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我安装了 cURLpp，我正在尝试从他们的 GitHub 存储库编译 example00.cpp。但是，当我运行时，g++ example00.cpp -o example00我得到这个输出：

/tmp/cc619KAL.o：在函数main': example00.cpp:(.text+0x26): undefined reference tocurlpp::Cleanup::Cleanup()'example00.cpp:(.text+0x32) 中：未定义对curlpp::Easy::Easy()' example00.cpp:(.text+0x93): undefined reference tocurlpp::Easy::perform()'example00.cpp:(.text 的引用+0x9f)：对curlpp::Easy::~Easy()' example00.cpp:(.text+0xae): undefined reference tocurlpp::Cleanup::~Cleanup()' 的未定义引用 example00.cpp:(.text+ curlpp::Easy::~Easy()' example00.cpp:(.text+0x10c): undefined reference to0xf5)：对 curlpp::Cleanup::~Cleanup()'/tmp/cc619KAL.o 的未定义引用： (.gcc_except_table+0x48): 未定义对typeinfo for curlpp::LogicError' /tmp/cc619KAL.o:(.gcc_except_table+0x4c): undefined reference tocurlpp::RuntimeError' /tmp/cc619KAL.o 的 typeinfo 的引用：在函数curlpp::Option<std::string>::~Option()': example00.cpp:(.text._ZN6curlpp6OptionISsED2Ev[_ZN6curlpp6OptionISsED5Ev]+0x49): undefined reference tocurlpp::OptionBase::~OptionBase()' example00.cpp:(.text._ZN6curlpp6OptionISsED2Ev[_ZN6curlpp6OptionISsED5Ev]+ 0x6f): 未定义的引用curlpp::OptionBase::~OptionBase()' /tmp/cc619KAL.o: In functioncurlpp::Option::Option(CURLoption, std::string const&)': example00.cpp:(.text._ZN6curlpp6OptionISsEC2E10CURLoptionRKSs[_ZN6curlpp6OptionISsEC5E10CURLoptionRKSs]+0x21): 未定义对curlpp::OptionBase::OptionBase(CURLoption)' example00.cpp:(.text._ZN6curlpp6OptionISsEC2E10CURLoptionRKSs[_ZN6curlpp6OptionISsEC5E10CURLoptionRKSs]+0x5c): undefined reference tocurlpp::OptionBase::~OptionBase()' /tmp 的引用/cc619KAL.o:(.rodata._ZTVN6curlpp11OptionTraitISsL10CURLoption10002EEE[_ZTVN6curlpp11OptionTraitISsL10CURLoption10002EEE]+0x20): 未定义对curlpp::OptionBase::operator<(curlpp::OptionBase const&) const' /tmp/cc619KAL.o:(.rodata._ZTVN6curlpp6OptionISsEE[_ZTVN6curlpp6OptionISsEE]+0x20): undefined reference tocurlpp::OptionBase::operator<(curlpp::OptionBase const&) 的引用<(curlpp::OptionBase const&) const' /tmp/cc619KAL6curlpp:(. _ZTIN6curlpp6OptionISsEE]+0x10)：未定义的typeinfo for curlpp::OptionBase' /tmp/cc619KAL.o: In functioncurlpp::UnsetOption::~UnsetOption()' 引用：example00.cpp:(.text._ZN6curlpp11UnsetOptionD2Ev[_ZN6curlpp11UnsetOptionD5Ev]+0x1f)：未定义的引用curlpp::RuntimeError::~RuntimeError()' /tmp/cc619KAL.o: In functioncurlpp::Option::updateMeToOption(curlpp::OptionBase const&)': example00.cpp:(.text._ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE[_ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE]+0x30): 未定义对typeinfo for curlpp::OptionBase' example00.cpp:(.text._ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE[_ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE]+0x5d): undefined reference tocurlpp::UnsetOption::UnsetOption(char const*)' /tmp 的引用/cc619KAL.o: 在函数curlpp::OptionTrait<std::string, (CURLoption)10002>::updateHandleToMe(curlpp::internal::CurlHandle*) const': example00.cpp:(.text._ZNK6curlpp11OptionTraitISsL10CURLoption10002EE16updateHandleToMeEPNS_8internal10CurlHandleE[_ZNK6curlpp11OptionTraitISsL10CURLoption10002EE16updateHandleToMeEPNS_8internal10CurlHandleE]+0x59): undefined reference tocurlpp::UnsetOption::UnsetOption(std::string const&)' /tmp/cc619KAL.o: 在函数curlpp::Option<std::string>::getValue() const': example00.cpp:(.text._ZNK6curlpp6OptionISsE8getValueEv[_ZNK6curlpp6OptionISsE8getValueEv]+0x59): undefined reference tocurlpp::UnsetOption::UnsetOption(std::string const&)' /tmp/cc619KAL .o: 在函数void curlpp::internal::CurlHandle::option<void*>(CURLoption, void*)': example00.cpp:(.text._ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT_[_ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT_]+0x2d): undefined reference tocurl_easy_setopt'example00.cpp:(. text.ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT [ ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT ]+0x45): 未定义的引用curlpp::libcurlRuntimeAssert(char const*, CURLcode)' /tmp/cc619KAL.o:(.rodata._ZTIN6curlpp11UnsetOptionE[_ZTIN6curlpp11UnsetOptionE]+0x10): undefined reference tocurlpp::RuntimeError' collect2 的 typeinfo：错误：ld 返回 1 个退出状态

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1 回答 1

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TheWatcher_，您需要在 curlpp 和 curl 中进行链接（添加-lcurlpp到-lcurl您的链接器行）。要获得更完整的分步操作，您需要执行以下操作。

  1. 从 github 克隆最新的 curlpp。

    git clone https://github.com/jpbarrette/curlpp.git

  2. 进入git目录，准备编译

    cd curlpp
./autogen.sh
./configure

  3. 现在，让我们编译库以及所有示例

    make

总结：一旦构建了库，cd 进入示例目录并为任何示例运行以下命令（从 make 中提取）（将 00 替换为所需的示例编号）：

cd examples
g++ -DHAVE_CONFIG_H -I. -I../include/curlpp  -I../include   -g  -W -Wall -Werror    -I/usr/local/include -MT example00.o -MD -MP -MF .deps/example00.Tpo -c -o example00.o example00.cpp
mv -f .deps/example00.Tpo .deps/example00.Po
/bin/sh ../libtool --silent  --tag=CXX   --mode=link g++  -g  -W -Wall -Werror -I/usr/local/include -L../src/curlpp/ -lcurlpp -static -o example00 example00.o -lstdc++ -lcurl
于 2016-06-27T20:26:25.627 回答