败？

解决方法

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c++crypto++gcc gcc