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我在我的 cygwin 环境中设置了 x86_64-pc-cygwin-gcc 包以获取最近的 gcc

$ x86_64-pc-cygwin-gcc --version
x86_64-pc-cygwin-gcc (GCC) 4.8.1

我有一个小代码文件，你可以在这里找到它 来构建我使用以下行：

 x86_64-pc-cygwin-gcc -std=c++11 -std=gnu++11 TreasureHunter.cpp

编译没问题，但我收到几个关于 std::istream 的链接错误，见下文。这是什么问题，这是否意味着我在安装过程中错过了一个包裹？

/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x60): undefined reference to `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x60): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x7c): undefined reference to `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x7c): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0xc2): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char> >(std::basic_istream<char, std::char_traits<char> >&, char&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0xc2): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char> >(std::basic_istream<char, std::char_traits<char> >&, char&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x11e): undefined reference to `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x11e): relocation
truncated to fit: R_X86_64_PC32 against undefined symbol `std::istream::operator>>(int&)'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x2d2): undefined reference to `std::ios_base::Init::Init()'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x2d2): relocation
truncated to fit: R_X86_64_PC32 against undefined symbol `std::ios_base::Init::Init()'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x2ed): undefined reference to `std::ios_base::Init::~Init()'
/cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o:TreasureHunter.cpp:(.text+0x2ed): relocation
truncated to fit: R_X86_64_PC32 against undefined symbol `std::ios_base::Init::~Init()'
/usr/lib/gcc/x86_64-pc-cygwin/4.8.1/../../../../x86_64-pc-cygwin/bin/ld: /cygdrive/c/Users/abuisson/AppData/Local/Temp/cc9qeGVh.o: bad reloc address 0x0 in section `.pdata$_ZSt4__lgl'
/usr/lib/gcc/x86_64-pc-cygwin/4.8.1/../../../../x86_64-pc-cygwin/bin/ld: final link failed: Invalid operation
collect2: error: ld returned 1 exit status
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1 回答 1

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由于您使用gcc而不是编译 C++ 代码，因此g++您至少需要添加-lstdc++到命令行。最好只g++在第一时间使用。

于 2013-11-06T15:39:50.307 回答