Question

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

/tmp/cc619KAL.o：在函数main': example00.cpp:(.text+0x26): undefined reference to中curlpp :: Cleanup :: Cleanup（）' example00.cpp :(。text + 0x32）：未定义引用curlpp::Easy::Easy()' example00.cpp:(.text+0x93): undefined reference to curlpp :: Easy :: perform（）' example00.cpp :(。text + 0x9f）：未定义引用curlpp::Easy::~Easy()' example00.cpp:(.text+0xae): undefined reference to curlpp :: Cleanup :: ~Miniup（）' example00.cpp :(。text + 0xf5）：未定义引用curlpp::Easy::~Easy()' example00.cpp:(.text+0x10c): undefined reference to curlpp :: Cleanup :: ~Miniup（）' /tmp/cc619KAL.o:(.gcc_except_table+0x48）：对curlpp :: RuntimeError'的typeinfo for curlpp::LogicError' /tmp/cc619KAL.o:(.gcc_except_table+0x4c): undefined reference to typeinfo的未定义引用 /tmp/cc619KAL.o：在函数curlpp::Option<std::string>::~Option()': example00.cpp:(.text._ZN6curlpp6OptionISsED2Ev[_ZN6curlpp6OptionISsED5Ev]+0x49): undefined reference to curlpp :: OptionBase :: ~BaseBase（）' example00.cpp :(。text._ZN6curlpp6OptionISsED2Ev [_ZN6curlpp6OptionISsED5Ev] + 0x6f）：未定义引用curlpp::OptionBase::~OptionBase()' /tmp/cc619KAL.o: In function curlpp :: Option :: Option（CURLoption，std :: string const＆amp;）'： example00.cpp :(。text._ZN6curlpp6OptionISsEC2E10CURLoptionRKSs [_ZN6curlpp6OptionISsEC5E10CURLoptionRKSs] + 0x21）：对curlpp::OptionBase::OptionBase(CURLoption)' example00.cpp:(.text._ZN6curlpp6OptionISsEC2E10CURLoptionRKSs[_ZN6curlpp6OptionISsEC5E10CURLoptionRKSs]+0x5c): undefined reference to curlpp :: OptionBase :: ~BaseBase（）'的未定义引用 /tmp/cc619KAL.o:(.rodata._ZTVN6curlpp11OptionTraitISsL10CURLoption10002EEE[_ZTVN6curlpp11OptionTraitISsL10CURLoption10002EEE]+x2020）：未定义引用curlpp::OptionBase::operator<(curlpp::OptionBase const&) const' /tmp/cc619KAL.o:(.rodata._ZTVN6curlpp6OptionISsEE[_ZTVN6curlpp6OptionISsEE]+0x20): undefined reference to curlpp :: OptionBase :: operator＆lt;（curlpp :: OptionBase const＆amp;）const' /tmp/cc619KAL.o:(.rodata._ZTIN6curlpp6OptionISsEE[_ZTIN6curlpp6OptionISsEE]+x10）：对typeinfo for curlpp::OptionBase' /tmp/cc619KAL.o: In function curlpp :: UnsetOption :: ~UnsetOption（）'的未定义引用： example00.cpp :(。text._ZN6curlpp11UnsetOptionD2Ev [_ZN6curlpp11UnsetOptionD5Ev] + 0x1f）：对curlpp::RuntimeError::~RuntimeError()' /tmp/cc619KAL.o: In function curlpp :: Option :: updateMeToOption（curlpp :: OptionBase const＆amp;）'的未定义引用： example00.cpp :(。text._ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE [_ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE] + 0x30）：未定义引用typeinfo for curlpp::OptionBase' example00.cpp:(.text._ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE[_ZN6curlpp6OptionISsE16updateMeToOptionERKNS_10OptionBaseE]+0x5d): undefined reference to curlpp :: UnsetOption :: UnsetOption（char const *）' /tmp/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 to curlpp :: UnsetOption :: UnsetOption（std :: string const＆amp;）'中 /tmp/cc619KAL.o：在函数curlpp::Option<std::string>::getValue() const': example00.cpp:(.text._ZNK6curlpp6OptionISsE8getValueEv[_ZNK6curlpp6OptionISsE8getValueEv]+0x59): undefined reference to curlpp :: UnsetOption :: UnsetOption（std :: string const＆amp;）'中 /tmp/cc619KAL.o：在函数void curlpp::internal::CurlHandle::option<void*>(CURLoption, void*)': example00.cpp:(.text._ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT_[_ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT_]+0x2d): undefined reference to curl_easy_setopt'中 example00.cpp :(。text。 ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT [ ZN6curlpp8internal10CurlHandle6optionIPvEEv10CURLoptionT ] + 0x45）：对curlpp :: RuntimeError'的curlpp::libcurlRuntimeAssert(char const*, CURLcode)' /tmp/cc619KAL.o:(.rodata._ZTIN6curlpp11UnsetOptionE[_ZTIN6curlpp11UnsetOptionE]+0x10): undefined reference to typeinfo的未定义引用 collect2：错误：ld返回1退出状态

Answer 1

TheWatcher_，您需要同时链接curlpp和curl（将-lcurlpp和-lcurl添加到链接器行）。有关更完整的分步说明，您需要执行以下操作。

从github克隆最新的curlpp。

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

进入git目录并准备编译
```
cd curlpp
./autogen.sh
./configure
```
现在，让我们编译库以及所有示例
```
make
```

摘要：构建库后，cd进入示例目录并运行以下任一示例（从make中取出）（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

你如何从cURLpp github repo编译example00？

1 个答案: